Outcomes in diabetic macular edema switched directly or after a dexamethasone implant to a fluocinolone acetonide intravitreal implant following anti-VEGF treatment

What have we learned from a decade treating patients with diabetic macular oedema with 0.19 mg fluocinolone acetonide intravitreal implant?

Diabetic macular oedema [DMO] is a prevalent and sight-threatening condition among diabetic patients, which can cause irreversible blindness. Since angiogenesis and inflammation are two key elements in the etiopathogenesis of DMO, intravitreal injections of vascular endothelial growth factor inhibitors [anti-VEGF] and sustained released intravitreal corticosteroid implants are currently considered as treatments of choice. The introduction, 10 years ago, of the 0.19 mg fluocinolone acetonide [FAc] implant for treating eyes with vision impairment associated with recurrent and persistent DMO represented an important advance. Since then, two randomized-control trials and many real-world studies have shown its good efficacy/safety profile and the replicability of its treatment regimen. The FAc implant is, in general terms well tolerated, although it is associated with intraocular pressure-[IOP] and cataract-related adverse events [AEs]. Most IOP-related AEs are effectively controlled with ocular-hypotensive therapies. The objective of this paper is to review the role of FAc implant in the treatment of DMO over the 10 years since its launch, as well as its impact on clinical practice outcomes.

Stabilizing Macular Edema Fluctuations: Outcomes of Intravitreal Fluocinolone Acetonide for Diabetic Macular Edema and Non-Infectious Uveitis

Background/Objectives: Chronic macular edema (CME) is a common complication of diabetic retinopathy or non-infectious uveitis affecting the posterior segment (NIU-PS). Alongside anti-VEGF therapy, glucocorticoids are frequently used to manage CME. Given the heterogeneous nature of patients' medical history, their social conditions, and disease manifestations, individualized treatment is essential for optimal outcomes. This study assesses the effectiveness of intravitreal fluocinolone acetonide (FA) (Iluvien®) in treating persistent and recurrent macular edema in clinical practice at the University Hospital of Erlangen-Nuremberg, Germany. Methods: A total of 46 eyes with diabetic macular edema (DME) (21 eyes) and NIU-PS (25 eyes) were retrospectively analyzed over a follow-up period of up to 36 months. Since persistent retinal thickness fluctuations are linked to long-term retinal damage and functional decline, this study analyzed central retinal thickness (CRT)-including its fluctuations measured as CRT amplitude-alongside BCVA as the primary outcomes. Results: After an initial decrease in CRT in the first year after FA treatment, the maximum CRT amplitude significantly decreased in the following years. For patients with DME, CRT amplitude reduced from 271.4 µm to 91.57 µm in the first year (p = 0.0056) and 106.0 µm in the second year (p = 0.0109). For patients with NIU-PS, CRT amplitude decreased from 185.2 µm to 87.7 µm in the first year (p = 0.0131) and 97.3 µm in the second year (p = 0.0375). Mean BCVA remained stable in both cohorts. Conclusions: Intravitreal FA proved to be effective in reducing and stabilizing CRT in patients with chronic DME and NIU-PS without losing visual acuity, reducing treatment burden.

The role of metal nanocarriers, liposomes and chitosan-based nanoparticles in diabetic retinopathy treatment: A review study

Diabetic Retinopathy (DR) is a significant and progressive eye complication associated with diabetes mellitus, leading to potential vision loss. The pathophysiology of DR involves complex neurovascular changes due to prolonged hyperglycemia, resulting in microangiopathy and neurodegeneration. Current treatment modalities come with limitations such as low bioavailability of therapeutic agents, risk of side effects, and surgical complications. Consequently, the prevention and management of DR, particularly in its advanced stages, present ongoing challenges. This review investigates recent advancements in nanotechnology as a novel approach to enhance the treatment of DR. A comprehensive literature review of recent studies focusing on nanocarriers for drug delivery in DR treatment and an analysis of their efficacy compared to traditional methods was conducted for this study. The findings indicate that nanotechnology can significantly enhance the bioavailability of therapeutic agents while minimizing systemic exposure and associated side effects. The novelty of this study lies in its focus on the intersection of nanotechnology and ophthalmology, exploring innovative solutions that extend beyond existing literature on DR treatments. By highlighting recent advancements in this field, the study paves the way for future research aimed at developing more effective therapeutic strategies for managing DR.

Fluocinolone acetonide implant (FAci) one month after dexamethasone implant (DEXi) for chronic diabetic macular edema: 1-year results

PURPOSE

To evaluate the safety and efficacy of FACi injected 1month after the last DEXi injection in pseudophakic patients without ocular hypertension who required frequent DEXi injections (<6months).

PATIENTS AND METHODS

This was a prospective study including pseudophakic patients with chronic diabetic macular edema (DME) previously treated with DEXi without secondary ocular hypertension. All patients received DEXi followed by FAci one month later. Visits were scheduled at baseline, M1, then every 3months up to 12months.

RESULTS

Fourteen eyes of 11 patients were included and were followed until the 12-month time point. Visual gain was significant at M6 (+5.6 letters) and at M9 (+7.1 letters). A reduction in central macular thickness was obtained at 1 month (-86μm), remaining stable over subsequent visits. The rate of ocular hypertension requiring pressure lowering treatment was 14%. Three eyes needed additional treatment (21%); one eye was treated with aflibercept, and 2 eyes with DEXi at M5 and M11. No patient underwant additional FAc implantation during the 11 months of follow-up.

CONCLUSION

Injection of FAci one month after DEXi in pseudophakic patients with chronic DME who responded previously to DEXi results in anatomical improvement and deferred visual gain. This prospective study demonstrates the efficacy and safety of both implants in DME patients who have been previously treated with other therapies.

Real-World Evidence of the Long-Term Effectiveness of 0.2 μg/Day Fluocinolone Acetonide Implant in Persistent and Recurrent Diabetic Macular Edema - A Single Center Study

Purpose

To report the long-term functional, anatomical and safety outcomes of 0.2 μg/day fluocinolone acetonide 0.19mg in patients with persistent or recurrent diabetic macular edema (DME).

Methods

Retrospective, observational, single-center study of patients with recurrent or persistent DME. All patients received 0.2 μg/day of fluocinolone acetonide 0.19mg, and data were collected at baseline and months 1, 3, 6, 12, 24 and 36 after implantation. Outcomes measured included best-corrected visual acuity (BCVA), central macular thickness (CMT), intraocular pressure (IOP), and safety outcomes.

Results

A total of 28 eyes from 28 patients were included. The mean age was 66.5 years (95% CI 62.8-70.2) with a mean duration of DME of 8.8 years (95% CI 7.7-10.0). Only two eyes were phakic. Mean follow-up was 25.4 months (95% CI 21.2-29.6). Mean BCVA at baseline was 48.6 ETDRS letters (95% CI 41.3-55.8) and improved as early as month 1 of follow-up with a mean gain in BCVA of 7.8 (95% CI 4.3-11.3) ETDRS letters (p<0.001). Statistically significant improvements in BCVA were also observed at months 6, 12 and 24. At baseline, patients had a mean CMT of 530.5µm (95% CI 463.0-598.0), and a decrease in CMT was observed, starting at the first month of follow-up (mean CMT reduction of -170.5µm, 95% CI -223.8- -117.1; p<0.001). Statistically significant decreases in CMT were also observed at months 6, 12, 24, and 36, with the maximum decrease observed at month 12 (p<0.001). Mean IOP at baseline was 16.4mmHg (95% CI 15.3-17.5) and nine eyes (32.1%) had an IOP ≥21mmHg during follow-up.

Conclusion

Our results support the effectiveness and safety profile of fluocinolone acetonide. Although additional long-term real-world evidence is required, fluocinolone acetonide may represent a safe strategy for daily, low-dose, sustained and localized release to the posterior segment of the eye, providing both functional and anatomical benefits in DME.

The Treatment of Diabetic Retinal Edema with Intravitreal Steroids: How and When

Diabetic macular edema (DME) is a common complication of diabetes mellitus and a leading cause of visual impairment worldwide. It is defined as the diabetes-related accumulation of fluid, proteins, and lipids, with retinal thickening, within the macular area. DME affects a significant proportion of individuals with diabetes, with the prevalence increasing with disease duration and severity. It is estimated that approximately 25-30% of diabetic patients will develop DME during their lifetime. Poor glycemic control, hypertension, hyperlipidemia, diabetes duration, and genetic predisposition are recognized as risk factors for the development and progression of DME. Although the exact pathophysiology is still not completely understood, it has been demonstrated that chronic hyperglycemia triggers a cascade of biochemical processes, including increased oxidative stress, inflammation, activation of vascular endothelial growth factor (VEGF), cellular dysfunction, and apoptosis, with breakdown of the blood-retinal barriers and fluid accumulation within the macular area. Early diagnosis and appropriate management of DME are crucial for improving visual outcomes. Although the control of systemic risk factors still remains the most important strategy in DME treatment, intravitreal pharmacotherapy with anti-VEGF molecules or steroids is currently considered the first-line approach in DME patients, whereas macular laser photocoagulation and pars plana vitrectomy may be useful in selected cases. Available intravitreal steroids, including triamcinolone acetonide injections and dexamethasone and fluocinolone acetonide implants, exert their therapeutic effect by reducing inflammation, inhibiting VEGF expression, stabilizing the blood-retinal barrier and thus reducing vascular permeability. They have been demonstrated to be effective in reducing macular edema and improving visual outcomes in DME patients but are associated with a high risk of intraocular pressure elevation and cataract development, so their use requires an accurate patient selection. This manuscript aims to provide a comprehensive overview of the pathology, epidemiology, risk factors, physiopathology, clinical features, treatment mechanisms of actions, treatment options, prognosis, and ongoing clinical studies related to the treatment of DME, with particular consideration of intravitreal steroids therapy.

Management of Patients with Diabetic Macular Edema Switched from Dexamethasone Intravitreal Implant to Fluocinolone Acetonide Intravitreal Implant

To assess anatomical and functional outcomes after switching from dexamethasone implant (DEXi) to fluocinolone acetonide implant (FAci) in 113 diabetic macular edema eyes, a multicentric retrospective observational study was conducted. Seventy-five eyes (73.5%) were switched 1−8 weeks after their last DEXi. The mean best-corrected visual acuity improved to 59.8 letters at month 4 and remained stable during the follow-up. The mean central macular thickness (CMT) significantly decreased during the follow-up, with a minimum of 320.9 μm at month 3. The baseline CMT was higher in eyes that received the last DEXi >8 weeks versus <8 weeks before the first FAci (p < 0.021). After FAci injection, additional treatments were needed in 37 (32.7%) eyes. A longer diabetes duration (p = 0.009), a longer time between the last DEXi and the first FAci (p = 0.035), and a high baseline CMT (p = 0.003) were risk factors for additional treatments. The mean intraocular pressure was <19 mmHg at all timepoints, with no difference between eyes receiving the last DEXi ≤8 weeks or >8 weeks before the switch. Switching from DEXi to FAci in DME is effective and safe. A short time between the last DEXi and the first FAci reduced CMT fluctuations and the need for early additional treatments.

Effectiveness and tolerability of the fluocinolone acetonide implant in patients with diabetic macular edema in the UAE: 24 and 36-month outcomes

INTRODUCTION

The effectiveness and safety of the fluocinolone acetonide (FAc) implant was evaluated at Month 24 and, in some sustained for up to 36 months, in patients with diabetic macular edema (DME) and a pseudophakic lens treated in the UAE following prior anti-vascular endothelial growth factor and dexamethasone (DEX) implant.

METHODS

This was a retrospective, observational audit study conducted between September 2017-September 2020 in which 22 patients were treated with the FAc implant and outcomes monitored for up to 36 months. Effectiveness outcomes were: best-corrected visual acuity (BVCA) and central macular thickness (CMT). Safety was assessed by monitoring intraocular pressure (IOP). All outcomes were measured at Months 1, 3, 6, 12, 24, and 36.

RESULTS

Significant improvements in mean BCVA were observed versus baseline from Month 1, which were maintained up to Month 24 (P < 0.0001 versus baseline). In all five patients completing 36 months follow-up, the improvements in BVCA were maintained through to Month 36 P < 0.005 versus baseline. Similarly, mean CMT improved versus baseline at Month 1 through to Month 24 (P < 0.0001 versus baseline), with significant improvements also noted in the 5 patients completing 36 months follow-up (P < 0.005 versus baseline). An IOP rise to 32 mmHg was observed in one eye, but returned to normal values at next measure. Five eyes required IOP lowering drops and one required IOP-lowering surgical intervention.

CONCLUSION

The FAc intravitreal implant is effective for 24 months, and sustained for 36 months, in a UAE population previously treated with a DEX implant, with tolerability profile in-line with previous reports.

Efficacy and Safety of Intravitreal Injection of Triamcinolone Acetonide and Conbercept for Intraocular Lens after Cataract Surgery

Objective

To investigate the effect of intravitreal injection of triamcinolone acetonide and conbercept on the efficacy and safety of diabetic macular edema (DME) after cataract intraocular lens (IOL) surgery.

Methods

A total of 350 patients with cataract complicated with diabetic macular edema in our hospital from January 2017 to July 2021 were randomly divided into conbercept group and triamcinolone acetonide group. Patients in the conbercept group were given intravitreal injection of conbercept during IOL surgery, and patients in the triamcinolone acetonide group were given injection of triamcinolone acetonide during surgery.

Results

Three months after treatment, the best-corrected visual acuity of the two groups was significantly higher than before, the corrected visual acuity of the conbercept group was more significant than the triamcinolone acetonide group, and the intraocular pressure of the triamcinolone acetonide group was higher than the conbercept group. The foveal thickness and macular volume were significantly reduced in both groups, and was reduced more in the conbercept group than in the triamcinolone acetonide group. The contents of VEGF, SDF-1, and IL-6 in both groups were significantly decreased, and the decrease was more significant in the conbercept group than in the triamcinolone acetonide group. The patients with elevated intraocular pressure, headache and vomiting, orbital swelling pain, eye swelling pain, and eye pain in the triamcinolone acetonide group were significantly higher than those in the conbercept group (P < 0.05).

Conclusions

Conbercept and triamcinolone acetonide has a good therapeutic effect on DME in pseudophakic eyes after cataract IOL surgery, which can reduce the degree of macular edema and improve the visual function. However, the therapeutic effect of injection therapy with conbercept is safe, the prognosis is better, and the complication rate is low.

Intraocular Pressure Changes After Intravitreal Fluocinolone Acetonide Implant: Results from Four European Countries

INTRODUCTION

The 0.19 mg fluocinolone acetonide (FAc) intravitreal implant delivers a continuous intravitreal corticosteroid dose for the treatment of refractory diabetic macular oedema (DMO). The aim of this study was to assess the impact of an FAc intravitreal implant on intraocular pressure (IOP).

METHODS

We retrospectively collected anonymised data on the patients' characteristics, DMO treatment, and IOP and IOP-lowering treatments before and after the FAc intravitreal implant between September 2013 and March 2020 in several European centres.

RESULTS

A total of 221 eyes from 179 patients were included. The mean follow-up duration was 13.4 (± 12.5, range 2.4-33.5) months. Overall, 194 eyes (88.2%) had received an intravitreal dexamethasone injection before the FAc intravitreal implant. For 25 eyes (11.3%) there was a history of glaucoma, and 52 eyes (23.5%) had previous IOP-lowering treatment. Mean IOP before injection was 14.7 (3.4) mmHg and increased to 16.9 (3.7) mmHg 12 months after injection (P < 0.0001). During follow-up, 55 eyes (24.9%) required the addition or initiation of topical IOP-lowering medication, only one patient (0.5%) had laser trabeculoplasty and one patient (0.5%) a minimally invasive glaucoma surgery, and no patient required incisional IOP-lowering surgery.

CONCLUSION

The FAc intravitreal implant led to substantial IOP elevation. This elevation was monitored most of the time with addition or initiation of topical IOP-lowering medication.

An update on long-acting therapies in chronic sight-threatening eye diseases of the posterior segment: AMD, DMO, RVO, uveitis and glaucoma

In the real-world setting, there is suboptimal compliance with treatments that require frequent administration and assessment visits. This undertreatment frequently has negative consequences in eye disease and carries a real risk to vision. For example, patients with glaucoma risk progression of visual loss even with a small number of missed doses, and patients with neovascular age-related degeneration (nAMD) who fail to attend a bi-monthly clinic appointment to receive an intravitreal anti-vascular endothelial growth factor (VEGF) drug injections may lose the initial vision gains in vision. Protracted regular treatment schedules represent a high burden not only for patients and families, but also healthcare professionals, systems, and ultimately society too. There has been a clear need for longer-acting therapies that reduce the frequency, and therefore the burden, of treatment interventions. Several longer-acting interventions for nAMD, diabetic macular oedema, retinal vein occlusion, uveitis and glaucoma have either been developed or are in late-phase development, some of which employ novel mechanisms of actions, and all of which of promise longer (≥3 month) treatment intervals. This review delivers an overview of anti-VEGF agents with longer durations of action, DARPins, bispecific anti-VEGF/Ang2 therapies, anti-PDGF and anti-integrin therapy, Rho-kinase inhibitors, the Port Delivery System, steroids, gene therapy for retina and uveitis, and for glaucoma, ROCK inhibitors, implants and plugs, and SLT laser and MIGS. The review also refers to the potential of artificial intelligence to tailor treatment efficacy with a resulting reduction in treatment burden.

Extended real-world experience with the ILUVIEN® (fluocinolone acetonide) implant in the United Kingdom: 3-year results from the Medisoft® audit study

BACKGROUND

This study aimed to assess the long-term effectiveness of the 0.2 μg/day fluocinolone acetonide (FAc) implant over ≥3 years for patients with diabetic macular oedema.

METHODS

A retrospective audit of pseudo-anonymised data from patients with chronic diabetic macular oedema (cDMO) and treated with the FAc implant across 14 UK clinical sites. Safety and clinical effectiveness were measured.

RESULTS

Two-hundred and fifty-six eyes had ≥3 years of follow-up (mean 4.28 years), during which a mean of 1.14 FAc implants were used per eye. Mean best-recorded visual acuity (BRVA) increased from 52.6 to 56.7 letters at month 3 and remained stable thereafter; this trend was also seen in pseudophakic eyes. The proportion of patients attaining a BRVA ≥6/12 increased from 17% at baseline to 27% 1 month after FAc implant and remained stable above 30% from month 12 onwards. Eyes with no prior history of intraocular pressure (IOP)-related events required significantly less treatment-emergent IOP-lowering medication than those with a prior history of IOP events (17.9% vs. 50.0% of eyes; p < 0.001). The incidence of an IOP increase of ≥10 mmHg, use of IOP-lowering medication, laser trabeculoplasty and IOP-lowering surgery was 28.9%, 29.7%, 0.8% and 2.7%, respectively, for the whole cohort. There were significant reductions in mean central foveal thickness and macular volume (p < 0.001).

CONCLUSIONS

The FAc implant was well tolerated, with predictable and manageable IOP-related events while delivering a continuous microdose of corticosteroid to eyes with cDMO, providing prolonged vision preservation and a reduced number of treatments.

Efficacy and Safety of Intravitreal Fluocinolone Acetonide Implant for Chronic Diabetic Macular Edema Previously Treated in Real-Life Practice: The REALFAc Study

Diabetic macular edema (DME) is the main cause of visual impairment in diabetic patients and a chronic disease requiring long-term treatments. The fluocinolone acetonide (FAc) implant has recently been approved to treat DME in patients considered insufficiently responsive to available therapies. This study evaluates the functional and anatomical efficacy of the FAc implant in real-life practice. A total of 62 eyes with chronic DME were included and followed for a mean of 13.9 (+7.5) months. Previous treatment included at least anti-vascular endothelial growth factor (VEGF) in 83.9% of eyes, dexamethasone implant (DEX-I) in 100% of eyes, vitrectomy in 29.0% of eyes, and laser photocoagulation (either panretinal or focal photocoagulation) in 75.8% of eyes. The mean baseline best corrected visual acuity (BCVA) was 64.0 (+/−17.2) letters (median: 67.5 letters) with a mean DME duration of 60.3 (+/−30.6) months. The maximum BCVA gain occurred at 21 months with a mean gain of 5.0 (+/−12.7) letters. A total of 50.0% of eyes gained ≥5 letters during follow-up. Patients with lower BCVA at baseline had the lowest final BCVA (p < 0.001) but the highest BCVA gain (p = 0.02). The best overall improvement in mean central macular thickness (CMT) occurred at 18 months (p < 0.0001). The improvement in BCVA was inversely associated with the decrease in CMT and showed a decrease when CMT increased (DME recurrence). According to the history of vitrectomy, we did not find any significant difference in mean final BCVA (p = 0.1) and mean BCVA gain (p = 0.2) between eyes previously vitrectomized or not. A total of 23 eyes (37.1%) required additional treatment for DME, and 17.7% required an IOP-lowering procedure during follow-up. In conclusion, this real-life observational study demonstrated the efficacy and safety of the FAc implant in patients with chronic DME already treated with other available therapies.

Fluocinolone acetonide implant in diabetic macular edema: International experts' panel consensus guidelines and treatment algorithm

Center-involving diabetic macular edema (DME) is a leading cause of vision impairment in working-age adults. While its management is particularly challenging in a poorly compliant population, continuous innovation and the advent of new molecules have improved its outcome. The control of glycemia and of systemic aggravating factors remain essential to slow down progression of disease complications including DME. The indications for macular laser photocoagulation has progressively been phased out as a standard of care and replaced by local intraocular anti-VEGFs biologics and glucocorticoids (GCs). Intravitreal GCs in controlled-release drug delivery systems have allowed to reduce injection frequency and treatment burden. The non biodegradable Fluocinolone Acetonide (FAc) implant allows a long-lasting stabilization of both functional and anatomic improvements. However, adequate patient selection and monitoring through regular follow-up are essential for optimal results. Based on their experience and the latest literature, the aim of the present review is to provide international expert panel consensus on the place of the FAc implant in the treatment algorithm of DME, as well as its safety profile and how to manage it.

Prognostic biomarkers of chronic diabetic macular edema treated with a fiuocinolone acetonide intravitreal implant

Background

This study aimed to investigate retinal imaging biomarkers, such as disorganization of the retinal inner layers (DRIL) and/or ellipsoid zone (EZ) disruption by spectral domain optical coherence tomography (SD-OCT), and functional outcomes in eyes treated with 0.2 µg/day of a fluocinolone acetonide intravitreal implant (FAc) after an insufficient response to previous treatments.

Methods

This was a retrospective comparative study of 18 eyes (15 patients) with persistent and/or recurrent diabetic macular edema (DME) treated with FAc. Eyes were divided according to the number of prior intravitreal treatments: group 1 (n = 8) with ≤ 6 injections (early switch) and group 2 (n = 10) with > 6 injections (late switch). Outcomes included percentage of eyes with DRIL and/or EZ disruption at baseline and analysis of the best corrected visual acuity (BCVA) using ETDRS letters, central macular thickness (CMT), DRIL, and EZ disruption at the last observation.

Results

Group 2 revealed a significantly higher percentage of DRIL and/or EZ disruption than group 1 (P < 0.05). At the last observation, group 1 revealed a higher percentage of eyes achieving vision stability/ improvement, gaining ≥ 15 letters, and achieving ≥70 letters (P > 0.05 for all comparisons). The mean BCVA gain was 8.8 and 0.7 letters for groups 1 and 2 (P = 0.397). Both groups revealed a significant mean CMT reduction (> 20% reduction from the baseline value), without a significant statistical difference between them (P = 0.749). After treatment, most eyes from both groups showed resolution of DRIL and EZ disruption.

Conclusions

Patients with DME presenting with a lower percentage of DRIL and/or EZ disruption at baseline had better functional outcomes, supporting the possible benefit of an early switch to FAc after insufficient response to previous treatments. Future randomized studies with a larger patient cohort are warranted to confirm our conclusions.

Fluocinolone acetonide vitreous insert for chronic diabetic macular oedema: a systematic review with meta-analysis of real-world experience

We conducted a meta-analysis of real-world studies on the 0.19 mg Fluocinolone Acetonide (FAc) intravitreal implant for chronic diabetic macular oedema (DMO), comparing these findings with the Fluocinolone Acetonide for Diabetic Macular Edema (FAME) study. The primary outcome was mean change of best corrected visual acuity (BCVA) at 24 months. Secondary outcomes were 36-month mean BCVA, mean central macular thickness (CMT) change, rates of eyes receiving supplementary intravitreal therapy, cataract surgery, intraocular pressure (IOP)-lowering drops and glaucoma surgery. Mean differences (MDs) with 95% confidence intervals (CIs) were calculated. Nine real-world studies were included. The FAc implant yielded a significantly improved BCVA at 24 and 36 months (24-month MD = 4.52; 95% CI 2.56–6.48; 36-month MD = 8.10; 95% CI 6.34–9.86). These findings were comparable with the FAME study. The FAc implant yielded significantly reduced 24- and 36-month CMT. Pooled proportions of cataract surgery, IOP-lowering drops and glaucoma surgery were 39%, 27% and 3%, respectively, all lower than the FAME study. Pooled estimate of supplementary intravitreal therapy was 39%, higher than the 15.2% of the FAME study. This meta-analysis of real-world studies confirms favorable visual and anatomical outcomes following FAc insert for chronic DMO. In real-life studies more than one third of patients received supplementary intravitreal therapy, an issue that needs to be further explored.

The outcome of fluocinolone acetonide intravitreal implant is predicted by the response to dexamethasone implant in diabetic macular oedema

BACKGROUND/OBJECTIVES

To investigate if the visual and anatomic response to the first dexamethasone implant (DEX) predicts the 12-month clinical outcome after shifting to fluocinolone acetonide (FAc) implant in patients with diabetic macular oedema (DMO).

METHODS

Retrospective cohort study including pseudophakic patients with previously treated DMO, undergone one or more DEX injections before FAc. Functional and morphologic response to DEX was defined based on the best-corrected visual acuity (BCVA) and central macular thickness (CMT) changes after the first DEX, respectively. Steroid-response was defined as intraocular pressure (IOP) elevation ≥5 mmHg or IOP > 21 mmHg after any previous DEX exposure. Pairwise comparisons for BCVA, CMT, and IOP after FAc were performed with linear mixed models and a repeated-measure design.

RESULTS

Forty-four eyes of 33 patients were included. Patients were shifted to FAc after a mean ± standard deviation of 4.6 ± 3.2 DEX injections. Overall, BCVA and CMT improved during the first 12 months after switching to FAc (p = 0.04 and p < 0.001, respectively). Only eyes with a good morphologic response to DEX had a significant CMT reduction after FAc (p < 0.001), while no significant relationship was found between BCVA improvement after DEX and after FAc. IOP elevation occurred in 9 eyes (20%) following DEX implant. These eyes carried a 20-fold increased risk of having an IOP rise after FAc (p < 0.001), with a non-linear relationship between the IOP increase after DEX and the one after FAc.

CONCLUSION

The response to previous DEX may anticipate the morphologic response to subsequent FAc. Eyes with steroid-induced IOP elevation after DEX are at a high risk of IOP increase after FAc. The visual response after FAc was not associated with the visual response to previous steroids, indicating that FAc may have a role also in patients refractory to DEX implant.

Effectiveness and tolerability of the fluocinolone acetonide implant in patients with diabetic macular edema in UAE: 12-Month results

INTRODUCTION

To evaluate 12-month outcomes following fluocinolone acetonide (FAc 0.2 μg/day) implant in pseudophakic patients with diabetic macular edema (DME) that persists or recurs despite previous treatment with anti-vascular endothelial growth factors (anti-VEGF) and dexamethasone implant (DEX) in a UAE population.

METHODS

A retrospective, observational, single-center, 12-month audit study, where 22 pseudophakic eyes (22 patients) with DME were treated with the FAc intravitreal implant according to licensed UAE indications. Outcome measurements at baseline and at months 1, 3, 6, and 12 included best-corrected visual acuity (BCVA), central macular thickness (CMT), and intraocular pressure (IOP).

RESULTS

Post-FAc implantation, mean BCVA significantly improved at 1, 3, and 12 months (+10.4 ± 16.1, +22.8 ± 13.6, and +25.5 ± 13.0 letters, respectively; p < 0.0001), with 86% of eyes gaining ⩾15 letters at month 12. Similarly, CMT reduced significantly at month 1, and stabilized thereafter at months 3-12 (-171.5 ± 72.5 µm, -240.9 ± 74.2 µm, and -246.2 ± 93.4 µm, respectively; p < 0.0001). By month 12, 64% (n = 14/22) of eyes had a CMT below 300 µm. Only 1 eye had an IOP ⩾ 21 mmHg at baseline and month 12. Five eyes required IOP lowering drops and 1 required IOP-lowering surgical intervention.

CONCLUSION

In pseudophakic patients with DME FAc implant provide a substantial functional and anatomical benefits for up to 12 months.

Real-World Efficacy and Safety of Fluocinolone Acetonide Implant for Diabetic Macular Edema: A Systematic Review

To assess real-world outcomes of fluocinolone acetonide (FAc) implant in treating diabetic macular edema (DME), a systematic literature review was conducted on PubMed in order to identify publications assessing the efficacy and safety of the FAc implant in DME in daily practice. Case reports and randomized controlled trials were excluded. Twenty-two observational real-world studies analyzing a total of 1880 eyes were included. Mean peak visual gain was +8.7 letters (11.3 months post-FAc injection) and was greater for lower baseline best corrected visual acuity (BCVA) and for more recent DME. Mean central retinal thickness (CRT) decreased 34.3% from baseline. 77.0% of the analyzed studies reported both BCVA improvement of at least five letters and a CRT decrease by 20% or more. Rescue therapy was needed more frequently when FAc was administered for chronic DME. FAc-induced ocular hypertension was reported in 20.1% of patients but only 0.6% needed surgery. Cataract extraction was performed in 43.2% of phakic patients. Adequate patient selection is essential for optimal FAc response and better safety profile. Currently positioned as second- or third-line treatment in the management algorithm, FAc implant decreases treatment burden and provides better letter gain when administered for more recent DME.

Clinical-Decision Criteria to Identify Recurrent Diabetic Macular Edema Patients Suitable for Fluocinolone Acetonide Implant Therapy (ILUVIEN®) and Follow-Up Considerations/Recommendations

Current management of diabetic macular edema (DME) predominantly involves treatment with short-acting intravitreal injections of anti-vascular endothelial growth factors (anti-VEGFs) and/or corticosteroids; however, short-acting therapies (lasting between 1 and 6 months) require frequent injections to maintain efficacy, meaning a considerable treatment burden for diabetic patients with multiple comorbidities. Continuous injections needed in some cases are an economic burden for patients/healthcare system, so real-life clinical practice tends to adopt a reactive approach, ie, watch and wait for worsening symptoms, which consequently increases the risk of undertreatment and edema recurrence. On March 7th 2019, a group of experts in retinal medicine and surgery held a roundtable meeting in Madrid, Spain to discuss how to (1) optimize clinical outcomes through earlier use of fluocinolone acetonide (FAc) implant (ILUVIEN^®) in patients with persistent or recurrent DME despite therapy; and, (2) to provide guidance to assist physicians in deciding which patients should be treated with ILUVIEN. In this regard, a 36-month follow-up consensus protocol is presented. In conclusion, patients that achieve a complete or partial anatomical, and preferably functional, response following one or two intravitreal dexamethasone implants, but with recurrence of edema after 3-4 months, are deemed by the authors most likely to benefit from ILUVIEN, and the switch to FAc implant should not be delayed more than 12 months after the initiation of at least the first dexamethasone implant.

Persistent or Recurrent Diabetic Macular Edema After Fluocinolone Acetonide 0.19 mg Implant: Risk Factors and Management

PURPOSE

To investigate baseline characteristics of patients undergoing additional antivascular endothelial growth factor (VEGF) injections for residual or recurrent diabetic macular edema (DME) in the first year after 0.19-mg fluocinolone acetonide (FAc) implant.

DESIGN

Prospective cohort study.

METHODS

Ninety-four eyes of 66 patients received an FAc implant. Eyes with persistent or recurrent DME were managed with pro re nata anti-VEGF agents. Demographic data and medical history were collected at baseline. Best-corrected visual acuity and central macular thickness were measured every 2 months. The 3 outcomes explored were 1) the risk factors for administration of additional anti-VEGF agents, 2) the interval from FAc to first anti-VEGF injection; and 3) the number of anti-VEGF doses required to maintain regression of DME.

RESULTS

Eighteen eyes (19.1%) of 13 patients received 1.3 ± 0.6 anti-VEGF injections. These eyes had significantly thicker central macular thickness at baseline and over the entire follow-up period (P < .001); best-corrected visual acuity was similar at every time point to eyes that were not receiving extra DME treatments. Eyes without preexistent panretinal photocoagulation (PRP) had a higher risk to undergo supplemental treatments (hazard ratio 1.5 [95% confidence interval 1.1-2.5, P = .03). The interval between FAc implant and the first anti-VEGF had a significant linear positive relationship with the number of dexamethasone implants before FAc implant (P = .002, R² = 0.47). No association was found between baseline factors and the number of injections given.

CONCLUSION

Anti-VEGF agents are efficient treatment to maintain visual acuity in residual/recurrent DME after FAc. Patients with higher baseline central macular thickness and with no previous central macular thickness are more likely to require additional treatments to control DME.

Effectiveness of 190 µg Fluocinolone Acetonide and 700 µg Dexamethasone Intravitreal Implants in Diabetic Macular Edema Using the Area-Under-the-Curve Method: The CONSTANT Analysis

Purpose

Calculations of area-under-the-curve (AUC) provide the average letters gained across the entire treatment period, which may be a better estimate of long-term effectiveness than single time-point outcomes, particularly when it comes to sustained-release therapies.

Materials and Methods

The AUC method was used to compare the efficacy of the 0.2 µg/day fluocinolone acetonide (total dose of 0.19 mg; FAc) and dexamethasone (DEX) 700 µg implants based on published data from their respective Phase 3 FAME (Fluocinolone Acetonide for Macular Edema) and MEAD pivotal clinical trials in diabetic macular edema (DME). Best-corrected visual acuity (BCVA) letter scores were collated from the FAME trial and compared with those reported in MEAD. The trapezoidal rule was then used to calculate AUC, based on BCVA letter score, from baseline to Month 36 (FAME)/Month 39 (MEAD) and presented as an overall mean visual acuity change per day.

Results

Treatment with either the FAc or DEX implant resulted in an improved BCVA over the treatment period compared with sham. This effect was statistically greater (p=0.029) for the FAc implant than the DEX implant (5.2 vs 3.5 letters/day, respectively) and even greater in the recurrent DME subgroup (p<0.001; 6.9 vs 3.5 letters/day, respectively).

Conclusion

Although direct comparisons between trial cohorts cannot be performed, this analysis indicated that, in their respective pivotal clinical trial cohorts, treatment with the FAc implant provides better long-term visual acuity outcomes and a lower treatment burden than achieved with the DEX implant.

Clinical impact of the 0.2 µg/day fluocinolone acetonide intravitreal implant: outcomes from the ILUVIEN® clinical evidence study in Portugal

Introduction:

The ILUVIEN^® (fluocinolone acetonide) Clinical Evidence in Portugal (ICE-PT) study is a retrospective, multicenter, observational study evaluating the effectiveness and safety of the FAc implant in patients with diabetic macular edema.

Methods:

Patients included in this study had received the 0.2 µg/day fluocinolone acetonide implant for the treatment of diabetic macular edema and had measurements of visual acuity and retinal thickness assessed by optical coherence tomography for at least 12 months pre- and post-fluocinolone acetonide implant administration, with ⩾2 follow-up visits. Outcomes measured included visual acuity, central foveal thickness, and intraocular pressure.

Results:

There was a significant increase in mean visual acuity compared with baseline at 3, 6, 9, and 12 months post-fluocinolone acetonide in both the overall study population and the pseudophakic subgroup (p < 0.05 at all time points in both groups). A significant reduction in mean central foveal thickness compared with baseline was seen in the overall study population at 3, 6, 9, and 12 months post-fluocinolone acetonide (p < 0.05 at all time points). At 12-month post-fluocinolone acetonide, a small but significant intraocular pressure increase of 1.0 mmHg was seen in the overall study population.

Conclusion:

The results of this analysis show that switching from the current standard of care to the fluocinolone acetonide implant leads to beneficial effects in terms of vision and retinal structure in patients with diabetic macular edema and that patients benefited from FAc implant administration, regardless of lens status.

Rapid Structural and Functional Improvements with the 0.19 mg Fluocinolone Acetonide Intravitreal Implant for Patients with DME and Low Visual Acuity: 6-Month Data from the UAE

Purpose

The 0.19 mg fluocinolone acetonide (FAc) intravitreal implant is approved in the United Arab Emirates (UAE) for treating diabetic macular edema (DME) in patients previously treated with a course of corticosteroids and that did not have a clinically significant rise in intraocular pressure (IOP). This ongoing study is assessing its effectiveness and safety in pseudophakic patients with DME in clinical practice from a single center in the UAE.

Methods

A retrospective, ongoing 6-month audit study (NCT03590587), in which 22 eyes from 22 patients were treated with a single FAc intravitreal implant after treatment with a prior course of corticosteroids. Outcomes assessed included mean changes in best-corrected visual acuity (BCVA), central macular thickness (CMT), and IOP. Six-month follow-up data are presented.

Results

After FAc implantation, mean BCVA improved rapidly, increasing by 25.4 ± 3.0 letters (mean±SEM) from baseline to Month 6 (p<0.0001). At 6 months, BCVA had improved by 15 letters or more in 91% of eyes (n=20/22). Mean CMT decreased by 267.0 ± 20.1 µm from baseline to Month 6 (p<0.0001). Over 85% of eyes (n=19/22) had a CMT less than 300 µm at 6 months. Mean IOP increased by 2.9 ± 0.7 mmHg from baseline to Month 6 (p<0.001). All eyes except 2 had an IOP of 21 mmHg or lower. At Month 6, five eyes (23%) needed IOP-lowering therapy.

Conclusion

Injection of the FAc intravitreal implant rapidly and significantly improved BCVA and CMT within 6 months. These rapid and significant improvements exceed those reported in other real-world studies. Safety signals were consistent with corticosteroid class effects. The FAc implant may be a useful treatment option for patients in the UAE, particularly those with sight threatening DME requiring rapid functional improvements.