Large submacular hemorrhages after verteporfin therapy

Submacular hemorrhage in neovascular age-related macular degeneration: A synthesis of the literature

Large submacular hemorrhage, an uncommon manifestation of neovascular age-related macular degeneration, may also occur with idiopathic polypoidal choroidal vasculopathy. Submacular hemorrhage damages photoreceptors owing to iron toxicity, fibrin meshwork contraction, and reduced nutrient flux, with subsequent macular scarring. Clinical and experimental studies support prompt treatment, as tissue damage can occur within 24 hours. Without treatment the natural history is poor, with a mean final visual acuity (VA) of 20/1600. Reported treatments include retinal pigment epithelial patch, macular translocation, pneumatic displacement, intravitreal or subretinal tissue plasminogen activator, intravitreal anti-vascular endothelial growth factor (VEGF) drugs, and combinations thereof. In the absence of comparative studies, we combined eligible studies to assess the VA change before and after each treatment option. The greatest improvement occurred after combined pars plana vitrectomy, subretinal tissue plasminogen activator, intravitreal gas, and anti-vascular endothelial growth factor treatment, with VA improving from 20/1000 to 20/400. The best final VA occurred using combined intravitreal tissue plasminogen activator, gas, and anti-vascular endothelial growth factor therapy, with VA improving from 20/200 to 20/100. Both treatments had an acceptable safety profile, but most studies were small, and larger randomized controlled trials are needed to determine both safety and efficacy.

Causes of unsuccessful ranibizumab treatment in exudative age-related macular degeneration in clinical settings

PURPOSE

To identify the causes of loss of vision after ranibizumab therapy in patients with exudative age-related macular degeneration treated in three clinical settings.

METHODS

A retrospective multicentric analysis of 290 consecutive eyes comprising cohorts from 3 clinical settings showed that 21 eyes lost ≥ 15 letters on the Early Treatment Diabetic Retinopathy Study chart 1 year after the start of ranibizumab treatment. Fundus images of these eyes were analyzed by two independent readers to investigate the causes of visual loss. The three cohorts were compared. A search was made for factors predisposing to visual loss. A second analysis was performed to compare the baseline characteristics of patients who gained (visual acuity gainers) or lost (visual acuity losers) ≥ 15 letters.

RESULTS

Among the 290 eyes included, the proportions from each center experiencing visual loss were not significantly different (mean, 7.24%, P = 0.2631). Mean visual loss of affected eyes was 27 letters. There was no significant difference between these eyes and others as regards age and gender of patients, laterality, type of choroidal neovascularization, number of visits, or initial visual acuity. Visual loss was secondary to the progression of atrophy in eight eyes, fibrosis in five eyes, a combination of fibrosis and atrophy in three eyes, severe subretinal hemorrhage in three eyes, and retinal pigment epithelial tear in two eyes. A significant difference between visual acuity gainers and losers was observed for 2 parameters: age of patients, 80.9 ± 5.3 years in visual acuity losers versus 77.5 ± 7.3 years in visual acuity gainers (P = 0.0473) and visual acuity at diagnosis, respectively, 56.2 ± 11.2 versus 49.0 ± 12.0 (P = 0.0288).

CONCLUSION

Although uncommon, visual loss may occur during ranibizumab treatment and is because of the natural course of age-related macular degeneration in most cases.

Subretinal recombinant tissue plasminogen activator and pneumatic displacement for the management of subretinal hemorrhage occurring after anti-VEGF injections for wet AMD

We describe three cases of submacular hemorrhage that occurred two to four days after anti-VEGF intravitreal injection for occult choroidal neovascularisation in age-related macular degeneration and their management with 25 gauge pars plana vitrectomy with injection of subretinal recombinant tissue plasminogen activator (rTPA) followed by fluid-air exchange and postoperative prone position. Vitrectomy, subretinal rTPA injection and fluid-gas exchange apply as a safe and effective treatment in these cases. Functional results seem to be positive especially if surgical treatment is promptly performed.

[Massive hemorrhage following photodynamic therapy in exudative ARMD]

Photodynamic therapy (PDT) can prevent visual loss and the risk of hemorrhage in exudative ARMD. Nevertheless, it can sometimes complicate with massive hemorrhage. We report the case of a massive macular hemorrhage 4 days after a first treatment with dynamic phototherapy (PDT) with Visudyne for rapidly progressive (6 months) exudative AMD with occult neovessels in an 86-year-old female. The rationale for PDT was a rapidly progressive lesion with preserved visual acuity (20/40). Four days after injection, a massive submacular hemorrhage of 6 disc diameter developed, with a dramatic decrease in visual acuity. This hemorrhage recovered within 6 months, producing large, fibroglial, submacular scarring with changes on the retinal pigment epithelium. This case highlights the possible side effects of this treatment.

Photodynamic therapy for neovascular age-related macular degeneration

BACKGROUND

In neovascular age-related macular degeneration (AMD) new vessels grow under the retina distorting vision and leading to scarring. This is exacerbated if the blood vessels leak. Photodynamic therapy (PDT) has been investigated as a way to treat the neovascular membranes without affecting the retina.

OBJECTIVES

The aim of this review was to examine the effects of PDT in the treatment of neovascular AMD.

SEARCH STRATEGY

We searched CENTRAL (Issue 1, 2007), MEDLINE (1966 to March 2007), EMBASE (1980 to March 2007). We contacted experts in the field and searched the reference lists of relevant studies.

SELECTION CRITERIA

We included randomised trials of PDT in people with choroidal neovascularisation due to AMD.

DATA COLLECTION AND ANALYSIS

Two authors independently extracted the data. Risk ratios were combined using a fixed-effect model after testing for heterogeneity.

MAIN RESULTS

Three published trials were identified that randomised 1022 participants to verteporfin therapy compared to 5% dextrose in water. The TAP and VIP trials were performed by the same investigators using largely the same clinical centres and funded by manufacturers of verteporfin. Outcome data were available at 12 and 24 months after the first treatment. Participants received on average five treatments over two years. The risk ratio of losing three or more lines of visual acuity at 24 months comparing the intervention with the control group was 0.77 (95% confidence interval 0.69 to 0.87). The risk ratio of losing six or more lines of visual acuity at 24 months comparing the intervention with the control group was 0.62 (95% confidence interval 0.50 to 0.76). The results at 12 months were similar to those at 24 months. The most serious adverse outcome, acute (within seven days of treatment) severe visual acuity decrease, occurs in about one in 50 patients. Some outcomes from the more recent VIM trial could be included in the meta-analysis but have not greatly altered the findings.

AUTHORS' CONCLUSIONS

Photodynamic therapy in people with choroidal neovascularisation due to AMD is probably effective in preventing visual loss though there is doubt about the size of the effect. Outcomes and potential adverse effects of this treatment should be monitored closely. Further independent trials of verteporfin are required to establish that the effects seen in this study are consistent and to examine important issues not yet addressed, particularly relating to quality of life and cost. However, the advent of new interventions for AMD make this unlikely.

Triamcinolone and PDT to treat exudative age-related macular degeneration and submacular hemorrhage

PURPOSE

To evaluate the efficacy of photodynamic therapy (PDT) with verteporfin and intravitreal injection of triamcinolone to treat choroidal neovascularization (CNV) with flat sub-macular hemorrhage in age-related macular degeneration (ARMD).

METHODS

A prospective, consecutive, noncomparative, interventional case series study was performed at the Instituto Oftalmologico de Alicante, Spain. Ten consecutive eyes from 10 patients with flat submacular hemorrhage secondary to ARMD were treated by PDT followed by intravitreal injection of 19.4+/-2.1 mg/0.1 mL triamcinolone 5 days later. PDT was repeated if leakage from the CNV appeared on fluorescein angiography (FA) at 3 months follow-up intervals. Main outcome measures were best-corrected visual acuity (BCVA) before and after treatment, post-treatment FA, results, and complications.

RESULTS

Stable or improved BCVA was achieved in seven eyes at 6 months follow-up. Complete absence of leakage in FA was observed in five and in eight eyes at 3 and 6 months follow-up, respectively. Intraocular pressure rose in seven eyes.

CONCLUSIONS

PDT followed by intravitreal triamcinolone seems useful to treat CNV with flat submacular hemorrhage in ARMD. However, further studies with longer follow-up and randomized controlled trials are necessary to assess its efficacy in the management of this difficult clinical problem.

Photodynamic therapy for neovascular age-related macular degeneration

BACKGROUND

In neovascular age-related macular degeneration (AMD) new vessels grow under the retina distorting vision and leading to scarring. This is exacerbated if the blood vessels leak. Photodynamic therapy (PDT) has been investigated as a way to treat the neovascular membranes without affecting the retina.

OBJECTIVES

The aim of this review was to examine the effects of PDT in the treatment of neovascular AMD.

SEARCH STRATEGY

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (which includes the Cochrane Eyes and Vision Group Trials Register) on The Cochrane Library (Issue 1, 2005), MEDLINE (1966 to January 2005), EMBASE (1980 to January 2005). We used the Science Citation Index to search for reports that cited relevant studies. We contacted experts in the field and searched the reference lists of relevant studies.

SELECTION CRITERIA

We included randomised trials of PDT in people with choroidal neovascularisation due to AMD.

DATA COLLECTION AND ANALYSIS

Two authors independently extracted the data. Relative risks were combined using a fixed-effect model after testing for heterogeneity.

MAIN RESULTS

Two published trials were identified that randomised 948 participants to verteporfin therapy compared to 5% dextrose in water. Both trials were performed by the same investigators using largely the same clinical centres and funded by manufacturers of verteporfin. Outcome data were available at 12 and 24 months after the first treatment. Participants received on average five treatments over two years. The relative risk of losing three or more lines of visual acuity at 24 months comparing the intervention with the control group was 0.77 (95% confidence interval 0.69 to 0.87). The relative risk of losing six or more lines of visual acuity at 24 months comparing the intervention with the control group was 0.62 (95% confidence interval 0.50 to 0.76). The results at 12 months were similar to those at 24 months. The most serious adverse outcome, acute (within 7 days of treatment) severe visual acuity decrease, occurs in about one in 50 patients.

AUTHORS' CONCLUSIONS

Photodynamic therapy in people with choroidal neovascularisation due to AMD is probably effective in preventing visual loss though there is doubt about the size of the effect. Outcomes and potential adverse effects of this treatment should be monitored closely. Further independent trials of verteporfin are required to establish that the effects seen in this study are consistent and to examine important issues not yet addressed, particularly relating to quality of life and cost.

Photodynamic therapy for subfoveal choroidal neovascularization secondary to age-related macular degeneration

BACKGROUND

To evaluate the safety and efficacy of verteporfin photodynamic therapy (PDT) in patients with subfoveal choroidal neovascularization (CNV) secondary to age-related macular degeneration (AMD).

METHODS

We retrospectively reviewed the chart records and fluorescein angiography of patients with subfoveal CNV who were treated with verteporfin PDT between September 2001 and March 2003 and who completed at least 1 year of follow-up. The primary efficacy outcomes were the proportions of patients whose Snellen visual acuities had more than 1 line increase, no change or more than 1 line decrease 1 year after study entry compared with their baseline examinations. The secondary efficacy outcome was the changes in the logarithm of the minimum angle of resolution visual acuities at 1-year follow-up. Complications were monitored and tabulated.

RESULTS

Forty-eight eyes of 48 patients with subfoveal CNV secondary to AMD were enrolled in this study. The mean follow-up was 12.56 +/- 1.37 months. At their last visit, 10.4% of eyes had more than 1 line improvement in Snellen visual acuity, 72.9% of eyes had no change, and 16.7% experienced more than 1 line of visual acuity loss (7 eyes lost < 3 lines of Snellen visual acuity, 1 eye lost between 3 and 6 lines). None experienced more than 6 lines of visual loss. There was no statistically significant difference between baseline and final visual acuity for eyes with predominantly classic CNV, minimally classic CNV and occult without classic CNV (Wilcoxon Signed Rank test, p = 0.59 ). There was a positive correlation between baseline visual acuity and final visual outcome (Kruskal-Wallis test, p = 0.002). No severe systemic and ocular adverse events were encountered.

CONCLUSION

Of our patients with subfoveal CNV secondary to AMD, 83.3% could maintain or improve their visual acuity 1 year after verteporfin PDT. The risk of deterioration in visual acuity due to subfoveal CNV could be reduced by verteporfin PDT. Baseline visual acuity is significantly correlated with the final proportion of visual outcome.