Eye health in rural Australia

Using geographic information systems to map eye care service distribution in rural and remote Western Australia

BACKGROUND

Many rural residents face barriers to eye care access. Government workforce data show a maldistribution of eye care providers in Western Australia however, no detailed information is available on regional coverage within the state. This study aimed to identify and map all eye care services in rural and remote Western Australia and to calculate the regional workforce rates.

METHODS

A survey was sent to all optometry and ophthalmology practices in rural and remote Western Australia with questions on practitioner and equipment availability. Information on visiting services was captured directly through organisations as well as the survey. Geographic information systems were used to map service locations, calculate coverage of services relative to the population, and calculate full-time equivalent (FTE) per 100,000 of the population for each profession.

RESULTS

A total of 58 optometry practices, 8 ophthalmology practices, 113 visiting optometry services and 43 visiting ophthalmology services in rural and remote Western Australia were identified and mapped. Most of the population (97.2%) lived within 100 km of an eye care service. Overall FTE per 100,000 for optometry and ophthalmology were 12.1 and 2.4, respectively. Regional FTE per 100,000 ranged from 2.1 to 19.5 for optometry and 0 to 4.2 for ophthalmology.

CONCLUSIONS

The results show broad coverage of visiting services but highlights regional discrepancies in optometry and ophthalmology workforce rates, with several regions failing to meet FTE recommendations.

Rural Eye Care Access, Workforce Challenges and Opportunities: Perspectives of the Eye Health Workforce in Western Australia

OBJECTIVE

Rural residents face numerous barriers to accessing eye care services that contribute to disparities in eye health outcomes. This study aimed to explore the perspectives of the rural workforce on opportunities to improve patient access to eye care services, as well as understand the ways the workforce can be supported.

SETTING

Regional, rural and remote Western Australia.

DESIGN

A qualitative descriptive approach was taken. Maximum variation and snowball sampling were used, and semi-structured interviews were conducted until data saturation. Interviews were recorded, transcribed verbatim and analysed using inductive thematic analysis.

PARTICIPANTS

Seventeen semi-structured interviews were conducted with six ophthalmologists, 10 optometrists and one non-clinician involved in delivering eye care services in rural Western Australia.

RESULTS

Four major themes were identified. 'Access to care' pertained to barriers and facilitators of timely and appropriate eye care for rural residents. 'Need for collaborative care framework' between ophthalmology and optometry emerged as a key opportunity to decrease wait times and maximise efficiency of visiting services. 'Motivation to work in rural settings' and 'challenges of working in rural settings' suggested opportunities to support the workforce.

CONCLUSION

This study finds that continued support through financial, personal, and professional means is important for workforce retention and satisfaction among eye care service providers in rural Western Australia. Although collaborative care models currently exist, the extent of collaboration between practitioners varies considerably. Further research is required on developing innovative, scalable and sustainable models of care to meet the eye care needs in rural Australia.

Comparison of three modalities of teleophthalmology delivery in regional Western Australia during the COVID-19 lock-down

CLINICAL RELEVANCE

In conjunction with local optometry services, telehealth may be used in to provide specialist care for patients living in rural areas underserved by ophthalmology.

BACKGROUND

To combat travel restrictions for specialist outreach to regional areas during the 2020 COVID-19 lockdown, Lions Outback Vision introduced three different modalities of teleophthalmology consultations; home-based telephone, hospital-based video, and optometry-based video. This study evaluated the utility of these in providing specialist care to rural patients during the pandemic.

METHODS

Data from patients referred during the COVID-19 lock-down period (23 March 2020 to 5 June 2020) were analysed. If sufficient clinical information and imaging were available then ophthalmologists conducted home-based telephone consultations. If further ocular imaging or examination was required, then optometry-based video or hospital-based video were used. Data were analysed using ANOVA and two-sided t tests for continuous data and Chi Square statistics for categorical data (p < 0.05).

RESULTS

Majority of the 431 consultations were conducted via home telephone (38%) or optometry-based video (37%). Indigenous patients (p = 0.014) and patients in very remote communities (p < 0.01) were more likely to receive a home-based telephone consultation. Because sufficient clinical information had already been obtained for home-based consultations, these patients were more likely to be booked for surgery than optometry (p < 0.01).Cataracts were the predominant diagnosis in optometry consults compared to hospital (p < 0.01).

CONCLUSION

Primary optometry and home telephone represent a new modality for providing specialist care for patients living in very remote regions and for Indigenous patients. When appropriate clinical testing has been completed, telephone-based ophthalmology may continue to be useful for certain conditions such as waitlisting patients for cataract surgery and should continue to be funded beyond the duration of the pandemic for rural patients.

Analysis of patient referrals from primary care to ophthalmology. The role of the optometrist

PURPOSE

The aim of this study was to characterize the quality of primary care referrals of patients to ophthalmology at the Virgen Macarena Hospital in Seville. This will enable us to optimize ophthalmologic resources and to evaluate the role of the optometrist in improving referrals.

METHODS

We performed a retrospective cross-sectional review of 220 ophthalmology consultations referred from primary care to the hospital from March to May 2022. The following data were extracted: age, sex, reason for consultation, diagnosis, priority level, whether it was an initial consultation or a follow-up visit, whether there was a secondary referral and whether the referral was appropriate. Excel (version 2312) was used for the data analysis.

RESULTS

The age range of the patients was from 3 years to 91 years. The patients were 41.8 % male and 58.2 % female. The conditions found were grouped as follows: cataracts (27.27 %), refractive errors (20.9 %), anterior segment disease (18.8 %), posterior segment disease (14.07 %), normal examination (18.63 %) and others (0.9 %). The most common reason for consultation was blurred vision or loss of vision (43.63 %). In total, 41.36 % of the consultations were considered inappropriate. The age group requiring the highest number of consultations was over 65 years (38.64 %).

CONCLUSIONS

With 41.36 percent of referrals deemed unnecessary, it is clear that referrals can be improved. This would reduce strain on the ophthalmology service and improve patient care. The importance of the optometrist in primary care is demonstrated by the fact that 20.9 % of the diagnoses were refractive errors.

Telerehabilitation for people with low vision

BACKGROUND

Low vision affects over 300 million people worldwide and can compromise both activities of daily living and quality of life. Rehabilitative training and vision assistive equipment (VAE) may help, but some visually impaired people have limited resources to attend in-person visits to rehabilitation clinics to be trained to learn to use VAE. These people may be able to overcome barriers to care through access to remote, internet-based consultation (telerehabilitation).

OBJECTIVES

To compare the effects of telerehabilitation with face-to-face (e.g. in-office or inpatient) vision rehabilitation services for improving vision-related quality of life and near reading ability in people with visual function loss due to any ocular condition. Secondary objectives were to evaluate compliance with scheduled rehabilitation sessions, abandonment rates for VAE devices, and patient satisfaction ratings.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL), which contains the Cochrane Eyes and Vision Trials Register) (2021, Issue 9); Ovid MEDLINE; Embase.com; PubMed; ClinicalTrials.gov; and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP). We did not use any language restriction or study design filter in the electronic searches; however, we restricted the searches from 1980 onwards because the internet was not introduced to the public until 1982. We last searched CENTRAL, MEDLINE Ovid, Embase, and PubMed on 14 September 2021, and the trial registries on 16 March 2022.

SELECTION CRITERIA

We included randomized controlled trials (RCTs) or controlled clinical trials (CCTs) in which participants diagnosed with low vision had received vision rehabilitation services remotely from a human provider using internet, web-based technology compared with an approach involving in-person consultations.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened titles and abstracts retrieved by the searches of the electronic databases and then full-text articles for eligible studies. Two review authors independently abstracted data from the included studies. Any discrepancies were resolved by discussion.

MAIN RESULTS

We identified one RCT/CCT that indirectly met our inclusion criteria, and two ongoing trials that met our inclusion criteria. The included trial had an overall high risk of bias. We did not conduct a quantitative analysis since multiple controlled trials were not identified.  The single included trial of 57 participants utilized a parallel-group design. It compared 30 hours of either personalized low vision training through telerehabilitation with a low vision therapist (the experimental group) with the self-training standard provided by eSight using the eSkills User Guide that was self-administered by the participants at home for one hour per day for 30 days (the comparison group). The trial investigators found a similar direction of effects for both groups for vision-related quality of life and satisfaction at two weeks, three months, and six months. A greater proportion of participants in the comparison group had abandoned or discontinued use of the eSight Eyewear at two weeks than those in the telerehabilitation group, but discontinuance rates were similar between groups at one month and three months. We rated the certainty of the evidence for all outcomes as very low due to high risk of bias in randomization processes and missing outcome data and imprecision.   AUTHORS' CONCLUSIONS: The included trial found similar efficacy between telerehabilitation with a therapist and an active control intervention of self-guided training in mostly younger to middle-aged adults with low vision who received a new wearable electronic aid. Given the disease burden and the growing interest in telemedicine, the two ongoing studies, when completed, may provide further evidence of the potential for telerehabilitation as a platform for providing services to people with low vision.

Evaluation of the initial implementation of a nationwide diabetic retinopathy screening programme in primary care: a multimethod study

OBJECTIVES

The Australian Government funded a nationwide diabetic retinopathy screening programme to improve visual outcomes for people with diabetes. This study examined the benefits and barriers of the programme, image interpretation pathways and assessed the characteristics of people who had their fundus photos graded by a telereading service which was available as a part of the programme.

DESIGN

Multimethod: survey and retrospective review of referral forms.

SETTING

Twenty-two primary healthcare facilities from urban, regional, rural and remote areas of Australia, and one telereading service operated by a referral-only eye clinic in metropolitan Sydney, Australia.

PARTICIPANTS

Twenty-seven primary healthcare workers out of 110 contacted completed a survey, and 145 patient referrals were reviewed.

RESULTS

Manifest qualitative content analysis showed that primary healthcare workers reported that the benefits of the screening programme included improved patient outcomes and increased awareness and knowledge of diabetic retinopathy. Barriers related to staffing issues and limited referral pathways. Image grading was performed by a variety of primary healthcare workers, with one responder indicating the utilisation of a diabetic retinopathy reading service. Of the people with fundus photos graded by the reading service, 26.2% were reported to have diabetes. Overall, 12.3% of eyes were diagnosed with diabetic retinopathy. Photo quality was rated as excellent in 46.2% of photos. Referral to an optometrist for diabetic retinopathy was recommended in 4.1% of cases, and to an ophthalmologist in 6.9% of cases.

CONCLUSIONS

This nationwide diabetic retinopathy screening programme was perceived to increase access to diabetic retinopathy screening in regional, rural and remote areas of Australia. The telereading service has diagnosed diabetic retinopathy and other ocular pathologies in images it has received. Key barriers, such as access to ophthalmologists and optometrists, must be overcome to improve visual outcomes.

An automated microaneurysm detector as a tool for identification of diabetic retinopathy in rural optometric practice

BACKGROUND

With the increase in the prevalence of diabetes, rural optometric clinics stand to increase their patient load and assessment of diabetic eye disease. This study aimed to assess whether automated identification of diabetic retinopathy based on the presence of microaneurysms is an effective tool in clinical practice.

METHODS

We analysed 758 fundal images of 385 patients with diabetes attending the clinic obtained using a Canon CR5 with an EOS10 digital camera through a dilated pupil. Five optometrists employed in the clinic assessed the diabetic retinopathy using binocular indirect ophthalmoscopy. The sensitivity and specificity of the automated system used to analyse the retinal fundal images was determined by comparison with optometric and ophthalmologic assessment.

RESULTS

The optometrists achieved 97 per cent sensitivity at 88 per cent specificity with respect to the ophthalmic classification for detecting retinopathy.

CONCLUSION

The automated retinopathy detector achieved 85 per cent sensitivity at 90 per cent specificity at detecting retinopathy. The automated microaneurysm detector has a lower sensitivity compared to the optometrists but meets NHMRC guidelines. It may impact on the efficiency of rural optometric practices by early identification of diabetic retinopathy. Automated assessment can save time and be cost-effective, and provide a history of changes in the retinal fundus and the opportunity for instant patient education using the digital images.

Telerehabilitation for people with low vision

BACKGROUND

Low vision affects over 300 million people worldwide and can compromise both activities of daily living and quality of life. Rehabilitative training and vision assistive equipment (VAE) may help, but some visually impaired people have limited resources to attend in-person visits at rehabilitation clinics to receive training to learn to use VAE. These people may be able to overcome barriers to care through remote, Internet-based consultation (i.e. telerehabilitation).

OBJECTIVES

To compare the effects of telerehabilitation with face-to-face (e.g. in-office or inpatient) vision rehabilitation services for improving vision-related quality of life and near reading ability in people with visual function loss due to any ocular condition. Secondary objectives were to evaluate compliance with scheduled rehabilitation sessions, abandonment rates for VAE devices, and patient satisfaction ratings.

SEARCH METHODS

We searched the Cochrane Central Register of Controlled Trials (CENTRAL) (which contains the Cochrane Eyes and Vision Trials Register) (2019, Issue 6); Ovid MEDLINE; Embase.com; PubMed; ClinicalTrials.gov, and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP). We did not use any language restriction or study design filter in the electronic searches; however, we restricted the searches from 1980 onwards because the Internet was not introduced to the public until 1982. We last searched the electronic databases on 24 June 2019.

SELECTION CRITERIA

We planned to include randomized controlled trials (RCTs) or controlled clinical trials (CCTs) in which participants diagnosed with low vision were undergoing low vision rehabilitation using an Internet, web-based technology compared with an approach involving in-person consultations.

DATA COLLECTION AND ANALYSIS

Two review authors independently screened titles and abstracts and then full-text articles against the eligibility criteria. We planned to have two review authors independently abstract data from the included studies. Any discrepancies were resolved by discussion.

MAIN RESULTS

We identified two ongoing studies, but did not find any completed RCTs and CCTs that met the inclusion criteria for this review. We did not conduct a quantitative analysis. We discussed review articles on telemedicine for facilitating communication with elderly individuals or for providing remote ophthalmological care.

AUTHORS' CONCLUSIONS

We did not find any evidence from RCTs or CCTs on the efficacy of using telerehabilitation for remote delivery of rehabilitation services to individuals with low vision. Given the disease burden and the growing interest in telemedicine, the two ongoing studies, when completed, may provide evidence in understanding the potential for telerehabilitation as a platform for providing services to people with low vision.

Knowledge and practices of eye health professionals about the availability and accessibility of child eye care services in the public sector in Swaziland

Background: International and African rights instruments stipulate that children have the right to access quality general and eye health care. Lack of access to quality eye care can have a significant negative impact on the child, family and society in general.Aim: To determine the knowledge and practices of eye care professionals about the availability and accessibility of child eye care services in the public sector in Swaziland.Setting: The study was conducted in Swaziland.Methods: This was a quantitative study design, and 15 public eye health professionals completed and returned the Questionnaire for Eye Health Professionals (QEHP).Results: Thirteen (86.7%) eye health practitioners reported that both standard practice guidelines and paediatric national guidelines for ophthalmic services were unavailable. The majority (66.7%) identified cost and unawareness of available services by parents as the most common barrier to accessing eye care services. Nine (60%) felt that they were less informed about eye health problems and 6 (40%) reported being well informed. Eight (53.3%) respondents indicated that there were no outreach programmes and 7 (46.7%) reported that their clinics offered these services. Thirteen (86.7%) eye health practitioners indicated that they were not part of teachers’ training for supporting visually impaired children, while 2 (13%) reported that they were.Conclusion: Formulation of guidelines to support eye health care service delivery in Swaziland is essential in order to improve availability, accessibility, affordability and effectiveness in the public health system.

Could adoption of the rural pipeline concept redress Australian optometry workforce issues?

People living in rural and remote areas have poorer ocular health outcomes compared with those living in metropolitan areas. Reasons for this are multiple and complex but access to care is consistently reported as a defining factor. The geographic maldistribution of eye-care professionals is a major obstacle for regional, rural and remote Australians seeking care. Research from the medical profession suggests adopting the 'rural pipeline' concept to address the issue of maldistribution. This approach appears to have had some success in medicine, and involves recruiting students from a rural background, exposing students to rural practice through placements and offering graduates incentives and support to practice rurally. Lessons could be learnt from the medical field as there is a dearth of literature describing the utilisation of the rural pipeline in allied health. However, given the differences between professions it cannot be assumed factors and results will be the same. A greater understanding is required to determine whether optometry is a profession which may benefit from the rural pipeline concept.

Occupational Exposure to Solar Radiation at Different Latitudes and Pterygium: A Systematic Review of the Last 10 Years of Scientific Literature

Pterygium is a chronic eye disease: among its recognized risk factors there is long-term exposure to ultraviolet (UV) radiation. The Sun is the main source of UV exposure: according to the World Health Organization, the Population Attributable Fraction of pterygium due to solar radiation (SR) is 42–74%. Outdoor work can deeply influence the eye exposure to solar UV rays, but, despite this, pterygium is currently not adequately considered as a possible occupational disease in this working category, at least in Europe. For this reason, we performed a systematic review of the scientific literature published in the last ten years (2008–2017) considering the role of outdoor work as a risk factor for pterygium, in order to give new support for the prevention of this UV related disease in workers. We identified 29 relevant papers. Our results show that pterygium prevalence highly increased with latitude and mean annual UV index, and outdoor work is one of the most relevant risk factors, as well as age and male sex, both in high risk and in moderate risk World areas considering the environmental UV levels. Accordingly, pterygium occurring in outdoor workers should be considered an occupational disease. Moreover, our findings clearly support the need of further research on more effective prevention of the occupational risk related to long-term solar radiation exposure of the eye.

What do patients with diabetes and providers think of an innovative Australian model of remote diabetic retinopathy screening? A qualitative study

BACKGROUND

Diabetic retinopathy (DR) is the commonest cause of preventable blindness in working age populations, but up to 98% of visual loss secondary to DR can be prevented with early detection and treatment. In 2012, an innovative outreach DR screening model was implemented in remote communities in a state of Australia. The aim of this study was to explore the acceptability of this unique DR screening model to patients, health professionals and other key stakeholders.

METHODS

This descriptive qualitative study used semi-structured interviews with patients opportunistically recruited whilst attending DR screening, and purposefully selected health care professionals either working within or impacted by the programme. Interviews were audiotaped, transcribed and analysed using NVIVO. An iterative process of thematic analysis was used following the principles of grounded theory.

RESULTS

Interviews were conducted with fourteen patients with diabetes living in three remote communities and nine health professionals or key stakeholders. Nine key themes emerged during interviews with health professionals, key stakeholders and patients: i) improved patient access to DR screening; ii) efficiency, financial implications and sustainability; iii) quality and safety; iv) multi-disciplinary diabetes care; v) training and education; vi) operational elements of service delivery; vii) communication, information sharing and linkages; viii) coordination and integration of the service and ix) suggested improvements to service delivery.

CONCLUSIONS

The Remote Outreach DR Screening Service is highly acceptable to patients and health professionals. Challenges have primarily been encountered in communication and coordination of the service and further development in these areas could improve the programme's impact and sustainability in remote communities. The service is applicable to other remote communities nationally and potentially internationally.

An Innovative Australian Outreach Model of Diabetic Retinopathy Screening in Remote Communities

Background. Up to 98% of visual loss secondary to diabetic retinopathy (DR) can be prevented with early detection and treatment. Despite this, less than 50% of Australian and American diabetics receive appropriate screening. Diabetic patients living in rural and remote communities are further disadvantaged by limited access to ophthalmology services. Research Design and Methods. DR screening using a nonmydriatic fundal camera was performed as part of a multidisciplinary diabetes service already visiting remote communities. Images were onforwarded to a distant general practitioner who identified and graded retinopathy, with screen-positive patients referred to ophthalmology. This retrospective, descriptive study aims to compare the proportion of remote diabetic patients receiving appropriate DR screening prior to and following implementation of the service. Results. Of the 141 patients in 11 communities who underwent DR screening, 16.3% had received appropriate DR screening prior to the implementation of the service. In addition, 36.2% of patients had never been screened. Following the introduction of the service, 66.3% of patients underwent appropriate DR screening (p = 0.00025). Conclusion. This innovative model has greatly improved accessibility to DR screening in remote communities, thereby reducing preventable blindness. It provides a holistic, locally appropriate diabetes service and utilises existing infrastructure and health workforce more efficiently.

Telerehabilitation for people with low vision

BACKGROUND

Low vision affects over 300 million people worldwide and can compromise both activities of daily living and quality of life. Rehabilitative training and vision assistive equipment (VAE) may help, but some visually impaired people have limited resources to attend in-person visits at rehabilitation clinics. These people may be able to overcome barriers to care through remote, Internet-based consultation (i.e., telerehabilitation).

OBJECTIVES

To compare the effects of telerehabilitation with face-to-face (e.g., in-office or inpatient) vision rehabilitation services for improving vision-related quality of life and reading speed in people with visual function loss due to any ocular condition. Secondary objectives are to evaluate compliance with scheduled rehabilitation sessions, abandonment rates for visual assistive equipment devices, and patient satisfaction ratings.

SEARCH METHODS

We searched CENTRAL (which contains the Cochrane Eyes and Vision Group Trials Register) (2015 Issue 5), Ovid MEDLINE, Ovid MEDLINE In-Process and Other Non-Indexed Citations, Ovid MEDLINE Daily, Ovid OLDMEDLINE (January 1980 to June 2015), EMBASE (January 1980 to June 2015), PubMed (1980 to June 2015), ClinicalTrials.gov (www.clinicaltrials.gov) and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) (www.who.int/ictrp/search/en). We did not use any language restriction or study design filter in the electronic searches; however, we restricted the searches from 1980 onwards because the Internet was not introduced to the public until 1982. We last searched the electronic databases on 15 June 2015.

SELECTION CRITERIA

We planned to include randomized controlled trials (RCTs) or controlled clinical trials (CCTs) in which participants were diagnosed with low vision and were undergoing low vision rehabilitation using an Internet, web-based technology compared with an approach based on in-person consultations.

DATA COLLECTION AND ANALYSIS

Two authors independently screened titles and abstracts, and then full-text articles against the eligibility criteria. We planned to have two authors independently abstract data from included studies. We resolved discrepancies by discussion.

MAIN RESULTS

We did not find any study that met the inclusion criteria for this review and, hence, we did not conduct a quantitative analysis. As a part of the background, we discussed review articles on telemedicine for facilitating communication with elderly individuals or for providing remote ophthalmological care.

AUTHORS' CONCLUSIONS

We did not find any evidence on whether the use of telerehabilitation is feasible or a potentially viable means to remotely deliver rehabilitation services to individuals with low vision. Given the disease burden and the growing interest in telemedicine, there is a need for future pilot studies and subsequent clinical trials to explore the potential for telerehabilitation as a platform for providing services to people with low vision.

The interactions of genes, age, and environment in glaucoma pathogenesis

Glaucoma, a progressive degenerative condition that results in the death of retinal ganglion cells, is one of the leading causes of blindness, affecting millions worldwide. The mechanisms underlying glaucoma are not well understood, although years of studies have shown that the largest risk factors are elevated intraocular pressure, age, and genetics. Eleven genes and multiple loci have been identified as contributing factors. These genes act by a number of mechanisms, including mechanical stress, ischemic/oxidative stress, and neurodegeneration. We summarize the recent advances in the understanding of glaucoma and propose a unified hypothesis for glaucoma pathogenesis. Glaucoma does not result from a single pathological mechanism, but rather a combination of pathways that are influenced by genes, age, and environment. In particular, we hypothesize that, in the presence of genetic risk factors, exposure to environment stresses results in an earlier age of onset for glaucoma. This hypothesis is based upon the overlap of the molecular pathways in which glaucoma genes are involved. Because of the interactions between these processes, it is likely that there are common therapies that may be effective for different subtypes of glaucoma.

Use of digital retinal imaging in screening for retinopathy of prematurity

The frequency of premature births is increasing world-wide. This factor, combined with improved survival and revised screening criteria, is resulting in an increased workload in screening for retinopathy of prematurity. Digital retinal imaging is emerging as an important alternative tool for diagnosing retinopathy of prematurity, and its use has even been extended to developing countries. Neonatal nurses and technicians can be trained to use digital imaging devices effectively. This is important in areas that do not have ready access to paediatric ophthalmologists. The ability to transfer images electronically makes it a valuable tool in telemedicine, while the ability to store and retrieve images is also advantageous from a medico-legal perspective. Image analysis software can further improve the accuracy of diagnosis. The main limitation of this technology is its high capital cost.

Access to eye health services among indigenous Australians: an area level analysis

BACKGROUND

This project is a community-level study of equity of access to eye health services for Indigenous Australians.

METHODS

The project used data on eye health services from multiple sources including Medicare Australia, inpatient and outpatient data and the National Indigenous Eye Health Survey.The analysis focused on the extent to which access to eye health services varied at an area level according to the proportion of the population that was Indigenous (very low = 0-1.0%, low = 1.1-3.0%, low medium = 3.1-6.0%, high medium = 6.1-10.0%, high = 10.1-20.0%, very high = 20 + %). The analysis of health service utilisation also took into account age, remoteness and the Socioeconomic Indices for Areas (SEIFA).

RESULTS

The rate of eye exams provided in areas with very high Indigenous populations was two-thirds of the rate of eye exams for areas with very low indigenous populations. The cataract surgery rates in areas with high medium to very high Indigenous populations were less than half that reference areas. In over a third of communities with very high Indigenous populations the cataract surgery rate fell below the World Health Organization (WHO) guidelines compared to a cataract surgery rate of 3% in areas with very low Indigenous populations.

CONCLUSIONS

There remain serious disparities in access to eye health service in areas with high Indigenous populations. Addressing disparities requires a co-ordinated approach to improving Indigenous people's access to eye health services. More extensive take-up of existing Medicare provisions is an important step in this process. Along with improving access to health services, community education concerning the importance of eye health and the effectiveness of treatment might reduce reluctance to seek help.

Risk factors for glaucoma: what do they really mean?

Glaucoma is an insidious eye disease, potentially putting 4% of older Australians at risk of blindness, unless detected sufficiently early for initiation of effective treatment. This paper reports on the strengths of evidence and glaucoma risk factors that can be identified by primary health care providers from a patient's history. A comprehensive search of peer-reviewed databases identified relevant secondary evidence published between 2002 and 2007. Risk factors that could be determined from a patient's history were identified. A novel glaucoma risk factor reference guide was constructed according to evidence strength and level of concern regarding risk of developing glaucoma. The evidence is strong and consistent regarding the risk of developing glaucoma, and elevated intraocular pressure, advancing age, non-Caucasian ethnicity and family history of glaucoma. There is moderate evidence of association with glaucoma, and migraine, eye injury, myopia and long-term use of corticosteroids. There is conflicting evidence for living in a rural location, high blood pressure, diabetes and smoking. Early detection of people at risk of developing glaucoma can be initiated using our risk factor guide coupled with a comprehensive patient history. Timely future assessment and subsequent management strategies for at-risk individuals can then be effectively and efficiently actioned.

A five-year retrospective study of the epidemiological characteristics and visual outcomes of patients hospitalized for ocular trauma in a Mediterranean area

Background

To determine the epidemiological characteristics and visual outcome of ocular trauma in southern Italy.

Methods

All cases of ocular trauma admitted to Department of Ophthalmology of Palermo University, Italy, from January 2001–December 2005 were retrospectively reviewed for open- or closed-globe injury (OGI or CGI). Data extracted included age, sex, residence, initial and final visual acuity (VA), cause and treatment of injury, hospitalization. The injuries were classified by Ocular Trauma Classification System (OTCS) and Birmingham Eye Trauma Terminology (BETT). We also referred to the Ocular Trauma Score (OTS) in evaluating the final visual outcome.

Results

Of the 298 eyes, there were 146 OGI and 152 CGI. Fifty eyes (16.8%) had an intraocular foreign body (IOFB). The annual incidence of eye injuries was 4.9 per 100,000. Most injuries occurred in men (84.6%, p < 0.0005), with an average age of 33.0 vs. 49.9 for women (p = 0.005). Cause of injury differed significantly by gender (p = 0.001) and urban vs. rural location (p = 0.009). The most frequent causes in men were outdoor activities related injuries (30.9%), work-related (25.4%), and sport-related (17.5%), and in women were home-related (52.2%) and outdoor activities related injuries (30.4%). In urban areas, road accidents were more frequent; in rural areas, work-related injuries were more frequent with a greater rate of IOFBs than in urban areas (p = 0.002).

The incidence of OGI and CGI differed in work-related injuries (p < 0.0005), sport-related injuries (p < 0.0005), and assaults (p = 0.033). The final visual acuity was 20/40 (6/12) or better in 144 eyes (48.3%), 20/40–20/200 (6/12–6/60) in 90 eyes (30.2%), and <20/200 (6/60) or less in 46 eyes (15.5%). Eighteen eyes (6%) had a final acuity of no light perception. Of those eyes that presented with hand motion vision or better, 220 (86.6%) had a final vision of better than 20/200 (6/60). Initial visual acuity was found to be correlated with final visual acuity (Spearman's correlation coefficient = 0.658; p < 0.001). The likelihood of the final visual acuities in the OTS categories was correlated to that of the OTS study group in 12 of 14 cases (85.7%).

Conclusion

This analysis provides insight into the epidemiology of patients hospitalized for ocular trauma. The findings indicate that ocular trauma is a significant cause of visual loss in this population.

Socioeconomic and rural differences for cataract surgery in Western Australia

BACKGROUND

To examine the relationship between socioeconomic factors, residential locality and cataract surgery incidence.

METHODS

This was a population-based study using the Western Australian Data Linkage System to identify all cataract operations performed in patients aged 50+ years in 1996 and 2001. Patients' residential addresses at the time of operation were geocoded to census localities. Using census-derived indices, procedures were categorized into socioeconomic groups and residential locations (metropolitan and rural). Poisson regression was used to analyse for differences in procedure rates.

RESULTS

The crude cataract surgery rate in Western Australia increased from 4458 to 6631 procedures per million person-years between 1996 and 2001. Female and older patients underwent more surgery. Metropolitan residents were more likely to undergo surgery compared with rural residents; a difference that increased by 17% between 1996 and 2001 (1996: incidence rate ratio [IRR] 1.07, 95% confidence interval [CI] 1.02-1.13; 2001: IRR 1.24, 95% CI 1.18-1.29). A pronounced 'U-shaped' pattern of difference had developed for socioeconomic disadvantage by 2001. The most advantaged underwent 9% more surgery than the most disadvantaged. Rates in the middle two groups were less than the lowest one.

CONCLUSION

There was growing inequity in the rates of cataract surgery for rural and poorer patients between 1996 and 2001. These differences partly reflect the increasingly two-tiered Australian health system with more privately provided cataract surgery in urban areas.

Epidemiology of open- and closed-globe trauma presenting to Cairns Base Hospital, Queensland

PURPOSE

To review the epidemiology of serious ocular trauma presenting to Cairns Base Hospital, from the far north Queensland health districts.

METHODS

A retrospective study of cases from January 1995 to November 2002 inclusive. Cases were analysed with respect to demographics, cause and nature of injury, method of transport and time to and type of ophthalmic treatment, and visual outcomes.

RESULTS

There were 226 cases identified, including 71 open-globe and 155 closed-globe injuries. The annual rate of injury was 3.7 per 100 000 for open-globe and 11.8 per 100 000 in total. The Aboriginal and Torres Strait Islander population from the far north Queensland districts showed a disproportionate incidence, with 38% of the total number of injuries, despite representing only 12.3% of the population. Assault in the Aboriginal and Torres Strait Islander population resulted in 69.6% of injuries in men and 75.8% of injuries in women. Of all assaults 76.2% were alcohol-related. The majority (71.5%) of injuries in the Caucasian population were due to accidental blunt and sharp trauma. In total, 77.4% of injuries occurred in men, with an average age of 31 years. Of all open and closed injuries in the study, a final visual acuity of 6/12 or better was achieved in 47.8% of eyes and a final visual acuity of 6/60 or less occurred in 17.7% of patients, 20.8% patients were lost to follow up. In total, 14.1% of open injuries required enucleation/evisceration.

CONCLUSIONS

The incidence of ocular trauma in far north Queensland is equal to other Australian populations. However, there is a disproportionately high incidence in the Aboriginal and Torres Strait Islander population. Alcohol-related assault is a significant cause of visual loss in the Aboriginal and Torres Strait Islander population. Closed-globe injuries are more common than open globe; however, the latter have poorer visual prognosis. Initial visual acuity of all injuries correlated with final visual acuity.

Teleophthalmology-Assisted Corneal Foreign Body Removal in a Rural Hospital

This paper describes two cases of using telementoring from the Prince of Wales Hospital (POWH) Ophthalmology Department, Sydney, to Bourke Base hospital, a rural hospital in far west New South Wales, Australia. Eye trauma occurs frequently in a rural setting, and it can be difficult to assess the extent of the injury without a specialist ophthalmic service. One of the aims of the teleophthalmology is to facilitate the transfer of ophthalmic skills to local health providers such as general practitioners. We demonstrate that the removal of corneal foreign bodies and rust rings can be effectively supervised via teleophthalmology.