Advocacy for eye care

CLEAR - Scleral lenses

Scleral lenses were the first type of contact lens, developed in the late nineteenth century to restore vision and protect the ocular surface. With the advent of rigid corneal lenses in the middle of the twentieth century and soft lenses in the 1970's, the use of scleral lenses diminished; in recent times there has been a resurgence in their use driven by advances in manufacturing and ocular imaging technology. Scleral lenses are often the only viable form of contact lens wear across a range of clinical indications and can potentially delay the need for corneal surgery. This report provides a brief historical review of scleral lenses and a detailed account of contemporary scleral lens practice including common indications and recommended terminology. Recent research on ocular surface shape is presented, in addition to a comprehensive account of modern scleral lens fitting and on-eye evaluation. A range of optical and physiological challenges associated with scleral lenses are presented, including options for the clinical management of a range of ocular conditions. Future applications which take advantage of the stability of scleral lenses are also discussed. In summary, this report presents evidence-based recommendations to optimise patient outcomes in modern scleral lens practice.

In vitro validation of the amoebicidal activity of commercial eye drops as second activity

The validation of anti-Acanthamoeba activity of commercial eye drops has gained a great interest recently and a growing number of commercials eye drop were evaluated for their aptitude to inhibit Acanthamoeba as a second pharmacological effect. In the present study, three different eye drops, commercializing in Spain, including TobraDex, Cusimolol and Colircusi antiedema have been tested in vitro against trophozoites and cysts stage of the facultative pathogen Acanthamoeba. The alamarBlue™ method was used to evaluate both trophocidal and cysticidal properties. The most active eye drops were tested for their impact on some programmed cell death features. We found out that the cells inhibition was strain and eye drop dependent, and 5% eye drop was able to eliminate both trophozoite and cyst stage of Acanthamoeba spp. A treatment of 24 h with 5% of TobraDex or Cusimolol was able to show DNA condensation, collapse in the mitochondrial membrane potential and reduction of the ATP level production in Acanthamoeba. We could assume that the present eye drops could induce programed cell death like process in Acanthamoeba via mitochondrial pathway.

In vitro evaluation of commercial foam Belcils® on Acanthamoeba spp

Interest in periocular (eyelid and eyelashes margins) hygiene has attracted attention recently and a growing number of commercials eye cleanser and shampoos have been marketed. In the present study, a particular eye cleanser foam, Belcils® has been tested against trophozoites and cysts on the facultative pathogen Acanthamoeba. Viability was tested by the alamarBlue™ method and the foam was tested for the induction of programmed cell death in order to explore its mode of action. We found that a 1% solution of the foam eliminated both trophozoite and cyst stage of Acanthamoeba spp. After 90 min of incubation, Belcils® induced, DNA condensation, collapse in the mitochondrial membrane potential and reduction of the ATP level production in Acanthamoeba. We conclude that the foam destroys the cells by the induction of an apoptosis-like process. The current eye cleanser could be used as part of AK therapy protocol and as prevention from AK infections for contact lens users and post-ocular trauma patients.

Comprehensive eye care - Issues, challenges, and way forward

As we move from a disease-specific care model toward comprehensive eye care (CEC), there is a need for a more holistic and integrated approach involving the health system. It should encompass not only treatment, but also prevention, promotion, and rehabilitation of incurable blindness. Although a few models already exist, the majority of health systems still face the challenges in the implementation of CEC, mainly due to political, economic, and logistic barriers. Shortage of eye care human resources, lack of educational skills, paucity of funds, limited access to instrumentation and treatment modalities, poor outreach, lack of transportation, and fear of surgery represent the major barriers to its large-scale diffusion. In most low- and middle-income countries, primary eye care services are defective and are inadequately integrated into primary health care and national health systems. Social, economic, and demographic factors such as age, gender, place of residence, personal incomes, ethnicity, political status, and health status also reduce the potential of success of any intervention. This article highlights these issues and demonstrates the way forward to address them by strengthening the health system as well as leveraging technological innovations to facilitate further care.

Glaucoma blindness-A rapidly emerging non-communicable ocular disease in India: Addressing the issue with advocacy

Glaucoma, a leading cause of irreversible blindness, can be prevented or stabilized the progression if identified early and managed it appropriately. In India, around 12 million people suffer from glaucoma, and 1.5 million are blind due to it, so making the third most common cause of blindness. More than 75% of glaucoma are undiagnosed, which perhaps represent the submerged portion of the iceberg phenomenon of the traditional disease explanations. Though glaucoma per se does not lead to mortality, glaucoma blindness is categorized as a severe form of disability (category VI) out of seven World Health Organization (WHO) classification on the global burden of diseases. Indeed, there is a large gap between the prevailing burden of glaucoma and service being delivered about its prevention compared to other leading causes of blindness in India. Considering the magnitude of the problem as well as the severity of disability, a strong and effective advocacy is an urgent call to deal glaucoma problem in the country. For a resource-limited country, where mass population based-screening programs are not feasible, alternative methods like facility-based opportunistic screening and referring the high-risk groups for early detection and treatment should be aimed. However, glaucoma should not be screened in isolation from other eye problems. In fact, screening of any potential blinding ocular problems, including glaucoma, should be a clear mandate under comprehensive eye program of the WHO to achieve Universal Eye Health Coverages. This paper highlights the strategy inclusive of advocacy to curtail the increasing burden of glaucoma blindness in India.

Formative research for the development of an Eye Health Strategic Planning and Evaluation Framework and a Checklist: A health systems approach

This formative research process aimed to develop an Eye Health Strategic Planning and Evaluation Framework and indicator Checklist. The research process utilized a multi-phased multiple methods approach including literature review, initial expert review (n = 27), findings from a Cambodian Avoidable Blindness Initiative demonstration project (2009-2012), observation and analysis of four rural sites of the Indian LV Prasad Eye Institute Pyramid Model (n = 21), and finally, a critique by Cambodian government eye health professionals/staff (n = 15), health center staff and community representatives (n = 77) and patients (n = 62). Results from three Cambodian population-based surveys (KAP n = 599, patient follow-up n = 354, and RAAB 4650) also informed the development of the Framework and the Checklist. The Framework domains include: situation analysis, determinants of accessibility, service delivery systems, operation systems, networks and linkages, outcomes, and impact. Domains were subdivided into 59 components. The Checklist consists of 253 indicator items. The Eye Health Strategic Planning and Evaluation Framework and the Checklist can assist policy makers, program planners, and evaluators to develop a comprehensive whole of systems approach to eye health care to improve coverage and utilization of services.

A situational analysis of ocular health promotion in the South African primary health-care system

BACKGROUND

South Africa has a serious burden of avoidable blindness and visual impairment, which may be due to poor ocular health promotional policies and programs or implementation. Therefore, this paper sought to critically analyse the South African primary health-care policies and programs, to identify the components of ocular health promotional policies and programs as well as how they are currently being implemented and to suggest areas that can be improved in order to minimise the burden of blindness and visual impairment.

METHODS

Triangulated quantitative and qualitative research methods were used in the study. Questionnaire and interviews were used to solicit data from national and provincial managers of different health directorates. Eye-care managers from each province also completed the questionnaire. Furthermore, relevant health policy and program documents from national and provincial departments of health were studied to identify areas relating to ocular health promotion.

RESULTS

The study found varying degrees of implementation of various ocular health promotional activities in the provinces with the majority of respondents (62 per cent) indicating that ocular health promotion was not part of their responsibility and another 81 per cent revealing that vision screening does not form part of their health promotional programs. It further revealed a lack of a dedicated directorate for ocular health-care issues and the absence of an integrated ocular health promotional policy.

CONCLUSION

Ocular health promotional activities were absent in other provinces. This may be a major contributing factor to poor ocular health promotion in South Africa and hence, the high prevalence of blindness and visual impairment. Therefore, it is recommended that an integrated ocular health promotional model (directorate and policies) be developed and be part of the South African primary health-care system.