Background: To compare screening referral recommendations made by remotely located ophthalmic technicians with those of an ophthalmologist examining digital photos obtained by a portable ophthalmic camera system powered by an iOS handheld mobile device (iPod Touch). Methods: Dilated screening eye exams were performed by ophthalmic technicians in four remote districts of Nepal. Anterior and posterior segment photographs captured with a Paxos Scope ophthalmic camera system attached to an iPod Touch 6 th generation device were uploaded to a secure cloud database for review by an ophthalmologist in Kathmandu. The ophthalmic technicians' referral decisions based on slit-lamp exam were compared to the ophthalmologist's recommendation based on the transmitted images. Results: Using the transmitted images, the ophthalmologist recommended referral for an additional 20% of the 346 total subjects screened who would not have been referred by the ophthalmic technician. Of those subjects, 34% were referred to the retina clinic. Conversely, among the 101 patients referred by the technician, the ophthalmologist concurred with the appropriateness of referral in more than 97% of cases but thought eight (2.8%) of those patients had variants of normal eye pathology. Conclusion: An ophthalmologist who reviewed data and photos gathered with the mobile device teleophthalmology system identified a significant number of patients whose need for referral was not identified by the screening technician. Posterior segment pathology was most frequently found by the remote reader and not by the technician performing dilated slit lamp examinations. These results are promising for further clinical implementation of handheld mobile devices as tools for teleophthalmic screening in resource-limited settings.
Purpose: To determine whether use of a mobile device-based ophthalmic camera by ophthalmic technicians (OTs) in village screening camps in Nepal followed by remote image interpretation by an ophthalmologist can improve detection of ocular pathology and medical decision-making. Design: Evaluation of mobile device-based ophthalmic camera through study of before and after clinical decision-making. Methods: One hundred forty patients over 18 years of age presenting to remote screening camps with best-corrected visual acuity ≤20/60 in one or both eyes were enrolled. Participants were examined by an OT with direct ophthalmoscopy. The technician recorded a diagnosis for each eye and a disposition for each patient. Patients then had anterior segment and fundus photos and/or videos taken using a smartphone-based ophthalmic camera system. Photos and videos were uploaded to a secure, HIPAA-compliant, cloud-based server, and interpreted by masked ophthalmologists from XXX, who independently recorded diagnoses and a disposition for each patient. Results: The diagnoses given by OTs and ophthalmologists differed in 42.4% of eyes. Diagnosis agreement was highest for cataract [k = 0.732, 95% confidence interval (CI) 0.65–0.81], but much lower for posterior segment (retina/optic nerve) pathology (k = 0.057, 95% CI −0.03–0.14). Ophthalmologists and OTs suggested different dispositions for 68.6% of patients. Agreement was highest for cataract extraction (k = 0.623, 95% CI 0.49–0.75), whereas agreement for referral to XXX was lower (k = 0.12, 95% CI 0.00–0.24). Conclusions: Remote ophthalmologist consultation utilizing a mobile device ophthalmic camera system is logistically feasible, easily scalable, and capable of capturing high-quality images in the setting of rural eye screening camps. Although OTs are well equipped to identify and triage anterior segment pathology, this technology may be helpful in the detection of and referral for posterior segment pathology.
Glaucoma is a leading cause of blindness worldwide. The diagnosis and management of glaucoma is especially difficult in the developing countries. Lack of cost effective screening strategies, low income, low rates of literacy and inadequate infrastructures and human resources for eye care services are the obstacles for delivering glaucoma service. Majority of people with glaucoma in developing countries usually present at an advanced stage at the time of diagnosis; which negatively affects their quality of life. Further research, proper allocation of resources and collaborative effort by blindness prevention programs will hopefully provide new evidences on cost effective ways to screen and manage glaucoma in the future. This article aims to highlight the burden of glaucoma and ways to address the challenges in developing countries.
Background: This study aimed to assess the prevalence, associated factors and awareness of hypertensive retinopathy among an elderly population with hypertension in Nepal Methods: A population-based, cross-sectional study was conducted from 2013 to 2015 in Bhaktapur district, Nepal. The sample size was 2100 subjects age 60 years and above. From this sample, all diagnosed patients with hypertension were analyzed. A detailed history was obtained, and an ocular examination was performed. Blood sugar and blood pressure were measured. Result: Information was complete for 1860 (88.57%) subjects. The age ranged from 60 to 95 years with the mean ± SD age of 69.64±7.31 years. Hypertension was found in 643 subjects (34.61%), of which 224 (12.04%) were newly diagnosed cases. Hypertensive retinopathy was found in 81 cases (12.6%). Grade 1, grade 2, and grade 3 hypertensive retinopathy comprised 53 (65.43%), 19 (23.46%), and 9 (11.11%) cases, respectively. Hypertensive retinopathy was more frequent in the age group 70-79 years (15.23%) compared to other age groups, among males (13.25%), illiterates (13.56%), diabetics (16.49%), and those with body mass index (BMI) ≥25 kg/m2 (14%). However, none of the factors was found to be statistically significant. Among the subjects with hypertension, awareness of hypertension’s effects on the eyes, retina and vision was found in 13.84%, 8.4%, and 11.98% respectively. Conclusion: Prevalence of hypertension, hypertensive retinopathy and associated factors among an elderly population were similar to other countries. Awareness of hypertensive retinopathy was found in only 8.4%. Increased emphasis should be directed toward improving awareness campaigns. Key words: Hypertension, hypertensive retinopathy, elderly, awareness, Nepal
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