Telemedicine for screening eye disease in the remote Peruvian Amazon: proof-of-concept.

Background: Improvements in technology could facilitate task-shifting and ocular disease screening in rural areas.

Methods: Visual acuity (VA) was tested using a Ministry of Health 3-m VA card. Anterior segment photographs were taken using a three-dimensional printed cellphone attachment and remotely graded.

Results: Of 326 photographed eyes, 1 was ungradable. Of 123 eyes with non-refractive visual impairment, cataract was identified in 35.8%, pterygium in 41.5%, corneal opacity in 5.7% and phthisis in 2.4%.

Conclusions: While the cause of visual impairment cannot be determined without a posterior segment examination, the smartphone attachment proved to be easy to use by non-specialist workers and identified anterior segment pathology in most cases.