Role of Tele-Ophthalmology in Improving Cataract Referral Rate in Rural Nepal - A Study at Bharatpur Eye Hospital and Its Satellite Eye Care Centers

Background Cataract is the leading cause of avoidable blindness worldwide, particularly in low- and middle-income countries where there is limited access to eye care. According to the World Health Organization, millions of people are visual impaired. In Nepal, cataract accounts for the majority of blindness and severe visual impairment, making timely identification, referral, and surgical treatment essential components of blindness prevention programs. Although Nepal has established an extensive network of community eye care services, many patients diagnosed with operable cataract fail to reach surgical centers after referral, resulting in preventable visual disability and reduced quality of life.

Bharatpur Eye Hospital delivers services through an integrated eye care network consisting of the base hospital, secondary hospitals, city clinics, and twenty satellite Eye Care Centers (ECCs). These peripheral ECCs serve as the first point of contact for rural populations by providing comprehensive eye examinations, refraction, and diagnosis of common ocular diseases, emergency management, and referral of patients requiring specialist ophthalmic care. Cataract patients diagnosed at ECCs are routinely referred to Bharatpur Eye Hospital or designated secondary hospitals for surgical evaluation and management.

Despite the existence of this structured referral pathway, hospital records demonstrate that referral completion among cataract patients remains extremely poor. Analysis of routine service data showed that only about three percent of patients referred from ECCs subsequently attended Bharatpur Eye Hospital for surgical assessment. This substantial loss to follow-up represents one of the major barriers to cataract blindness prevention within the existing eye care delivery system.

Several patient-related and health-system factors contribute to poor referral completion. Patients living in rural communities often experience long travelling distances, transportation difficulties, indirect costs associated with travel, loss of daily wages, fear of cataract surgery, limited awareness regarding disease progression, inadequate counselling, and uncertainty regarding the need for surgery. From the health system perspective, traditional referral mechanisms rely primarily on paper referral slips and verbal counselling without direct interaction between patients and ophthalmologists. Communication between peripheral eye care providers and specialists is often limited, reducing opportunities to reinforce diagnosis, answer patients' concerns, and strengthen confidence in recommended treatment. Consequently, many patients either postpone or completely abandon referral despite being diagnosed with operable cataract.

Tele-ophthalmology has emerged as an effective strategy for extending specialist ophthalmic services to underserved populations through the use of digital communication technologies. Tele-ophthalmology enables transmission of clinical findings, ocular images, and patient information from peripheral eye care facilities to ophthalmologists located at tertiary hospitals. Depending on available infrastructure, consultations may be conducted through asynchronous image transfer or synchronous real-time video communication. Previous studies have demonstrated that tele-ophthalmology improves diagnostic accuracy, facilitates early detection of ocular disease, strengthens communication between primary and specialist eye care providers, and enhances patient satisfaction. Evidence from India has also suggested that patients referred following tele-ophthalmology consultation are more likely to complete referral compared with those managed through conventional referral systems.