Portable Smartphone Adapter for Imaging the Anterior and Posterior Segments of the Eye

Abstract

Eye-related complaints are increasingly prevalent in emergency departments, where access to ophthalmologists is often limited. This gap can delay diagnosis and treatment, particularly for conditions requiring timely evaluation. A rapid, accessible method for capturing and sharing diagnostic-quality eye images would improve triage efficiency and support remote clinical decision-making in both hospital and resource-limited settings.

TeleVision aims to address this need by developing a smartphone-compatible ophthalmic imaging attachment capable of capturing both anterior and posterior segment images of the eye. The system integrates with devices such as the iPhone 16 Pro and utilizes a compact optical design consisting of a negative singlet lens beamsplitter, and mirror-based coaxial illumination pathway. Anterior imaging leverages the macro capabilities of modern phone models, while posterior imaging is achieved through the optical attachment.

Prototype testing demonstrated successful illumination delivery and system integration, with clear imaging achieved at close working distances. However, the inclusion of the negative lens resulted in reduced image resolution and limited field of view at clinically relevant distances, indicating the need for further optical optimization. Durability testing confirmed structural robustness of the 3D-printed housing after repeated drop tests, though optical components decrease this robustness.

This device has the potential to expand access to ophthalmic imaging by enabling minimally trained users to capture and transmit diagnostic images. Following continued refinement, TeleVision could support tele-ophthalmology workflows, reduce time to specialist evaluation, and improve patient outcomes in understaffed clinical environments.

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