|
Purpose : We aim to make a low cost optical system including the camera to be used to convert a regular indirect ophthalmoscope (I.O) into a video I.O.
Methods : We have made a prototype of a low cost video indirect ophthalmoscope (I.O.) using an I.O. , telephoto lens and a small spy camera (Mini Wireless HD 1080P SPY Hidden Camera Wifi Module video recorder) which can either be mounted on a uni ocular eye piece of the I.O. or using a beam splitter as well . We also used a butter paper over the light source to create a diffuse illumination
Results : We obtained good resolution of images using this technique of the posterior pole as well as the peripheral retina and the data can be directly viewed via an application using the smartphone which can be transferred via wifi . The device cost is Rs 4000 . We can record high definition videos or capture still images using this technique.Other applications for such retinal imaging would be for training purpose in OPD or in operating rooms in which medical students may view the surgery on a screen through the perspective of the surgeon and an additional advantage is the ability to record audio narration while examining patients
Conclusion : This device can be used for documentation purpose , tele ophthalmology , patient and physician education purpose. It provides a low cost Alternative to the traditional video indirect Ophthalmoscope .
|