title: Low-cost adaptive astigmatism compensator for improvement of eye fundus camera.
abstract: In this work we show a conceptually simple and cheap means by which to improve retinal image quality in fundus cameras. We will explain how to build a low-cost variable astigmatism-correcting device with a pair of identical commercial ophthalmic lenses. We have developed and tested a low order aberration compensation device capable of correcting astigmatism prescriptions up to -8.00 D with no significant addition of higher order aberrations. A theoretical description of the device, calibration, and improvement in retinal images without employing any image restoration technique will be shown.
authors: Departamento de Física Aplicada, (área de Óptica), Facultade de Física (Campus Vida), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain. justo.arines@usc.es
authors: Justo
authors: J
authors: Arines
authors: Eva
authors: E
authors: Acosta
mesh_terms: D001251:Astigmatism / Q000473:pathology; D005123:Eye / Q000033:anatomy & histology*; D006801:Humans; D007909:Lenses / Q000191:economics; D055620:Optical Phenomena; D012160:Retina / Q000033:anatomy & histology; D042261:Retinoscopes / Q000191:economics