Título:
|
Clinical validation of a fast binocular subjective refraction algorithm; Clinical validation of a fast binocular subjective refraction algorithm
|
Autor/a:
|
García García, Rocío
|
Otros autores:
|
Pujol Ramo, Jaume; Otero Molins, Carles |
Abstract:
|
En col·laboració amb la Universitat Autònoma de Barcelona (UAB), la Universitat de Barcelona (UB) i l’Institut de Ciències Fotòniques (ICFO) |
Abstract:
|
The purpose of this study is to investigate a new algorithm to perform an automated non-cycloplegic refraction in adults. In order to carry on the study fifty healthy subjects were measured twice (test-retest) with the new automated subjective refraction (ASR) method and with the conventional clinician subjective refraction (CSR) procedure. Objective refraction (OR) is also measured with the autorefractor Grand Seiko WAM-5500. The new subjective refraction procedure is mainly based on the root finding bisection algorithm and on the Euclidean distances among power vectors. The algorithm is implemented on a computer that is synchronized with a custom-made motorized phoropter. Main outcome measures: spherical equivalent (M) and Jackson cross-cylinder (J0 and J45). Repeatability is assessed with the within-subject standard deviation (Sw) and agreement is assessed with the limits of agreement. The results showed that the first implementation of the algorithm is a potential novel method of performing non-cycloplegic subjective refraction in adults without clinician support. Although it presents some limitations that warrant further research and it still should be tested in a wider population in terms of age, refraction and different ocular conditions, this method can contribute to improve the access to primary eye care services in developing countries. |
Materia(s):
|
-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica -Algorithms -Eye -- Diseases -refraction -automated -phoropter -subjective. -Algorismes -Ulls -- Malalties i defectes |
Derechos:
|
|
Tipo de documento:
|
Trabajo fin de máster |
Editor:
|
Universitat Politècnica de Catalunya
|
Compartir:
|
|