Instrument for fast whole-field peripheral refraction in the human eye.

Fernandez, Enrique J; Sager, Santiago; Lin, Zhenghua; Hao, Jiangdong; Roca, Javier; Prieto, Pedro M; Yang, Zhikuang; Lan, Weizhong; Artal, Pablo

Fernandez, Enrique J; Sager, Santiago; Lin, Zhenghua; Hao, Jiangdong; Roca, Javier; Prieto, Pedro M; Yang, Zhikuang; Lan, Weizhong; Artal, Pablo.

Afiliación

Fernandez EJ; Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo (Ed. 34), 30010 Murcia, Spain.
Sager S; Voptica S.L., Parque Científico de Murcia, Ctra. de Madrid 388, Complejo de Espinardo - Edificio T, 30100 Murcia, Spain.
Lin Z; Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo (Ed. 34), 30010 Murcia, Spain.
Hao J; Voptica S.L., Parque Científico de Murcia, Ctra. de Madrid 388, Complejo de Espinardo - Edificio T, 30100 Murcia, Spain.
Roca J; Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo (Ed. 34), 30010 Murcia, Spain.
Prieto PM; Aier School of Ophthalmology, Central South University, 410000 Changsha, China.
Yang Z; Aier School of Ophthalmology, Central South University, 410000 Changsha, China.
Lan W; Aier School of Optometry and Vision Science, Hubei University of Science and Technology, 437100 Xianning, China.
Artal P; Voptica S.L., Parque Científico de Murcia, Ctra. de Madrid 388, Complejo de Espinardo - Edificio T, 30100 Murcia, Spain.

Biomed Opt Express ; 13(5): 2947-2959, 2022 May 01.

Article en En | MEDLINE | ID: mdl-35774321

RESUMEN

An instrument for fast and objective measurement of the peripheral refraction in the human eye is presented. The apparatus permits the automatic estimation of both defocus and astigmatism at any retinal eccentricity by scanning a near infrared beam. The design includes a Hartmann-Shack wavefront sensor and a steering mirror, which operate in combination with a compounded eyepiece for wide field operation. The basic scanning protocol allows the estimation of refraction in a circular retinal patch of 50 deg diameter (±25 from central fixation) in 3 sec. Combined with additional fixation points, wider retinal fields can be sampled to achieve a whole field. The instrument underwent calibration and testing, and its performance for real eyes was assessed in 11 subjects of varying age and refraction. The results show high repeatability and precision. The instrument provides a new tool for the investigation of peripheral optics in the human eye.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Biomed Opt Express Año: 2022 Tipo del documento: Article País de afiliación: España Pais de publicación: Estados Unidos

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