用于人眼快速全视野周边屈光测量的仪器。
Instrument for fast whole-field peripheral refraction in the human eye.
作者信息
Fernandez Enrique J, Sager Santiago, Lin Zhenghua, Hao Jiangdong, Roca Javier, Prieto Pedro M, Yang Zhikuang, Lan Weizhong, Artal Pablo
机构信息
Laboratorio de Óptica, Centro de Investigación en Óptica y Nanofísica (CiOyN), Universidad de Murcia, Campus de Espinardo (Ed. 34), 30010 Murcia, Spain.
Voptica S.L., Parque Científico de Murcia, Ctra. de Madrid 388, Complejo de Espinardo - Edificio T, 30100 Murcia, Spain.
出版信息
Biomed Opt Express. 2022 Apr 21;13(5):2947-2959. doi: 10.1364/BOE.457686. eCollection 2022 May 1.
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.
本文介绍了一种用于快速、客观测量人眼周边屈光的仪器。该设备通过扫描近红外光束，能够自动估计任何视网膜偏心度下的离焦和散光。其设计包括一个哈特曼-夏克波前传感器和一个转向镜，它们与一个复合目镜配合工作，以实现宽视场操作。基本扫描协议允许在3秒内估计直径为50度（相对于中央注视点±25度）的圆形视网膜区域的屈光情况。结合额外的注视点，可以对更宽的视网膜区域进行采样以实现全视野。该仪器经过了校准和测试，并在11名年龄和屈光状态各异的受试者中评估了其对真实眼睛的性能。结果显示出高重复性和高精度。该仪器为研究人眼周边光学提供了一种新工具。
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