ISSN: 2476-2075

Optometry: Open Access
Open Access

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
  • Review Article   
  • Optom open access 2016, Vol 1(3): 121
  • DOI: 10.4172/2476-2075.1000121

Analysis on Visual Imaging Quality Affected by Human Eye's Higher Order Aberration Measurement via Off-axis Wavefront

Xu Ancheng* and Rao Feng
Changzhou Institute of Technology, , Changzhou, Jiangsu 213002, China
*Corresponding Author : Xu Ancheng, Changzhou Institute of Technology, No.666 Liao He Road, Chang Zhou City, Jiang Su Province, 213002, China, Tel: +13921034125, Email: jackyxac@163.com

Received Date: Oct 25, 2016 / Accepted Date: Dec 20, 2016 / Published Date: Dec 27, 2016

Abstract

This paper mainly discusses the system design and establishes the experimental system which conducts realtime off-axis measurement of the human eye’s aberration. The target is installed in the optical path of human eye objective measuring system. When observing the target, the human eye adjusts itself to a relaxing state so as to conduct measurement. The target being observed conducts movement vertical to optical axis within its field range, and then realized the off-axis aberration measurement. Research data show that only when normal incidence of the light occurs can changes the human eye’s aberration which caused by measuring errors be minimized. Data from all the objects reveal that second order aberration has the largest proportion among all the aberrations and does not show significant change within the increased off-axis angle in the vision field. Third order aberration increases with the increase of off-axis angle in the vision field. Fourth order aberration shows no obvious increase except the first item. High order aberrations for fifth order and above do not change much with the increase in off-axis angle in the field range. Meanwhile, the proportion of fifth order or above aberrations is the smallest among all the objects’ aberrations. The study results demonstrate that it is the aberrations of the former four orders that have a significant affect on human eye. With regard to off-axis aberration, third order and fourth order affect human eye imaging quality significantly. On the contrary, the high order aberrations of fifth order and above have a minor influence on human eye imaging quality.

Keywords: Hartman shack sensor; Off-axis wavefront measurement; High-order Aberration; Visual

Citation: Ancheng X, Feng R (2016) Analysis on Visual Imaging Quality Affected by Human Eye’s Higher Order Aberration Measurement via Off-axis Wavefront. Optom Open Access 1: 121. Doi: 10.4172/2476-2075.1000121

Copyright: © 2016 Ancheng X, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Top