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Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
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[Comparison of contrast sensitivity and wavefront aberrations with myopic]
1Department of Ophthalmology, The Second Affilited Hospital of Chongqing Medical University, Chongqing 400010, China.
[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology
|October 23, 2018
Summary
Higher-order aberrations, particularly spherical aberrations, significantly impact visual quality in myopia. Increased aberrations correlate with reduced contrast sensitivity, while vertical coma shows a positive association with visual quality.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Myopia is a prevalent refractive error affecting visual acuity.
- Understanding the relationship between visual function and optical quality is crucial for managing myopia.
- Wavefront aberrations and contrast sensitivity are key indicators of visual performance.
Purpose of the Study:
- To analyze the correlation between visual acuity, wavefront aberrations, and contrast sensitivity in myopic eyes.
- To investigate the influence of higher-order aberrations on visual quality in myopia.
- To determine the specific impact of spherical aberrations and vertical coma on contrast sensitivity.
Main Methods:
- Retrospective study of 112 myopic patients (209 eyes).
- Correlation analysis using multivariate stepwise regression.
- Assessment of visual acuity (BCVA), wavefront aberrations (higher-order, corneal), and contrast sensitivity (CS) at 4 spatial frequencies under varying light conditions.
Main Results:
- Higher best corrected visual acuity (BCVA) correlated with better visual quality.
- Spherical aberrations were significantly higher in the low contrast sensitivity group and negatively correlated with CS.
- Vertical coma showed a positive correlation with contrast sensitivity (CS).
Conclusions:
- Higher-order aberrations, especially spherical aberrations, are primary determinants of visual quality differences in myopia.
- Total aberrations and spherical aberrations negatively impact visual quality.
- Vertical coma positively influences visual quality in myopic eyes.
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