Study of halo size and contrast sensitivity of myopia by vision monitor

Abstract

AIM: To assess the halo size and contrast sensitivity on different levels of myopia and to analyze their correlation.METHODS: Screening total 156 myopic patients aged 18 to 39 years old included in our hospital from March 2018 to March 2019. There were 49 subjects in high myopia group(SER>-6.00D), 54 in medium myopia group(-3.00DRESULTS: The size of glare halo in high myopia group was 106.27±25.89arc min, and 103.81±31.41arc min in medium myopia group, 102.87±32.24arc min in low myopia group, and there was no significant difference among three groups(F=0.297, P=0.825). There was no significant difference among three groups on contrast sensitivity under any different spatial frequencies(P>0.05). Correlation analysis showed a significant negative relationship between glare halo radius and contrast sensitivity at the c/d of 1.1, 2.2, 3.4, 7.1(rs=-0.302, rs=-0.308, rs=-0.383, rs=-0.257, all PP>0.05).CONCLUSION: Glare halo size had no relationship with SE but mid-frequency contrast sensitivity.

Keywords

• myopia
• glare
• contrast sensitivity
• visual quality