Study of the correlation between contrast sensitivity and binocular vision in high myopia patients
10.13389/j.cnki.rao.2024.0165
- VernacularTitle:高度近视患者对比敏感度与双眼视功能的相关性分析
- Author:
Yanglin JIANG
1
;
Wenzheng DU
;
Hui SONG
;
Lihua LI
Author Information
1. 300020 天津市,天津市眼科医院、天津市眼科与视觉科学重点实验室、南开大学视光科学研究院、天津市眼科医院视光中心
- Keywords:
high myopia;
contrast sensitivity;
accommodation;
vergence
- From:
Recent Advances in Ophthalmology
2024;44(11):872-877
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the correlation between contrast sensitivity and binocular visual function in indi-viduals with high myopia,aiming to understand how binocular visual function impacts contrast sensitivity in this popula-tion.Methods In this cross-sectional study,a total of 33 patients(66 eyes)with high myopia attending the Optometric Center of Tianjin Eye Hospital from March to December 2020 were included.They were measured for oculomotor parame-ters as well as binocular contrast sensitivity in photopic and scotopic conditions.According to the type of functional indica-tors to which the oculomotor parameters belong,they were divided into two groups:accommodation and vergence.The oculomotor parameters of accommodation include accommodative amplitude(AMP),monocular accommodative facility(MAF)and binocular accommodative facility(BAF);the oculomotor parameters of vergence include distance lateral pho-ria(DLP),near lateral phoria(NLP),positive fusional vergence(PFV),negative fusional vergence(NFV),and vergence facility(VF),among them,PFV includes the near and distance PFV breaking points and recovery points,and NFV includes the near and distance NFV breaking points and recovery points.Pearson bivariate correlation analysis was used to analyze the bivariate correlations between binocular contrast sensitivity and the oculomotor parameters of accommodation and ver-gence.In addition,canonical correlation analysis was used to analyze the associations between binocular contrast sensitivi-ty and accommodation and vergence indicators in patients with high myopia.Results The spherical equivalent refraction of the participants was(-9.51±2.71)D in the left eye and(-10.00±2.88)D in the right eye.The bivariate correlation analysis showed that among the oculomotor parameters of accommodation,the AMP of the left eye was negatively correla-ted with the contrast sensitivity at 18 c·d-1 under scotopic conditions(r=-0.406,P=0.019);among the oculomotor pa-rameters of vergence,the near PFV breaking point was positively correlated with the contrast sensitivity at 1.5 c·d-1(r=0.458)and3.0 c·d-1(r=0.441)under scotopic conditions(both P＜0.05),the near PFV recovery point was positively correlated with the contrast sensitivity at 3.0 c·d-1(r=0.351)and 6.0 c·d-1(r=0.396)under photopic conditions(both P＜0.05)and positively correlated with contrast sensitivity at 1.5 c·d-1(r=0.449),3.0 c·d-1(r=0.537)and 12.0 c·d-1(r=0.375)under scotopic conditions(all P＜0.05),and VF was positively correlated with contrast sensitivity at 1.5 c·d-1(r=0.358)under photopic conditions and 3.0 c·d-1(r=0.458)under scotopic conditions(both P＜0.05).Except for the above indicators,other oculomotor parameters of accommodation and vergence were not correlated with contrast sensitivity(all P＞0.05).Canonical correlation analysis showed that only the oculomotor parameters of vergence were correlated with the first pair of canonical correlation coefficients of contrast sensitivity under scotopic conditions(P=0.008)and the canonical correlation coefficient was 0.912.The oculomotor parameters of convergence U1 were mainly de-termined by NLP,near NFV recovery point,near PFV breaking point,and near PFV recovery point.Contrast sensitivity V,under scotopic conditions was mainly determined by contrast sensitivity at 1.5 c·d-1 and 6.0 c·d-1under scotopic condi-tions.The typical structural analysis showed that there was a strong positive correlation of U1 with near PFV breaking point and contrast sensitivity at 1.5 c·d-1 under scotopic conditions;there was a strong positive correlation of V1 with near PFV breaking point and contrast sensitivity at 1.5 c·d-1 under scotopic conditions.Conclusion There is an association be-tween vergence and contrast sensitivity under scotopic conditions among high myopia patients.Improving binocular visual function may enhance contrast sensitivity and overall visual quality in high myopia patients.
