Ocular dominance switches after small incision lenticule extraction and its influencing factors
10.3760/cma.j.cn115989-20190306-00101
- VernacularTitle:飞秒激光小切口角膜透镜取出术前后主导眼变化及其影响因素
- Author:
Haohan ZOU
1
;
Yan WANG
;
Tong CUI
;
Lin ZHANG
;
Jiamei ZHANG
;
Lulu XU
Author Information
1. 天津医科大学眼科临床学院 天津市眼科医院 天津市眼科学与视觉科学重点实验室，天津 300020
- Keywords:
Ocular dominance;
Small incision lenticule extraction;
Myopia;
Spherical equivalent;
Anisometropia
- From:
Chinese Journal of Experimental Ophthalmology
2022;40(11):1085-1089
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the changes, distribution and influencing factors of ocular dominance after small incision lenticule extraction (SMILE).Methods:A retrospective observational case series study was conducted.One hundred and twelve patients (224 eyes) with an average age of 25.1±5.4 years who underwent SMILE surgery at Tianjin Eye Hospital from November 2017 to February 2018 were enrolled.There were 42 male and 70 female patients.The dominant eye was determined using the hole-in-the-card test before and after the surgery.Subjective and objective refraction and uncorrected visual acuity examination were performed before operation, and 1 day, 1 week, 1 month and 3 months after operation.The subjects were divided into switch group and non-switch group based on whether the dominant eye changed after surgery.Binary logistic regression was used to analyze the main influencing factors of dominant eye switches.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Tianjin Eye Hospital (No.201905). Written informed consent was obtained from each patient before any medical examination.Results:There were 18 patients (16.1%) in the switch group including 7 males (38.9%) and 11 females (61.1%), and 94 patients (83.9%) in the non-switch group including 35 males (37.2%) and 59 females (62.8%). No statistically significant difference was found in sex between the two groups ( χ2=0.02, P=0.89). At 1 month and 3 months after the surgery, there was a statistically significant difference in the cylindrical power between the dominant and non-dominant eye ( t=2.31, 1.95; both at P<0.05). Binary logistic regression equation showed that spherical equivalent[odds ratio ( OR)=0.47, 95%confidence interval ( CI): 0.35-0.66]and refractive error difference ( OR=3.04, 95% CI: 2.12-4.36) were significantly related to the eye dominance switches. Conclusions:There were 16.1% of patients having eye dominance switches after SMILE.The dominant eye transfomation is associated with higher spherical equivalent and anisometropia difference before surgery.
