基于VR的视知觉学习训练对小角度间歇性外斜视的短期疗效观察

Observation of Short-Term Outcomes of Perceptual Learning Based on Virtual Reality in Patients with Small-Angle Intermittent Exotropia

摘要: 目的：基于VR的视知觉学习治疗方法对小角度间歇性外斜视的短期疗效观察。方法：回顾性病例系列研究。收集小角度间歇性外斜视60例，随机分为对照组(A组30例)和训练组(B组30例)；A组仅进行屈光矫正或戴空框眼镜；B组，在屈光矫正或空框眼镜的基础上进行1周1次院内基于VR的视知觉学习训练，随访6个月；待6个月后，A组开始进行1周2次院内基于VR的视知觉学习训练，同时B组停止训练，随访6个月。结果：开始训练6个月后，B组33 cm和5 m斜视度数较6个月前均有明显改善(P < 0.05)；停止训练6个月后，B组33 cm和5 m斜视度数较6个月前稍有回退(P > 0.05)。结论：基于VR的视知觉学习治疗方法能在短期内有效减少小角度间歇性外斜视患者的斜视度数，并能在一定时期内控制患者的眼位回退情况。

Abstract: Objective: To investigate the short-term efficacy of perceptual learning based on VR in small-angle intermittent exotropia. Methods: Retrospective case series study. 60 cases with small-angle IXT were randomly divided into control group (30 cases in group A) and training group (30 cases in group B); Group A only received refractive correction or wore empty frame glasses, and group B received perceptual learning based on VR twice a week and refractive correction or empty frame glasses; After 6 months, group A began to receive perceptual learning based on VR twice a week, while group B stopped training, and followed up for 6 months. Results: After 6 months of training, the 33 cm and 5 m strabismus degrees in group B were significantly improved compared with those before 6 months (P< 0.05); after 6 months of stopping training, the 33 cm and 5 m strabismus degree in group B slightly retreated compared with that before 6 months (P> 0.05). Conclusion: The perceptual learning therapy based on VR can effectively reduce the strabismus degree of patients with small-angle IXT in a short time, and can control the eye position regression of patients in a certain period of time.