Efficacy of Optimised Minus Lens in the Treatment of Intermittent Exotropia: A Randomised Clinical Trial

Children's Health Queensland0 个研究点目标入组 140 人开始时间: 2019年3月11日最近更新: 2019年7月15日

适应症

试验速览

暂无简介。

•Age between 4 and 15 years
•-Patient with IXT measuring >10pd of distance IXT and mean distance control score of 2 points or worse
•-Best corrected visual acuity 6/9 or better in each eye
•-Near stereopsis of 100” arc or better
•-No ocular pathology that might affect ocular motility and visual acuity
•-Parents willing to and able to provide signed informed consent

•-Constant strabismus/exotropia
•-IXT of convergence insufficiency type - near deviation not exceeding the distance deviation by >10pd
•-IXT treated with minus lens, prism or surgery within the last 6 months. Patients receiving alternate pathing will be eligible for the study.
•-Any previous strabismus and/or intraocular surgery
•-Interocular difference of visual acuity by 2 or more lines
•-Cycloplegic spherical equivalent refraction exceeding -6.0D myopia or +2.0D hyperopia on cycloplegic refraction. Ametropic criteria are selected with the assumptions that: myopia over 6.0D for the target age group is likely to be pathological in nature; and hyperopia over 2D is likely to be symptomatic manifest hyperopia which normally should be fully corrected.
•-Inability to determine accurate visual acuity and strabismus assessment due to poor cooperation and/or intellectual impairment
•-Conditions potentially affecting vergence and accommodation
•-Developmental delay or general debility interfering study purpose

发起方

Children's Health Queensland