Babu Logesh, Kumaran Samuel Livingstone, Gupta Deepak
Department of Optometry, UIAHS Chandigarh University, Punjab, India.
Department of Optometry, Sri Ramachandra Institute of Higher Education and Research (SRIHER), Tamil Nadu, India.
Niger Med J. 2023 Jul 2;64(3):365-372. eCollection 2023 May-Jun.
Uncorrected refractive error is one of the major causes of blindness. Self-refraction methods are currently practiced to correct refractive error. Self-adjustable eyeglasses are available easily in the present online buying era. Hence this study aimed to compare the visual and refractive outcomes between Self-refraction (SR) eyeglasses and Cycloplegic subjective Refraction (CSR).
This observational cross-sectional study included 59 participants (21 males and 38 females) within the age of 18 to 30yearsand refractive error between +3.00D to -6.00D took part in this study. Subjects with a previous history of non-strabismic binocular vision anomaly, astigmatic error, pathological eye problems, ocular surgery or trauma were excluded from the study. The subjects were allowed to estimate their refractive error with DialVision eyeglasses followed by CSR, which was performed by a single examiner. The visual and refractive outcomes of SR and CSR were collected and analyzed.
The study participants mean age was 22(2) years.The comparison of visual acuity and duochrome between SR and CSR using Paired T test showed a statistically significant difference (<0.01). Visual acuity attained from SR resulted in a mean acuity of 0.14(0.05) logMAR compared to CSR 0.002(0.007) logMAR. Duochrome test identified 92% of participants being under corrected with SR. No statistically significant difference was observed in contrast sensitivity and cover test (>0.01).
Visual acuity with SR was acceptable but wasn't better than CSR. Appreciable under correction of refractive error with SR raises concern. Encouraging a patient to correct their own refractive error without a comprehensive eye examination can lead to various adverse effects. Even though SR might bring a brief relief towards the burden of uncorrected refractive error, dispensing spectacle based on standard refraction procedure is imperative for good visual performance.
未矫正的屈光不正失明的主要原因之一。目前采用自我验光法来矫正屈光不正。在当下的网购时代，可轻松获得可自我调节的眼镜。因此，本研究旨在比较自我验光（SR）眼镜与睫状肌麻痹主观验光（CSR）的视力和屈光结果。
本观察性横断面研究纳入了59名年龄在18至30岁之间、屈光不正度数在+3.00D至-6.00D之间的参与者（21名男性和38名女性）。有非斜视性双眼视觉异常、散光、病理性眼部问题、眼部手术或外伤史的受试者被排除在研究之外。受试者先用DialVision眼镜估计其屈光不正度数，然后由一名检查者进行CSR。收集并分析SR和CSR的视力和屈光结果。
研究参与者的平均年龄为22（2）岁。使用配对t检验比较SR和CSR之间的视力和双色试验，结果显示存在统计学显著差异（<0.01）。SR获得的视力平均对数最小分辨角为0.14（0.05），而CSR为0.002（0.007）。双色试验发现92%的参与者使用SR时矫正不足。在对比敏感度和遮盖试验中未观察到统计学显著差异（>0.01）。
SR的视力可以接受，但不比CSR好。SR对屈光不正的明显矫正不足令人担忧。鼓励患者在没有全面眼部检查的情况下自行矫正屈光不正可能会导致各种不良反应。尽管SR可能会暂时减轻未矫正屈光不正的负担，但基于标准验光程序配镜对于良好的视觉表现至关重要。
