Noncycloplegic autorefraction tied to more myopic refractive error than cycloplegic autorefraction in young adults: Study

Written By : Dr. Shravani Dali |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2024-08-23T20:00:35+05:30 | Updated On 24 Aug 2024 11:48 AM IST

Noncycloplegic autorefraction tied to more myopic refractive error than cycloplegic autorefraction in young adults suggests a study published in the Optometry and Vision Science.

This study explores the difference between cycloplegic and noncycloplegic refraction in young adult myopes. From the available literature, it is unclear whether cycloplegia is necessary when refracting young adults. This study investigates the agreement between noncycloplegic autorefraction and cycloplegic autorefraction and investigates factors affecting the agreement between the two methods. In total, 125 myopes with ages ranging between 18 and 26 years were included from Australia and Vietnam. Each participant underwent noncycloplegic autorefraction and cycloplegic autorefraction. Cycloplegia was induced with 1% ophthalmic tropicamide. RESULTS : The mean spherical equivalent difference (95% confidence interval) between noncycloplegic autorefraction and cycloplegic autorefraction was −0.20 D (−0.25 to −0.14 D; t124 = −7.18, p<0.0001).

A mean difference of >0.25 D was seen in 46.8% of eyes. The lower and upper limits of agreement were −0.80 and 0.41 D, respectively. With univariate analysis, factors including age, degree of refractive error, accommodation amplitude, and distance phorias showed no impact on the average difference between cycloplegic autorefraction and noncycloplegic autorefraction. Yet, eyes with near exophoria (F2,120 = 6.63, p=0.0019) and Caucasian eyes (F3,121 = 2.85, p=0.040) exhibited the smallest paired differences. However, in the multivariate analysis, only near exophoria was associated with a lower mean difference. A significantly smaller proportion (34.9%) of eyes with near exophoria had a paired difference of −0.25 D or more compared with esophoria (50%) and orthophoria (65%; χ2 = 6.6, p=0.038). Noncycloplegic autorefraction results in more myopic refractive error than cycloplegic autorefraction in young adults.

Reference:

Khan, Hashim Ali OD, FAAO1,2∗; Tran, Huy MD, PhD2,3,4; Naduvilath, Thomas John PhD1,2; Tahhan, Nina BOptom, PhD1,2; Ha, Thao MD4; Sankaridurg, Padmaja BOptom, PhD2. Comparison between cycloplegic and noncycloplegic refraction in young adult myopes. Optometry and Vision Science 101(7):p 470-476, July 2024. | DOI: 10.1097/OPX.0000000000002169

Noncycloplegicautorefractionmoremyopicrefractiveerrorcycloplegicyoung adultsStudy

Source : Optometry and Vision Science

Dr. Shravani Dali

Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.

Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751