Relative peripheral refraction, higher-order aberrations, and visual quality with single-vision, progressive-multifocal, multifocal, and dual-focus soft contact lenses

Yeh, Mike Chih-Wei; Hsiao, John Ching-Jen; Tsang, Dorcas; Spors, Frank; Cheng, Chun-Wen

doi:10.1016/j.ijleo.2022.170401

Cited by 1 publication

(1 citation statement)

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“…This limitation contrasts with some other studies where higher eccentricities were explored [49]. Furthermore, it is considered that 30 degrees is a good reference value to compare with other studies [35,50] about myopia control with contact lenses. Second, as soft contact lens shape can be modified during wearing use by dehydration [51], it can be argued that our RPR is only a snapshot of the peripheral refraction (1 h wearing use) which is being experienced by the users throughout the day.…”

Section: Discussionmentioning

confidence: 91%

Peripheral Refraction of Two Myopia Control Contact Lens Models in a Young Myopic Population

Marcellán

Ávila

Ares

et al. 2023

IJERPH

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Peripheral refraction can lead to the development of myopia. The aim of this study was to compare relative peripheral refraction (RPR) in the same cohort of uncorrected (WCL) and corrected eyes with two different soft contact lenses (CL) designed for myopia control, and to analyze RPR depending on the patient’s refraction. A total of 228 myopic eyes (114 healthy adult subjects) (−0.25 D to −10.00 D) were included. Open-field autorefraction was used to measure on- and off- axis refractions when uncorrected and corrected with the two CLs (dual focus (DF) and extended depth of focus (EDOF)). The RPR was measured every 10° out to 30° in a temporal-nasal orientation and analyzed as a component of the power vector (M). The average RPR for all subjects was hyperopic when WCL and when corrected with EDOF CL design, but changed to a myopic RPR when corrected with DF design. Significant differences were found between RPR curves with both CLs in all the eccentricities (Bonferroni correction p < 0.008, except 10°N). An incremental relationship between relative peripheral refraction at 30 degrees and myopia level was found. It is concluded that the two CLs work differently at the periphery in order to achieve myopia control.

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