Abstract
Purpose:To compare ultraviolet (UV) ray transmission in four UV-blocking soft contact lenses with Z80.20 standards set by the American National Standards Institute (ANSI).Methods:Four soft contact lenses including Acuvue Oasys (Johnson & Johnson, Ireland), Acuvue 2 (Johnson & Johnson, Ireland), Zeiss CONTACT Day 30 (Zeiss, Germany), and Sauflon 55 UV (Sauflon, UK) were evaluated for UV transmission. One-way ANOVA testing was performed to compare mean values of UVA and UVB transmission for the contact lenses.Results:Acuvue Oasys, Acuvue 2, Zeiss CONTACT Day 30 and Sauflon 55 UV showed UV-B transmittance values of 0.24%, 1.46%, 10.37%, and 2.52%, respectively. Corresponding values for UV-A transmittance were 20.81%, 33.49%, 44.03% and 42.53%, respectively. One-way ANOVA showed a statistically significant difference among the tested contact lenses in terms of UV-B (P < 0.001) and UV-A (P < 0.001) transmission.Conclusion:Acuvue Oasys met the ANSI criteria for UV transmission and may thus be a good choice for eye and vision care specialists and contact lens wearers seeking UV protection.
Highlights
Protection against solar ultraviolet (UV) radiation is an important health concern.[1]
Acuvue Oasys showed the lowest transmittance of UV‐B (0.24%) while Zeiss CONTACT had the highest transmittance (10.37%)
UVB and UVA transmittance values of four different UV‐blocking soft contact lenses were compared to American National Standards Institute (ANSI) standards for UV transmittance of Class 2 UV‐blocking contact lenses
Summary
Protection against solar ultraviolet (UV) radiation is an important health concern.[1] UV radiation is part of sunlight spectrum and covers a range of wavelengths from 100 to about 400 nm which is broken down into three regions: UV‐C (200‐290 nm), UV‐B (290‐315 nm), and UV‐A (315‐400 nm). Quick Response Code: Website: www.jovr.org absorbed by the ozone layer in the upper atmosphere and do not reach the surface of the earth.[2]. Exposure to UV radiation may lead to a spectrum of eye diseases.[3,4,5,6] The term Ophthalmoheliosis is used to describe any eye disorder caused by, or related to, sunlight exposure.[7] Several studies have demonstrated abnormalities in the eyelids, cornea, conjunctiva and iris after UV‐B exposure[8] and suggested a correlation between UV‐B exposure, and cataracts and age‐related macular degeneration.[6,9,10,11,12]
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