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Masatsugu Kanazawa, Hiroshi Uozato; Influence of Absorptive Lenses on Contrast Sensitivity under Photopic Vision with Glare. Invest. Ophthalmol. Vis. Sci. 2012;53(14):3068.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the influence of absorptive lenses on contrast sensitivity under photopic vision with glare.
The subjects were 15 healthy volunteers (30 eyes) and all subjects were a visual acuity of 20/20 or better. Contrast sensitivity (CS) under photopic vision(background brightness: 100 cd/m2) with glare (brightness: 100,000 cd/m2) was measured with a contrast test device, CGT-2000 (TAKAGI SEIKO, CO., LTD. JAPAN). Binocular contrast sensitivity without absorptive lenses was control and was compared with absorptive lenses. Absorptive lenses were RETINEX (HOYA, CO., JAPAN) with 5 colors: Orange - Brown (OB; luminous transmittance(LT), 12%), Orange (OR; LT, 49%), Red (RE; LT, 33%), Yellow (YE; LT, 77%), Yellow - Brown (YB; LT, 29%).
Compared with control, CS decreased with OB at high spatial frequency (ANOVA, Scheffé, p < 0.05). In the other conditions, CS did not significantly change. CS with YE and OR were approximately similar to control value. When OB was compared with YE and OR, CS with OB decreased more than that of YE and OR at high spatial frequency (ANOVA, Scheffé, p < 0.05).
The absorptive lenses whose luminous transmittance is high were hardly affected on CS under photopic vision with glare. These results suggest that photopic vision with glare did not influenced with YE and OR lenses.
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