美瞳軟式隱形眼鏡的使用要更小心,日本和台灣一樣,有近3分之1的女性隱形眼鏡使用者是美瞳鏡片的愛好者。但是,印刷在鏡片上的彩色以及人造的瞳孔在最新的研究中發現會影響到使用者的矯正後視力,特別是視力的品質。例如是夜晚或是光線不佳的環境下,視力的品質就會大幅度的下降。建議愛美的朋友,適當的使用具有美容性質的隱形眼鏡,不要將它當做是一般性的隱形眼鏡來取代使用才好。

The purpose of this study was to investigate the differences of functional visual acuity (FVA) and high order aberrations (HOAs) in relation to tinted and clear hydrogel soft contact lens (SCL) wear.

A prospective comp⋯⋯arative study was performed in 16 eyes of 16 healthy volunteers. Dynamic visual acuity (using a FVA measurement system) and higher-order aberrations (using a wavefront sensor) were compared in subjects wearing two types of soft contact lenses: 1-day Acuvue (Vistakon, Jacksonville, FL) clear and the 1-day Acuvue Define (Vistakon, Jacksonville, FL) tinted lens. The blink rates were recorded during FVA testing. The correlation between the difference of HOAs and differences in FVA values was analyzed.

The mean LogMAR FVA scores with clear and tinted SCLs were 0.07±0.13 and 0.14±0.17 (P<0.05). The mean blink frequencies with clear and tinted SCL wear were 18.4±8.3 and 25.3±4.7blinks/min (P<0.05). Both 3rd-order aberrations and total HOAs showed statistically significant differences between the two types of soft contact lenses for 6mm pupil measurements (P<0.05). A significant positive linear correlation was observed between ΔHOAs and ΔLogMAR FVA for 6mm pupil measurements (R=0.53, P=0.04).

The reserchers concluded that tinted contact lens wear appears to induce a reduction in optical quality. Functional visual acuity measurement is a useful procedure to study the changes of visual performance and quality in tinted contact lens wear.

Watanabe K, Kaido M, Ishida R, Dogru M, Negishi K, Tsubota K. The effect of tinted soft contact lens wear on functional visual acuity and higher-order aberrations. Cont Lens Anterior Eye. 2014 Apr 7. [Epub ahead of print]
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