Clear/non-tinted contact lenses transmit ______% of light.

• A. 92-98%
• B. 60-70%
• C. 10-20%
• D. 100%

Answer: (A)

The key idea is how transparent contact lens materials are to visible light. Clear, non-tinted lenses are designed to let most of the light that reaches the eye pass through with minimal loss. For typical lens materials (hydrogel and silicone hydrogel), the visible-light transmittance is high—usually in the high 90s, about 92 to 98 percent. This means only a small fraction is absorbed or scattered as it passes through the lens.

Light loss comes from a few sources, including a tiny amount absorbed by the material and some reflection at the lens surfaces, so achieving 100% transmission isn’t realistic. That’s why the other options—significantly lower transmissions like 60–70% or 10–20%—would create noticeable dimming and aren’t characteristic of clear lenses.