Costco Optical Department Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Transitions lenses are designed to respond to UV light by changing their tint depending on the light conditions. When a member goes outside, the UV rays from the sun prompt the lenses to darken, providing protection against bright sunlight and glare. This characteristic of becoming dark is particularly beneficial for individuals who experience discomfort in bright conditions, as it allows for a more comfortable visual experience by reducing the intensity of light entering the eyes.

The effectiveness of this transition is due to the special photochromic technology integrated into the lenses, which enables them to automatically adjust their tint based on the surrounding light environment. This makes them an excellent choice for outdoor activities, as they offer both the convenience of regular glasses indoors and the protective function of sunglasses outdoors.