How does light interacts with the sunglasses to help the doctor's patients?

Sunglasses help protect patients' eyes by filtering out harmful ultraviolet (UV) rays and reducing glare from bright light. This interaction occurs through special coatings or tints on the lenses that absorb or reflect specific wavelengths of light. By minimizing exposure to intense sunlight, sunglasses can alleviate eye strain, enhance comfort, and reduce the risk of long-term eye damage, thereby promoting overall eye health for patients.