Professional Ski Instructors of America (PSIA) Level 3 Practice Exam

Cataracts produce clouding of the lens inside the eye, which prevents a clear image from forming on the retina. Because the lens normally focuses light sharply, when it becomes opaque light is scattered and vision becomes blurred or hazy. People often notice glare, halos around lights, reduced contrast, and colors that look faded. Night driving can be especially challenging due to the reduced clarity, but the defining sign is the cloudy lens itself rather than a specific field deficit like peripheral vision loss. While monocular double vision can occur in some cases, it’s not the primary symptom; the main concept is the lens clouding that blurs vision.