Cataracts form when protein builds up in the lens, making it cloudy. Common in people over 60, usually forming slowly. Symptoms include cloudy vision, glare, and difficulty seeing at night
Crystalline lens is transparent structure behind iris focusing light on retina. Lens provides approximately one-third of eye's focusing power. Lens changes shape through accommodation controlled by ciliary body. Lens is made of 60% protein, highest concentration in body
LASIK corrects vision problems by reshaping cornea using excimer laser. Surgeon creates corneal flap and lifts it to access underlying tissue. Laser removes collagen to reshape cornea for better light focusing. Procedure typically takes less than 30 minutes per eye
Strabismus is a vision condition where eyes are misaligned and don't work together. Causes include muscle imbalances, nerve problems, genetics and health conditions. Can be caused by cataracts, diabetes, eye injuries or tumors
ESCRS calculator helps ophthalmologists select appropriate intraocular lenses. Tool considers corneal power, axial length, and desired postoperative refraction. Uses advanced algorithms for more accurate and predictable outcomes
Refractive error affects half of US population, including hyperopia and myopia. First pIOLs implanted in 1953 by Dr. Strampelli. Modern lenses include iris-claw and posterior chamber designs