What is the term for a condition where the crystalline lens becomes cloudy or yellow, resulting in blurred vision?

Cataract is the term for a condition in which the crystalline lens of the eye becomes cloudy or yellow. This opacification of the lens can significantly impair vision by obstructing and scattering light that enters the eye. Patients often experience blurred vision, difficulty seeing at night, and an increase in glare from lights, which can affect their overall quality of life and visual performance.

Cataracts are commonly associated with aging, but they can also be caused by various factors, including prolonged exposure to UV light, diabetes, certain medications, and eye injuries. The treatment for cataracts typically involves surgical removal of the cloudy lens and replacement with an artificial intraocular lens, leading to significant improvements in vision for most patients.

The other conditions listed are distinct. Presbyopia refers to the age-related loss of near vision due to a decrease in the lens's ability to change shape for focusing. Amblyopia, commonly known as lazy eye, is a developmental issue where one eye fails to achieve normal visual acuity, often due to strabismus or other eye conditions. Strabismus is characterized by improper alignment of the eyes, which can lead to double vision or poor depth perception. Each of these conditions has its own specific causes, symptoms, and management