CATARACT
Cataract is the development of haziness in the vision either partial or complete which gradually increases over time. Cataract affects the lens of the eye and prevents light from penetrating hence obstructing vision. Causes: Aging Diabetes and hypertension of long duration Ultraviolet light e.g.: pilots are more prone to the disease as they fly at high altitudes continuously Infra-red radiation e.g: glassblowers are exposed to infra-red radiation by virtue of their occupation Trauma to the eye Symptoms: Loss of clear vision and haloes around street lights at [...]