What are the major categories of cataract causes?

What are the major categories of cataract causes?

• A. Bacterial, viral, fungal, parasitic
• B. Anatomic, functional, biochemical, genetic
• C. Primary, secondary, tertiary, quaternary
• D. Heritable, metabolic, traumatic, toxic, nutritional, and environmental

Answer: (D)

Cataracts arise from a range of underlying causes, and the best way to organize them is by what drives the lens to become opaque. The major categories are heritable or genetic factors, metabolic conditions that affect lens chemistry, traumatic injury to the eye, toxic exposures or medications, nutritional deficiencies, and environmental factors such as UV exposure. Heritable cataracts are congenital or inherited through genetic mutations. Metabolic causes include systemic diseases like diabetes or inherited metabolic disorders that alter lens metabolism. Traumatic cataracts result from direct injury to the lens or its capsule. Toxic cataracts come from drugs or toxins that damage the lens, while nutritional deficiencies can contribute to lens opacity and environmental exposure to UV light or radiation can increase risk. This broad etiologic framework covers the main ways cataracts develop beyond infection, purely anatomical classifications, or postoperative stages, which don’t describe the causes driving lens clouding.

Cataracts arise from a range of underlying causes, and the best way to organize them is by what drives the lens to become opaque. The major categories are heritable or genetic factors, metabolic conditions that affect lens chemistry, traumatic injury to the eye, toxic exposures or medications, nutritional deficiencies, and environmental factors such as UV exposure. Heritable cataracts are congenital or inherited through genetic mutations. Metabolic causes include systemic diseases like diabetes or inherited metabolic disorders that alter lens metabolism. Traumatic cataracts result from direct injury to the lens or its capsule. Toxic cataracts come from drugs or toxins that damage the lens, while nutritional deficiencies can contribute to lens opacity and environmental exposure to UV light or radiation can increase risk. This broad etiologic framework covers the main ways cataracts develop beyond infection, purely anatomical classifications, or postoperative stages, which don’t describe the causes driving lens clouding.