eye disease
type: Concept
narrower: cataracts

localized diseases
type: Concept
narrower: cataracts

diseases and medical conditions
type: Concept
narrower: cataracts

cataracts
type: Concept
definition: Cataracts are the leading cause of reversible visual loss among adults age 55 years and older. Cataracts result from the clouding of the natural lens, the part of the eye responsible for focusing light and producing clear sharp images. [Source: Encyclopedia of Health & Aging; Cataracts]
broader: localized diseases
broader: eye disease
broader: diseases and medical conditions

concepts
type: Collection
type: ConceptGroup
member: cataracts