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At some point—usually as you enter middle age—most people develop this eye condition, which is a clouding of the eye’s lens that can get progressively worse and impair your vision.
Cataracts may be partial or complete, stationary or progressive, hard or soft. Histologically, the main types of age-related cataracts are nuclear sclerosis, cortical, and posterior subcapsular. [41] Nuclear sclerosis is the most common type of cataract, and involves the central or 'nuclear' part of the lens. This eventually becomes hard, or ...
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Cataracts are the leading cause of child and adult blindness that doubles in prevalence with every ten years after the age of 40. [57] Consequently, today cataracts are more common among adults than in children. [56] That is, people face higher chances of developing cataracts as they age.
Prevalence of cataract considerably varies by age group, as well: for ages 50–59, it is 7.88%; for ages 60–69, it is 24.94%; for ages 70–79, it is 51.74%; in people over 80 years old, it is 78.43%. The overall cataract-surgery coverage rate was 9.19%. The prevalence of cataract and cataract surgical coverage also significantly varies by ...
Childhood cataract is cataract that occurs at birth or in childhood. [1] It may be congenital or acquired. Congenital cataracts are defined as the presence of lens opacification during childhood. [2] About 1.14 million children in the world are blind. [3] Cataracts are the leading cause of blindness in children. [4]
High order aberrations increase with age and mirror symmetry exists between the right and the left eyes. [ 4 ] Several studies have reported a compensation of the aberration of the cornea by the aberration of the crystalline lens.
A new study suggests that adults over the age of 55 with too much "good" HDL cholesterol may be at a higher risk of developing glaucoma. ... and their health was tracked for an average of 14 years ...