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Cyanopsia is rare and occurs primarily in individuals who have undergone cataract surgery or used specific medications. It is not influenced by ethnic, or geographic factors but is more common in certain demographic groups. Older adults are more likely to experience cyanopsia due to the higher frequency of cataract surgery in this age group.
Cataracts are most commonly due to aging but may also occur due to trauma or radiation exposure, be present from birth, or occur following eye surgery for other problems. [1] [4] Risk factors include diabetes, longstanding use of corticosteroid medication, smoking tobacco, prolonged exposure to sunlight, and alcohol. [1]
Cataract surgery is one of the most cost-effective health interventions, since its economic benefits considerably exceed the cost of treatment. [128] [129] The 1998 World Health Report estimated 19.34 million people were bilaterally blind due to age-related cataracts, and that cataracts were responsible for 43% of all cases of blindness. This ...
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Couching (lens depression) was the original form of cataract surgery, and was used from antiquity. Chrysippus of Soli, a stoic Greek philosopher provided the earliest account of it. [6] Couching is still occasionally found in traditional medicine in parts of Africa and Asia.
Multiple complications are known to occur following eye injury: corneal scarring, hyphema, iridodialysis, post-traumatic glaucoma, uveitis cataract, vitreous hemorrhage and retinal detachment. The complications risk is high with retinal tears, penetrating injuries and severe blunt trauma.