Abstract
PurposeTo report 15-year incidence rate and associated risk factors of pterygium among people aged 30 years and above at baseline in the rural clusters of longitudinal Andhra Pradesh Eye Disease...
Highlights
Pterygium is an elevated, superficial, fibro-vascular proliferation which typically extends from the nasal perilimbal conjunctiva, which can extend onto the corneal surface.[1 2]
The lowest prevalence was reported in Saudi Arabia (0.07%, age range: 17-82 years), while the highest was from China (53%, age range: 40-87 years).[23]
We report the 15-year incidence rate of pterygium and its risk factors among people who were ≥30 years at baseline (1996-2000)
Summary
Superficial, fibro-vascular proliferation which typically extends from the nasal perilimbal conjunctiva, which can extend onto the corneal surface.[1 2] In advanced cases, pterygium can distort the corneal topography and obscure the optical axis, leading to significant irregular astigmatism and visual impairment.[3 4] Several studies have reported the prevalence and risk factors for pterygium.[2 5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23] According to a recent metaanalysis, the global prevalence of pterygium was 12% which ranged from 3% in those aged. To the best of our knowledge, only four cohort studies have been reported from African, Chinese and South Korean populations with incidence data ranging from 4.9% to 11.6%, depending on the number of years of follow-up.[25,26,27,28]
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