Answers are grounded in this paper and cite their sources.
The incidence and severity of keratoconus in Asir Province, Saudi Arabia, is high with an early onset and more rapid progress to the severe disease stage at a young age. This might reflect the influence of genetic and/or environmental factor(s) in the aetiology of keratoconus.
No takes yet. Share an insight, caveat, or question.
Abdullah Ali Assiri (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: