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Table 1 Demographic characteristics of investigated families

From: USH2A gene variants cause Keratoconus and Usher syndrome phenotypes in Pakistani families

Families residential district Disease No. of living individuals No. of affected individuals Age of onset
Male Female Male Female  
Peshawar RP 5 5 2 2 Childhood (around 10 years )
Karak USH2 5 4 2 3 Congenital deafness, night blindness before10 years of age, pre-pubertal onset of RP
Kohat USH2 4 2 2 1 Congenital deafness, night blindness after10 years of age, Onset of RP in early adolescence
Waziristan KC 5 3 3 0 Early adolescence
Hangu KC 8 5 3 2 Middle adolescence