Table 5

The comparison of causative aetiologic factors for SVI between our study and other selected studies

Countries with studiesNAgeMajor anatomic sites of involvement
CVI (%)Cornea and conjunctiva (%)Refractive (%)Lens (%)Glaucoma (%)Uvea (%)Retina (%)Optic nerve (%)Whole globe and others (%)
Rahi et al,3 UK (HB)493<16 years40.06.03.02.0NA24.023.02.0
Kong et al, 6USA (SB)3070School age18.01.01.02.03.04.025.022.024.0
Cetin et al,8 Turkey (HB)99836.6 months22.22.04.722.90.66.025.010.84.6
Muhit et al,9 Bangladesh (SB)1935132 months26.632.54.32.012.78.014.1
Mehari et al,10 Ethiopia (HB)7359.4 years62.014.52.70.41.119.3
Onakpoya et al,11 Nigeria (HB)286<15 years37.114.36.61.42.138.4
Muecke et al,12 Myanmar (SB)208<16 years1.043.614.45.42.57.44.021.2
Ntim-Amponsah et al,13 Ghana (SB)244School age2.728.815.810.6-6.86.229.1
Sitorus et al,14 Indonesia (SB)479School age16.116.41.77.718.95.034.2
Ruhagaze et al,19 Burundi (SB)117<16 years23.910.118.38.314.71.811.911.1
Krishnaiah et al,20 South India (SB)111<16 years8.11.89.98.14.518.96.342.4
Koay et al,21 Malaysia (SB)469<18 yearsNA5.1NA17.27.60.717.4NA2.5
Limburg et al,22 Vietnam (PB/SB)28 800<15 years1.524.10.715.15.42.924.610.210.9
Sia et al,23 Cambodia (SB)95<16 years25.81.627.43.23.221.03.214.5
Heijthuijsen et al,24 Suriname (HB/SB)4643<16 years7.76.215.43.11.533.87.76.1
Current study, Turkey (HB)11 87147.0 months30.52.65.817.12.91.024.69.65.9
  • HB, hospital based study; PB, population based study; SB, school for the blind based study.