Table 3. Detection rate of (likely) causative variants per visual impairment (sub)type.

(Sub)type of visual impairment	Total number of cases	Percentage of cases with (likely) causative variants (%)
Achromatopsia	2	100
Stargardt disease	5	100
Retinitis pigmentosa	129	63
Leber congenital amaurosis	15	60
Developmental eye defect	6	50
Cone dystrophy	19	47
Cone–rod dystrophy	30	43
Cataract	6	33
Macular dystrophy	25	28
Retinal dystrophy	20	25
Optic atrophy	6	17
Glaucoma	2	0
Myopia	1	0
Total	266	52