Table 1

Summary of clinical findings

PatientAgeVARefractionHorizontal pendular nystagmusERGFundusM-R colour vision test
ERG  =  counting fingers; M-R  =  Mollon-Reffin test. The letters give the axis P  =  protan, D  =  deutan, and T  =  tritan. The number in parentheses gives the least saturated chip that could be discriminated from the greys; VI:3 has a right sided congenital cataract.
V:235R CF−3.5/+3.0×30ProminentAbsent 30 Hz cone responses;Abnormal foveal appearanceP(no)D(no)T(no)
L CF−4.0/+3.0×160Normal rod specific responsesP(no)D(no)T(no)
V:441R 6/60−2.0/+2.0×110AbsentAbsent 30 Hz cone responses;Abnormal foveal appearanceP(no)D(no)T(no)
L 6/60−2.5/+1.5×70Normal rod specific responsesP(no)D(no)T(no)
V:744R CF−2.0/+2.0×135ProminentAbsent 30 Hz cone responsesAbnormal foveal appearanceP(no)D(7)T(5)
L CF−1.5/+1.5 ×45Normal rod specific responsesP(no)D(6)T(5)
VI:120R 6/60+1.5/+1.5×110AbsentAbsent 30 Hz cone responsesAbnormal foveal appearanceP(no)D(7)T(4)
L 6/60+1.0/+2.0×80Normal rod specific responsesP(no)D(no)T(5)
VI:319R CFBalanceMinimalAbsent 30 Hz cone responsesAbnormal foveal appearanceNA
L 6/60−2.0/+3.0×75Normal rod specific responsesP(no)D(6)T(5)