Table 2.

Clinical details

ObserverAge (y)SexConditionEyeRefractive errorLetter acuity (Snellen)
Strabismic (“stereoblind”)
 DP23FAlternating XT >25 ΔR( NDE) L (DE)+1.00 +1.0020/16+1 20/12.5−1
 AB24FAlternating ET 9 Δ R hyT 8 ΔR (NDE) L (DE)−3.75 −6.2520/20 20/20
 LR28FAlternating XT 5 ΔR (NDE) L (DE)−0.75 −4.0020/20 20/20
 GJ25MR ET 5 ΔR (NDE) L (DE)+3.00 –0.2520/40−1 20/16−1
Anisometropic (“stereoanomalous”)
 GD46FAnisometropiaR (DE) L (NDE)+0.25 +3.7520/12.5 20/50+2
Normal
 SP20MNormalR L−5.25 −5.020/16−2 20/16−2
 OP20FNormalR L−0.75 −1.2520/16+1 20/12.5
 AT27FNormalR L−6.50 −6.2520/20 20/20
 DC23FNormalR LPlano Plano20/20 20/20
 JY20FNormalR L−1.25 −1.5020/20 20/20
  • XT, exotropia; ET, esotropia; hyT, hypertropia; Δ, prism dioptres.