Table 1.
Observer |
Age (yrs) |
Strabismus (at 6 m) |
Eye |
Refractive error (diopters, D) |
Line letter VA (single letter VA) |
Stereo* |
Threshold spacing S (deg) |
Acuity size A (deg) |
Spacing:acuity ratio S/A |
Eq. blur (D) |
Eq.ecc. φeq (deg) |
φA (deg) |
φcrowding (deg) |
Normal | |||||||||||||
AF | 22 | None | R | +0.25/-0.50 × 180 | 20/12.5 | 20” | — | — | — | — | — | — | — |
L | +0.25/-0.25 × 25 | 20/12.5 | 0.123 | 0.083 | 1.48 | 0 | 0 | 2.86 | 0.45 | ||||
EJ | 21 | None | R | −2.50/-0.50 × 83 | 20/12.5 | 25” | — | — | — | — | — | — | — |
L | −3.00 | 20/12.5 | 0.190 | 0.143 | 1.33 | 0.33 | 0 | 4.93 | 0.45 | ||||
SS | 28 | None | R | −0.25 | 20/12.5 | 20” | 0.138 | 0.103 | 1.34 | 0.13 | 0 | 3.55 | 0.45 |
L | pl/-0.25 × 119 | 20/12.5 | — | — | — | — | — | — | — | ||||
Purely strabismic (not anisometropic) | |||||||||||||
JS | 22 | L EsoT 6-8Δ & HyperT 4-6Δ | R | +1.25 | 20/16 | fail | — | — | — | — | — | — | — |
L | +1.00 | 20/40 (20/32+1) | 0.257 | 0.102 | 2.52 | 0.15 | 0.41 | 3.52 | 0.86 | ||||
SF | 19 | L ExoT 6Δ | R | −1.50/-0.25×90 | 20/12.5+1 | fail | — | — | — | — | — | — | — |
L | pl/-1.00×30 | 20/125+1 (20/80+2) | 0.993 | 0.523 | 1.90 | 1.58 | 2.86 | 18.03 | 3.31 | ||||
GW | 58 | R EsoT 4-6Δ | R | pl | 20/63−2 (20/24+2) | fail | 4.398 | 0.353 | 12.46 | 1.05 | 14.21 | 12.17 | 14.66 |
L | +0.50/-0.75×180 | 20/16−1 | — | — | — | — | — | — | — | ||||
JZ | 19 | L EsoT 4Δ | R | pl/-0.50×95 | 20/16+2 | fail | — | — | — | — | — | — | — |
L | −0.25/-0.50×50 | 20/63+2 (20/32−1) | 0.440 | 0.173 | 2.54 | 0.45 | 1.02 | 5.97 | 1.47 | ||||
BN | 22 | L EsoT 3-4Δ | R | +5.50/-2.25×5 | 20/16+2 | fail | — | — | — | — | — | — | — |
L | +5.50/-1.50×175 | 20/50−2 (20/25−2) | 0.638 | 0.210 | 3.04 | 0.58 | 1.68 | 7.24 | 2.13 | ||||
CL | 19 | R EsoT 4Δ | R | −0.75 | 20/50+2 (20/32−2) | fail | 0.538 | 0.255 | 2.11 | 0.73 | 1.34 | 8.79 | 1.79 |
L | −0.25/-0.50×55 | 20/16−2 | — | — | — | — | — | — | — | ||||
Strabismic & anisometropic (These data are blue in Figures 2–6 & 11, and red in Figures 8–10 & 12.) | |||||||||||||
SM | 55 | Alt. ExoT 18Δ | R | +2.75/-1.25 × 135 | 20/40 (20/25+1) | 320” | 0.455 | 0.208 | 2.19 | 0.57 | 1.07 | 7.17 | 1.52 |
L | −2.00 | 20/16−2 | — | — | — | — | — | — | — | ||||
JD | 19 | L EsoT 3Δ | R | +2.50 | 20/16 | fail | — | — | — | — | — | — | — |
L | +5.00 | 20/125 (20/125+2) | 0.765 | 0.413 | 1.85 | 1.24 | 2.1 | 14.24 | 2.55 | ||||
AW | 22 | R EsoT 4-6Δ & HypoT 4Δ | R | +2.75/-1.0 × 160 | 20/80−1 (20/50−1) | fail | 0.638 | 0.258 | 2.47 | 0.74 | 1.68 | 8.90 | 2.13 |
L | −1.00/-0.50 × 180 | 20/16−1 | — | — | — | — | — | — | — | ||||
GJ | 23 | R EsoT 4-5Δ | R | +3.50/-1.00 × 97 | 20/63+1 (20/40−1) | fail | 0.805 | 0.200 | 4.03 | 0.55 | 2.23 | 6.90 | 2.68 |
L | Pl | 20/16−1 | — | — | — | — | — | — | — | ||||
AP | 24 | L EsoT 4-5Δ & HyperT 2-3Δ | R | −1.25/-0.50 × 175 | 20/16−2 | fail | — | — | — | — | — | — | — |
L | −0.50/-0.25 × 60 | 20/50+1 (20/40+2) | 0.580 | 0.225 | 2.58 | 0.63 | 1.48 | 7.76 | 1.93 | ||||
VC | 23 | R ExoT 5-6Δ | R | +4.25/-1.50×10 | 20/200−4 (20/125−1) | fail | 17.740 | 0.958 | 18.52 | 2.92 | 58.68 | 33.03 | 59.13 |
L | pl/-0.50×170 | 20/12.5−1 | — | — | — | — | — | — | — | ||||
Purely anisometropic (non-strabismic) | |||||||||||||
SC | 27 | None | R | +0.50 | 20/16+2 | fail | — | — | — | — | — | — | — |
L | +3.25/-0.75 × 60 | 20/50+2 (20/40−2) | 0.332 | 0.220 | 1.51 | 0.61 | 0 | 7.59 | 0.45 | ||||
CJ | 22 | None | R | −15.00/-1.25 × 150 | 20/125−4 (20/125+1) | 200” | 0.936 | 0.512 | 1.83 | 1.55 | 0 | 17.66 | 0.45 |
L | −6.00 | 20/16−2 | — | — | — | — | — | — | — | ||||
AM | 48 | None | R | +0.75/-0.70 × 95 | 20/12.5 | 200” | — | — | — | — | — | — | — |
L | +2.00 | 20/32−2 (20/25−2) | 0.240 | 0.200 | 1.20 | 0.55 | 0 | 6.90 | 0.45 | ||||
RA | 15 | None | R | −2.00/-1.75 × 155 | 20/32+1 (20/32+1) | 70” | 0.423 | 0.253 | 1.67 | 0.72 | 0 | 8.72 | 0.45 |
L | +0.25/-0.25 × 60 | 20/12.5 | — | — | — | — | — | — | — | ||||
SWP | 24 | None | R | −0.25 | 20/16+2 | 30” | — | — | — | — | — | — | — |
L | +1.75/-0.25 × 45 | 20/32+2 (20/32+2) | 0.383 | 0.250 | 1.53 | 0.72 | 0 | 8.62 | 0.45 | ||||
SW | 42 | None | R | +2.00/-0.50 × 90 | 20/12.5−2 | 200” | — | — | — | — | — | — | — |
L | +4.25/-1.25 × 120 | 20/80−2 (20/63−1) | 0.675 | 0.493 | 1.37 | 1.49 | 0 | 17.00 | 0.45 |