Table I
Ophthalmological records.
Observer Visual acuity (20 ft.) Near point (mm) Muscle balance O.D. O.S. O.U. O.D. O.S. O.U. 20 ft. 33 cm B.B. 20/20− 20/20 20/20+ 100 110 110 0.25 Eso. 5 Exo. I.T.B. 20/25+ 20/25+ 20/20− 100 110 90 0.5 Eso. 1.5 Exo. 0.25 RH. M.J.B. (a) 20/15− 20/15− 20/15− 140 140 130 0.5 Eso. Normal 0.25 Hyper. (b)* 20/15− 20/15− 20/15− 140 140 130 0.5 Eso. Normal E.L.C. 20/15− 20/15− 20/15 130 110 105 1.0 Exo. Normal 0.5 Hyper. C.C.C. (a) 20/20− 20/25− 20/20+ 120 108 95 0.5 Exo. Normal 0.25 Hyper. (b)* 20/20+ 20/20+ 20/15− 120 110 110 0.25 Exo. Normal 1 Hyper. M.C. 20/15− 20/15− 20/15− 70 80 70 2 Eso. 1.75 Eso. 0.5 RH. L.H. 20/20+ 20/20+ 20/20+ 120 130 120 0.75 Eso. 0.5 Eso. E.L.H. 20/20 20/20 20/20+ 90 90 90 0.5 Eso. Normal 0.25 RH. D.H. 20/25+ 20/25 20/20− 110 110 100 0.5 Eso. 2 Exo. L.T.H. 20/20+ 20/15− 20/15− 140 140 140 0.5 Eso. Normal N.L.H. 20/20 20/20 20/20 120 130 110 0.5 LH. 0.5 Eso. J.J. 20/15− 20/15 20/15 120 120 100 0.5 Exo. 2 Exo. 0.5 RH. E.S.K. 20/15− 20/15− 20/15 105 100 100 3 Eso. 3 Exo. V.R.M. 20/15− 20/15− 20/15− 100 120 100 1.5 Exo. 9 Exo. M.R.R. 20/15− 20/15− 20/15− 105 115 95 2 Eso. Normal 2 Hyper. S.R. 20/20+ 20/15− 20/15− 130 120 120 Normal 7 Exo. M.S. 20/20+ 20/20 20/15− 100 110 90 0.37 RH. 2.5 Exo. J.T. 20/20 20/20 20/20+ 110 110 110 0.5 Eso. 3 Exo. G.H.W. 20/15 20/15− 20/15 90 110 90 2 Eso. 2 Exo. 0.5 RH.
Abbreviations:
Eso. Esophoria Exo. Exophoria Hyper. Hyperphoria RH. Right Heterophoria L.H. Left Heterophoria
* Repeat examinations made after three months of intensive observations.
Table II
Arithmetical mean threshold contrast. Stimuli brighter than surround (Part I). Angular subtense of stimulus (minutes of arc).
121.0 55.2 18.2 9.68 3.60 LogB 0 LogC Log B 0 Log C Log B 0 LogC Log B 0 LogC Log B 0 LogC 2.080 −2.124 2.084 −2.041 2.081 −1.894 2.053 −1.739 1.072 −1.127 2.061 −2.127 1.083 −2.061 2.078 −1.895 1.077 −1.671 0.523 −0.980 1.074 −2.082 0.605 −2.085 1.086 −1.861 0.533 −1.568 0.075 −0.868 0.076 −2.102 0.531 −2.049 0.542 −1.863 0.076 −1.460 −0.996 −0.401 −0.471 −2.081 0.078 −1.997 0.070 −1.736 −0.994 −1.083 −2.053 0.175 −0.497 −2.065 −0.504 −2.021 −0.975 −1.415 −2.031 −0.505 −2.768 0.703 −0.994 −1.937 −0.504 −1.971 −2.034 −0.918 −2.757 −0.044 −2.951 0.905 −2.029 −1.579 −0.991 −1.858 −2.755 −0.460 −2.979 0.090 −2.978 0.896 −2.756 −1.274 −2.020 −1.438 −2.952 −0.344 −2.984 0.116 −3.341 1.144 −2.907 −1.280 −2.769 −1.150 −2.989 −0.313 −3.346 0.298 −3.964 1.397 −2.987 −1.228 −2.981 −1.012 −3.323 −0.219 −3.982 0.618 −5.016 2.026 −3.065 −1.178 −3.331 −0.831 −4.002 0.151 −4.986 1.179 −6.032 2.868 −3.296 −1.148 −3.995 −0.595 −4.982 0.705 −5.999 1.944 −3.979 −0.891 −4.989 −0.079 −6.012 1.479 −4.995 −0.474 −5.948 0.622 −5.969 0.212
Table III
Interpolations from Fig. 10 . Log (arithmetical mean threshold contrast).
Angular subtense of stimulus (minutes of arc) B 0 100 10 1 1 × 10−1 1 × 10−2 1 × 10−3 1 × 10−4 1 × 10−5 1 × 10−6 121.0 −2.132 −2.130 −2.114 −1.959 −1.640 −1.198 −0.910 −0.461 0.238 55.2 −2.062 −2.060 −2.020 −1.857 −1.500 −0.996 −0.590 −0.069 0.666 18.2 −1.889 −1.857 −1.738 −1.421 −0.928 −0.325 0.137 0.716 1.467 9.68 −1.730 −1.658 −1.437 −1.070 −0.526 0.124 0.615 1.196 1.950 3.60 — −1.111 −0.812 −0.385 0.182 0.911 1.410 2.017 2.821
Table IV
Arithmetical mean threshold ΔB (B 0 = 0).
Angular subtense of stimulus (minutes of arc) Log ΔB 121.0 −5.836 −5.951 55.2 −5.444 18.2 −4.594 9.68 −4.184 −4.056 3.60 −3.268
Table V
Arithmetical mean threshold contrast. Stimuli brighter than surround (Part II). Angular subtense of stimulus (minutes of arc).
121.0 55.2 18.2 9.68 3.60 LogB 0 Log C Log B 0 LogC LogB 0 LogC LogB 0 LogC LogB 0 LogC −2.831 −1.208 −4.505 −0.372 −2.994 −0.308 −2.117 −0.434 −1.823 0.078 −3.551 −1.031 −5.134 −0.297
Table VI
Arithmetical mean threshold contrast. Stimuli darker than surround (Part II). Angular subtense of stimulus (minutes of arc).
114.0 55.5 18.9 9.55 5.01 LogB 0 LogC Log B 0 LogC LogB 0 LogC Log B 0 LogC Log B 0 LogC 2.022 −2.119 2.012 −2.033 2.022 −1.821 2.024 −1.699 1.073 −1.344 1.914 −2.103 1.894 −2.018 1.911 −1.881 1.901 −1.712 1.066 −1.278 1.035 −2.122 1.039 −2.037 1.041 −1.835 1.047 −1.667 0.115 −1.096 1.027 −2.143 1.029 −2.046 1.029 −1.869 1.024 −1.641 −1.152 −0.590 0.040 −2.096 0.027 −1.950 0.019 −1.740 0.070 −1.490 −1.826 −0.173 −1.029 −2.033 −1.012 −1.867 −0.949 −1.494 −1.200 −1.033 −2.068 −1.611 −2.024 −1.452 −0.999 −1.520 −2.004 −0.554 −2.807 −1.382 −2.798 −1.140 −1.952 −1.012 −2.970 −1.325 −2.900 −1.072 −2.603 −0.636 −3.190 −1.256 −3.457 −0.842 −3.042 −0.403 −3.287 −1.250 −3.920 −0.696 −3.546 −1.112 −4.532 −0.402 −4.055 −0.932 −5.073 −0.520 −5.156 −0.366 −5.224 −0.375
Table VII
Arithmetical mean threshold contrast. Stimuli brighter than surround (Part III). Angular subtense of stimuli (minutes of arc).
360.0 121.0 55.2 LogB 0 Log C Log B 0 LogC LogB 0 LogC 1.857 −2.519 1.850 −2.596 −0.053 −2.436 1.024 −2.455 1.044 −2.510 −0.994 −2.174 −0.051 −2.603 −0.052 −2.441 −1.859 −1.688 −1.041 −2.296 −1.005 −2.209 −2.924 −1.149 −1.883 −2.033 −1.878 −1.799 −2.948 −1.558 −2.939 −1.361 −3.997 −1.221 −3.969 −1.029 −5.052 −0.847 −4.974 −0.569
18.2 9.68 3.60 0.595 LogB 0 LogC LogB 0 LogC LogB 0 LogC LogB 0 LogC 1.853 −2.462 1.874 −2.063 1.044 −1.559 1.854 −0.323 0.070 −2.294 −1.023 −1.672 0.039 −1.324 1.034 −0.051 −0.984 −1.971 −1.900 −1.075 −1.887 −0.384 0.039 0.264 −1.871 −1.322 −2.953 −0.157 −2.965 0.593 1.019 0.643 −2.923 −0.655 −3.932 0.425 −1.894 1.136 −4.982 0.584 −2.941 2.104 −3.957 2.756 −4.999 3.397
Table VIII
Log (arithmetical mean threshold contrast). Interpolations from Fig. 15 .
Angular subtense of stimuli (minutes of arc) B 0 1000 100 10 1 1 × 10−1 1 × 10−2 1 × 10−3 1 × 10−4 1 × 10−5 360.0 −2.566 −2.566 −2.558 −2.478 −2.272 −1.959 −1.519 −1.205 −0.866 121.0 −2.561 −2.561 −2.553 −2.464 −2.212 −1.818 −1.324 −0.967 −0.562 55.2 −2.547 −2.547 −2.538 −2.428 −2.131 −1.666 −1.096 −0.686 −0.239 18.2 −2.460 −2.460 −2.428 −2.276 −1.914 −1.341 −0.614 −0.094 0.444 9.68 −2.339 −2.328 −2.241 −2.051 −1.672 −1.041 −0.208 0.396 0.978 3.60 −1.812 −1.721 −1.569 −1.322 −0.924 −0.300 0.622 1.253 1.837 0.595 −0.383 −0.248 −0.060 0.196 0.607 1.246 2.179 2.813 3.397