Stereoacuity development in children with normal binocular single vision.

We made 344 stereoacuity determinations (Titmus Stereotest) on 321 children, ages 1 1/2 to 13 years, who had normal binocular single vision tested by other factors. The data showed a gradual improvement in stereoacuity scores with increasing age--up to age 9--when a normal stereoacuity of 40 seconds of arc was consistently found. The lower limits of stereoacuity compatible with normal binocular single vision were 3 1/2 years, 3,000 seconds; 5 years, 140 seconds: 5 1/2 years, 100 seconds; 6 years, 80 seconds; 7 years, 60 seconds; and 9 years, 40 seconds.

[1]  R. Emde,et al.  THE SMILING RESPONSE. II: VISUAL DISCRIMINATION AND THE ONSET OF DEPTH PERCEPTION , 1964, Journal of Nervous and Mental Disease.

[2]  P. Romano,et al.  Atypical responses to the four-diopter prism test. , 1969, American journal of ophthalmology.

[3]  Charles D. Bernholz,et al.  Depth Perception as a Function of Age , 1972 .

[4]  K. Wybar.  Ocular Motility and Strabismus , 1976 .

[5]  G. Amigo.  Pre-school vision study. , 1973, The British journal of ophthalmology.

[6]  S. Wittenberg,et al.  EFFECT OF TRAINING ON STEREOSCOPIC ACUITY* , 1969, American journal of optometry and archives of American Academy of Optometry.

[7]  K. N. Ogle.  Researches in binocular vision. , 1950 .

[8]  S N Jani,et al.  The age factor in stereopsis screening. , 1966, American journal of optometry and archives of American Academy of Optometry.

[9]  T G Bower,et al.  The object in the world of the infant. , 1971, Scientific American.

[10]  M. Parks.  Stereoacuity as an Indicator of Bifixation , 1968 .

[11]  S M Luria.  Stereoscopic and resolution acuity with various fields of view. , 1969, Science.