Form vision deprivation amblyopia: further observations.
Nine cases of esotropia occurring in deprivation amblyopia, where exotropia rather than esotropia is usually found, showed a refractive error of hypermetropia. This fact suggested that an accommodative factor is largely responsible for the development of esotropia. A- or V-pattern strabismus was encountered in a higher incidence in deprivation amblyopia than in ordinary strabismus. Pattern-reversal VEP showed more prominent abnormality than flash VEP did. Studies of the sensitive period of the visual system revealed that the sensitivity is likely to be low for a month or two after birth and increases with a peak around the 18th month of age, decreasing thereafter with a waning slope to the end of the 8th year of life.
Awaya
S
S
Department of Ophthalmology, Nagoya University School of Medicine, Japan.
Miyake
S
S
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000550:Amblyopia / Q000150:complications / Q000175:diagnosis / Q000209:etiology*; D001458:Bandages; D002648:Child; D004948:Esotropia / Q000209:etiology; D005074:Evoked Potentials, Visual; D005099:Exotropia / Q000209:etiology; D005142:Eyelid Neoplasms / Q000601:surgery; D005260:Female; D005556:Form Perception; D006392:Hemangioma, Cavernous / Q000601:surgery; D006801:Humans; D006956:Hyperopia / Q000209:etiology; D008297:Male; D012683:Sensory Deprivation; D013285:Strabismus / Q000209:etiology; D014792:Visual Acuity