Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Similarities between Congenital Tritan Defects and Dominant Optic-Nerve Atrophy: Coincidence or Identity?

Not Accessible

Your library or personal account may give you access

Abstract

Dominant inherited optic atrophy is usually a stationary disorder with typical findings of optic-nerve pallor, abnormal distance acuity but essentially normal reading vision, minimal visual-field defect, and characteristic color confusions in the blue–green region of the spectrum. The severity of these is extremely variable, even within the same family. In patients with minimal disease, distance acuity may be close to normal and optic pallor may be so subtle that a definitive diagnosis cannot be made unless several affected members of a family are seen. An evaluation of ocular- and color-vision findings are presented for three pedigrees. Color tests included determination of the Rayleigh equation, the American Optical HRR plates, the Farnsworth–Munsell 100-hue test, and determination of netural points and chromaticity confusions. Our results suggest a strong similarity in color vision between previously reported congenital tritan defects and patients with dominantly inherited optic atrophy. Criteria distinguishing the two conditions are suggested. However, a perusal of the literature reveals that most congenital tritanopes were not adequately evaluated to rule out dominantly inherited optic atrophy. Therefore, the almost identical color-vision profiles and pattern of inheritance of the two conditions lead us to question the existence of congenital tritan defect as an independent entity.

© 1970 Optical Society of America

Full Article  |  PDF Article
More Like This
Color matching in autosomal dominant tritan defect

Joel Pokorny, Vivianne C. Smith, and Loe N. Went
J. Opt. Soc. Am. 71(11) 1327-1334 (1981)

Further Studies on Acquired Deficiency of Color Discrimination*

G. Verriest
J. Opt. Soc. Am. 53(1) 185-195 (1963)

Congenital Achromatopsia: A Report of 19 Cases*

Louise L. Sloan
J. Opt. Soc. Am. 44(2) 117-128 (1954)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved