Correlation of color vision deficits and observable changes in the optic disc in a population of ocular hypertensives
T. R. Hamill, R. B. Post, C. A. Johnson and J. L. Keltner
Both glaucomatous cupping and the presence of acquired color vision
deficits have been reported to be precursors to the onset of visual field
defects in patients with suspected glaucoma. To examine the relationship
between early glaucomatous cupping and acquired color vision anomalies, we
performed anomaloscope (Pickford-Nicholson) and Farnsworth-Munsell 100-Hue
color vision tests in 48 ocular hypertensive eyes with either clinical
evidence of early glaucomatous cupping (group 1) or no evidence of
glaucomatous cupping (group 2). All patients had normal visual fields, as
determined by extensive static perimetry of the central visual field and
kinetic perimetry of the peripheral visual field. Although the overall
incidence of blue and blue-green color vision anomalies in the ocular
hypertensives was comparable with that reported in previous studies, we
found no clear association between early glaucomatous cupping and color
vision anomalies. The relationship between these two precursors to visual
field loss remains unclear.
