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  • 1
    Electronic Resource
    Electronic Resource
    Rod-cone interaction in flicker perimetry: evidence for a distal retinal locus (1985)
    Springer
    Documenta ophthalmologica 60 (1985), S. 3-36 
    Details
    ISSN: 1573-2622
    Keywords: rods ; cones ; flicker ; perimetry ; retina
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The luminance threshold for the detection of 25 Hz flicker was measured in nine patients with retinal disorders under stimulus conditions that have been shown previously to involve an interaction between rod and cone systems. The disorders studied included congenital stationary nightblindness, X-linked juvenile retinoschisis, hereditary dominant optic atrophy, optic atrophy found in association with neurofibromatosis, retinitis pigmentosa, choroideremia, and an acquired diffuse photoreceptor disorder, all of which involve pathologic changes that are presumed to occur primarily at specific levels of the retina. The results are consistent with a distal (outer) retinal locus for the rod-cone interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00164567
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stereoacuity testing in patients with retinal and optic nerve disorders (1995)
    Springer
    Documenta ophthalmologica 91 (1995), S. 265-271 
    Details
    ISSN: 1573-2622
    Keywords: Malingering ; Optic nerve disorders ; Retinal disorders ; Stereoacuity ; Visual acuity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A study comparing the relative sensitivity for detecting abnormal stereoacuity in patients with retinal or optic nerve disease on clinically used stereoacuity tests is not available. It is also not apparent from the ophthalmic literature if optic nerve or retinal diseases are likely to have a greater impact on stereoacuity performance. We were also interested in determining a level of visual acuity loss that would likely result in an impairment of stereoacuity on these clinical tests. Forty-two patients with various retinal and optic nerve disorders and eighteen normal subjects were evaluated for stereoacuity using three tests: Titmus Stereoacuity Test (TST), Randot Stereoacuity Test (RST), and TNO Stereoacuity Test (TNO). The performance on these three stereoacuity tests was compared with the normal subjects. Additionally, TST scores from our patients were compared to predicted TST scores derived from a previously published nomogram. For patients with retinal and optic nerve disease, an abnormal score on one clinical test of stereoacuity was likely to predict an abnormality on the other tests. Performance on the TST relative to the predicted value derived from a nomogram was not significantly different for patients with retinal vs. optic nerve disease. With some exceptions, patients with visual acuities of 20/30 or worse in at least one eye were likely to show abnormal stereoacuity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01204177
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    Paper (German National Licenses)
    Fulltext
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