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Visual field changes in cone-rod degenerations

H R Krauss, J R Heckenlively

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |November 1, 1982
    PubMed
    Summary
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    Con-rod degeneration (CRD) presents unique visual field changes distinct from optic neuropathy. These findings, alongside fundus examination, aid in diagnosing this retinal degenerative condition.

    Area of Science:

    • Ophthalmology
    • Medical Genetics
    • Neuroscience

    Background:

    • Con-rod degeneration (CRD) is a rare inherited retinal disorder.
    • Understanding its clinical manifestations is crucial for accurate diagnosis.

    Purpose of the Study:

    • To review visual field test results in patients with con-rod degeneration (CRD).
    • To identify characteristic fundus findings and visual field changes associated with CRD.

    Main Methods:

    • Retrospective review of visual field test results from 20 patients with CRD.
    • Analysis of fundus findings including optic disc appearance, vascular changes, and pigment deposits.

    Main Results:

    • Typical fundus findings included optic disc pseudoedema, temporal disc atrophy, and parapapillary/disc telangiectasis.

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  • Patients often had few to no retinal pigmentary deposits.
  • Distinctive visual field changes were observed, aiding differentiation from optic neuropathy.

    • Conclusions:

    • Visual field testing is a valuable tool in diagnosing con-rod degeneration (CRD).
    • The characteristic visual field patterns support a diagnosis of retinal degeneration over optic neuropathy.