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List of Clinical Signs
 

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Central Visual Fields

Overview

  • Includes the inner 30 degrees of vision.
    • How to Assess

    • Ask the patient to cover one eye. Move a red examination pin from lateral to medial, asking the patient when they can see the pin as red. Ask the patient if the pin disappears at any time.
    • Interpretation

    • Physiologic scotoma (blind spot) - at 15 degrees temporally, due to the entry of the optic nerve.
    • Ring scotomaRetinal degeneration
    • Central scotomaMacular or optic nerve pathology
    • Generalised scotomaCorneal, vitreal, retinal, optic nerve or intracranial pathology
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