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Ocular dysfunction during the amytal suppression test

J DeToledo1, D B Smith, R Stanulis

  • 1George Washington University, Washington, DC 20037.

Neuropsychologia
|September 1, 1993
PubMed
Summary
This summary is machine-generated.

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The amytal suppression test (AST) can cause temporary visual impairment in the eye ipsilateral to injection (EII). This visual dysfunction is common during the AST and may result from amytal affecting the ophthalmic artery.

Area of Science:

  • Ophthalmology
  • Neurology

Background:

  • The amytal suppression test (AST) is a diagnostic tool used in neurology.
  • Visual function parameters are crucial for neurological assessments.

Purpose of the Study:

  • To assess visual function during the amytal suppression test (AST).
  • To determine the incidence and nature of visual impairment in the eye ipsilateral to injection (EII) during AST.

Main Methods:

  • Evaluated pupillary light response, consensual reflex, pupillary symmetry, monocular reading, and monocular visual recognition in 16 patients during AST.
  • Administered amytal via intracarotid injection.

Main Results:

  • 7 out of 16 patients experienced significant visual impairment in the EII.

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  • Impairment ranged from transient blurring to complete vision loss.

    • Conclusions:

    • Visual dysfunction in the EII during AST is a common finding.
    • This dysfunction is likely due to amytal reaching the EII via the ophthalmic artery, causing cycloplegia, iridoplegia, and retinal suppression.