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  • Title: Optic atrophy after sildenafil use.
    Author: Sowka JW, Neiberg MN, Vollmer LA.
    Journal: Optometry; 2007 Mar; 78(3):122-8. PubMed ID: 17321461.
    Abstract:
    BACKGROUND: It has been well-reported that phosphodiesterase-5 (PDE-5) inhibitors, originally investigated for their effect on smooth muscles and now used widely in treatment of erectile dysfunction, can cause mild transient visual disturbances because of their action on inhibiting enzymes involved in retinal transduction. Recently, these medications have been associated with the development of non-arteritic anterior ischemic optic neuropathy (NAAION) with attendant vision loss. CASE REPORT: An older male patient, previously examined and ocularly healthy, presented asymptomatically with an occult optic neuropathy, not characteristic of NAAION. Neuroimaging and serology failed to reveal any other underlying cause. The patient did, however, report the use of sildenafil during the interval between his previously normal examination and the observation of his optic neuropathy. CONCLUSIONS: This case details the development of an optic neuropathy with atrophy seemingly associated with the use of sildenafil, although no cause and effect could be conclusively found. This may indicate that medications used in the treatment of erectile dysfunction may be responsible for optic neuropathies other than NAAION.
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