Study: Impotency drugs may affect vision

A University of Alabama study suggests impotency drugs, such as Viagra and Cialis, may produce an increased risk of optic nerve damage in certain men.

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<p><a href="http://www.physorg.com/news9936.html">Study: Impotency drugs may affect vision</a></p> <p>A University of Alabama study suggests impotency drugs, such as Viagra and Cialis, may produce an increased risk of optic nerve damage in certain men. </p>