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Previous Volume 342:1680 June 1, 2000 Number 22 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: Mild, transient visual changes such as increased sensitivity to light and color-tinge alterations occur in 3 percent of men who take sildenafil.^1,2,3 We therefore assessed whether sildenafil could alter ocular perfusion.

We studied the right-eye responses in 12 normal adults (10 men and 2 women; mean [±SD] age, 36±3 years) before and after the oral administration of 50 mg of sildenafil (Viagra, Pfizer, New York). We measured intraocular pressure and pulsatile ocular blood flow by analyzing five consecutive tonometric ocular pulse waves (tonometer, OBF Laboratories, Malmesbury, United Kingdom), retinal microcirculation by Doppler velocimetry (HRF flowmeter, Heidelberg Engineering, . . . [Full Text of this Article]

References

This article has been cited by other articles:

• Harris, A, Kagemann, L, Ehrlich, R, Ehrlich, Y, Lopez, C R, Purvin, V A (2008). The effect of sildenafil on ocular blood flow. Br J Ophthalmol 92: 469-473 [Abstract] [Full Text]  
• Yuan, Z., Hein, T. W., Rosa, R. H. Jr, Kuo, L. (2008). Sildenafil (Viagra) Evokes Retinal Arteriolar Dilation: Dual Pathways via NOS Activation and Phosphodiesterase Inhibition. IOVS 49: 720-725 [Abstract] [Full Text]  
• Pache, M., Meyer, P., Prunte, C., Orgul, S., Nuttli, I., Flammer, J. (2002). Sildenafil induces retinal vasodilatation in healthy subjects. Br J Ophthalmol 86: 156-158 [Abstract] [Full Text]  
• Morgan, J. C., Alhatou, M., Oberlies, J., Johnston, K. C. (2001). Transient ischemic attack and stroke associated with sildenafil (Viagra) use. Neurology 57: 1730-1731 [Full Text]