Levitra

In the latest study by Alabama University researchers, 76 eye patients from one US clinic were asked about their lifestyle, their history of heart attacks, diabetes and high blood pressure, and if they had used Viagra or Cialis.

The researchers found no overall increased risk of Naion in the group which had used the impotence drugs.

But it did find "a strong and statistically significant" risk amongst Viagra and Cialis users who had suffered a heart attack and a small statistically "borderline" increase in risk for those with high blood pressure.

The team suggested the drugs could be reducing blood flow to the optic nerve resulting in damage.

Also writing in the journal, Howard Pomeranz, a consultant paid to review cases of Naion associated with impotence drugs, said most cases had occurred within 24 hours of taking the drug, frequently when the man woke the next morning.

"In most of the cases, sexual intercourse did not occur after erectile dysfunction drug use so physical exertion related to sexual intercourse cannot be blamed for the vision loss." He suggested further research on a larger group.

Christchurch urologist Sharon English said t...

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