What is a safe drug for ED for a man who has retinitis pigmintosa

My husband was told he is going blind a little bit at a time because of retinitis pigmentosa.He has ED,and we need to know what drug he can use that, will not effect or worsen his eye problem.He also found out he has a high trigliserite level,but he is taking niaspan for it.other than that he is healthy.His age is 52.

[Ash Tewari, MD, M.Ch.]

Hello,

Although viagra has been an effective drug in the treatment of ED, it does have higher incidence of ophthalmological side effects, than Cialis. Cialis works in a similar mechanism and has much less incidence of side effects, according to micromedex. Most ophthalmological adverse effects were in less than 2% of the population as recorded. The best thing to do would be to confirm with his opthalmologist as well and ask them if any phosphodiesterase inhibitors would be detrimental to his ocular conditions. Retinal arterial occlusion, and retinal venous thrombosis has been reported with the use of cialis as well, however has occured in less than 2% of the population, therefore confirmation with his ophthalmologist would be best.

Thanks!