My husband took ONE cialis pill and within 24 hours was losing vision in his only good eye (other eye attacked by histoplasmosis as a child). He was disagnosed with non-arteric ischemic optic neuropathy (NAION) and had a very involved laser surgery many days after it happend. After the surgery one full quarter of his eye will still not undilate, he had to quit his lifelong career, can’t be outside or have outdoor light coming in the house, etc. This has been devistating and life altering to him. Is there anything that can be done?