My friend was seeing zigzags & geometric shapes. Thght retina was detached..Dr said it was from migra ines. Called ocular migraines .crazy weird..he was told to see neurologist .Dr he saw was in Aventura..very nice..Dr.Ira Wiener. 305-931-2673 .www.aventuraopthalmology.com..wore Hawaiian shirt to work..cool..just sayin..easy to talk to. ..good luck