my husband is experiencing a situation with his eyes, mostly his left eye. He says that in his vision he sees a sort of half moon shape of a sparkling light, when it started was fairly small and then grew to about a third of the peripheral vision stayed that way for approximately 5 minutes then all of a sudden it was gone. He has no headache and no general complaints. We are unsure of the situation and are looking for feedback. Thanks Lee YYYY@YYYY