I know he is going for a routine check up next month, i know his eyes are not great as he said when he looks at me it could appear that i have shaved my eye brows as there is bits missing it also seems to be worse in dark conditions and from a distance, he did tell me once that his left eye went completely dark but that he regained his vision slowly after a couple of days. I think he had about a couple of years of treatments with injections and lazer treatment i ask him if he could go blind but he said he could not tell me as he does not know what the future will be, i just hope everything is ok next month when he gets them checked.
Thanks for the advice much appreciated.