Blurry Vision
Posteriar Vitreous Detachement, PVD an eyesight condition which I understand is age related. It's quite possible pilots of a certain vintage with this eyesight condition, may not be completely aware they have it.
If one senses flickering at the edge of the eye during the day and flashing lights in the dark, it could be one of two things, an optical migrane or the onset of PVD and requires investigation.
Gell is likely to be coming away from the retina, the gell breaks away and floats around. It is possible tear's or hole's can occur to the retina and in extreme circumstances a Retina Detachement, with potential eyesight loss.
If this occurs it can be recoverable, provided you go immediately to an eye hospital. If an eye hospital is not available nearby, then a major hospital with an opthalmic specialist department. Even passing by an optician pop in and they will refer you there and then and call an ambulance.
I recently got PVD and the symptons are, of having an annoying fuzzy veil or lace curtain of patchy gell moving across your vision. Somewhat worse than 'floaters' which most people have at some stage anyway. The gell floates across the back of the lense making vision temporarily look fuzzy, until you blink and try and move the gell away and re focus.
I've always been of the belief age 60 is a pretty good age to hang up the headset, in fact I did it at 58 and glad I did. But to have reached today almost 61 with last eye test -0.0 Dps Left eye + 0.5 Dps Right and +2.25 for reading in both, being able to read one up from the bottom line of the eye test chart to probably still pass a class one but for PVD, would be of concern to me.
I understand most can learn to live with it and ignore its presence.
After having an in depth eye test at my optician, with drops to dilate the pupil to allow the optician to have a very good look into the eye and after having photographs taken of the retina I'm glad to say I have extremely healthy Retina's.
I could be wrong, but I think an AME might not pick up this condition unless one said something, then it could be curtains (excuse the pun) to the rest of your flying career I would suspect.
As I am retired I feel I am able to say the above. If it helps any one actively still flying, it's worth being aware of the condition.
p.s. I am not a medic if some of the above is inaccurate, this is my personal experience and opinion and should not be acted upon.