As someone with early onset PVD at just 26, i obsessed over all possible symptoms of deterioration. I once read experiencing a curtain bring pulled in visual field is tantamount to having RD, but never understood. Can you help explain how exactly to know if someone is having, how long this feeling last?? For a second or less or longdr than that?? is this feeling anywhere close to how we feel when we blink but not actually blinking. Also what exactly is wavy or watery vision and how to recognize that too. And can these symptopms occur without someone experiencing flashes ?!?! Please help