hi, I have been experiencing off and on eye vision issues. I see lights, usually upon standing up from sitting or bending over, that make me feel like I can t focus until it goes away. I shut my eyes when this is happening and I can still see the lights with a dark spot in the middle(with eyes shut). I have been taking amlodipine and metaprolol for high blood pressure for a few months. Is this a side effect. I wear glasses-astigmatizism to light and focusing from near to far and far to near. I use them for reading. Thank you in advance for any insight into this.