There are a number of conditions that could be causing your symptom. Most likely, it appears you have something in the eye that is causing this spot. The nice answer is that you have a partial Posterior Vitreous Detachment and some of the little attachment plate material that holds the vitreous against the nerve or retina has popped off and is now floating in front of the retina casting a shadow. This could be a relatively static thing with it not moving much or it could be sort of floaty where you move your eye and it moves too, but sort of follows before it stops moving. That s the nice answer. The not so nice answer: You have hypertension at the age of 32. Why? Have they worked this up? Is this a diet issue? lifestyle issue? but whatever it is, you have this hypertension . The retina as certain signs in it that demonstrate to the physician that you have hypertensive vascular disease. The tiny vessels in the retina become spasmed and narrow, and tortuous, and hard, and they can slow the flow of blood in a vein while crossing that vein, kind of like the car running over the garden hose and the sprinkler doesn t go around very fast anymore, at least until you get the car off the hose. These vascular spasms can cause small strokes or infarcts in the nerve fiber layer of the retina. These areas are called cotton wool spots and they look just like that, little blotches of cotton near the retinal surface. That means those nerves are NOT sending messages along the nerve fibers, and it also means that the light passing through the retina in that spot cannot hit the photoreceptors below. That could be a cause of the spot . Then you could have had a small hemorrhage. Those vessels ARE high pressure now due to the hypertension and they ll bleed within the retina causing these dot and blot hemorrhages which can block the view as well. The more complex problems that can cause a focal scotoma go on and on and vary from STD s, diabetes, MS, and on and on. My bet, either the floater or the retinal bleed or cotton wool spot.