What Causes Heavy Sensation Over Eye And Blurred Vision?

I feel a heavy sensation over my right eye x2 weeks associated with a dull ache in the right temple. I have occasional blurred vision . I feel like the right side is off, and does not focus a quickly or correctly as the left. Not sure what the deficit is, because vision looks clear in both eyes, but I can tell there is something different with the right eye. It is more noticeable in sunlight, and there is a haze when looking at lights in buildings. I am 24, and never experienced this before