You do not mention your age. Sometimes, there can be an aging change of the white part of the eye which causes a darkish discoloration and this may be located, near the eye muscle insertion of the horizontal eye muscles. I would recommend that you make an appointment for an eyeMD to determine the diagnosis.
Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California
I have no idea what she is talking about regarding discoloration of the eye muscles. You really can't see the eye muscles unless you surgically pull back the conjunctiva and tenons capsule. Please get a second opinion. I suspect she was talking about the retina or optic nerve perhaps.
Could it have something to do with my agstigmatism I have football shaped eyes?
When I saw the Eye Dr last year she did not mention anything about it. I am 37 by the way. Even when I asked her she didn't give me an answer only that I needed to spend extra money on a special test.