By far the most common reason would be "corneal arcus" (Use Google IMAGES to see what these look like). In people younger than 70 they can be a marker for high cholesterol so when we see then we ask the family MD to do a "Fasting lipid profile" and if abnormally high cholesterol or triglycerides are noted then they should be treated (diet, exercise, weight reduction and if that doesn't work with lipid lower medication).
In older people and many younger people with normal cholesterol it represents an aging change of the eye llike our hair graying or wrinkles on the skin. It does not affect vision.
If you went to an Eye MD physician ophthalmologist they would have likely noticed and discussed with your. Next time you have an eye exam see a Eye MD find one at www.aao.org
Thank you for your thoughts. My cholesterol is good, my weight is down and I exercise regularly.
I was wondering if it could be related at all to the Tamoxifen since I am not completely metabolizing it, but have not been re-dosed yet and so am taking the full dosage still.
I am aware that Tamoxifen can cause cataracts and dry eye, but this is something else.
I will be visiting an ophthalmologist Sept 22, but I had had a particularly bad day with the burning that I was unable to work and was hoping to get a clue to what the problem might be.
Thank you again for your time and expertise.
Not at all likely due to tamoxifen but you can ask your eye MD his/her opinion.