Well, it seems that your eyes Are frequently exposed to sun light, I mean, which are harmful to your eyes. So, indeed, it is natural to get blurred eyes in that situation since our eyes , especially our pupils are quite fragile and could not bear such strong beams, automatically, they will protect themselves. Strong beams will cause burning feelings and related problems. What you should do is to avoid being under the sun from too long, and you should get yourself a pair of sunglasses.
You must not have worn the sunglasses which can help you get rid of the uv in the strong sunlight. The strong sunlight is harmful for your eyes, especially when it shines on you directly. After the sun exposure, the eyes will feel burning. You'd better use the cold cloth to cover to release the symptom.