My eyes getting dull than before. I have noticed few dark grey spots in my eyes sclera parts of both the eyes. This started from past 3-4 years and even I noticed visible red lines in sclera part itself too. Due to which overall look of my eyes got dull too and my eyes gets tired soon as well. I consulted one eye specialist ard 3 yrs back they mentioned I have dry eyes issue and they prescribed optive eye drops to use four times  a day. But I didn't get any benefit yet, only temporary relief is there. No benefit in context to grey spots in eyes I got yet. So kindly suggest the relevant solution.