Doctor Dan, My apologies for taking so long to get back to you. Since my question, i can confirm it is clearly sweat/heat induced. Things get blurry and my eyes burn. It is worse in my right eye ... my left barely gets affected. Afterward, at night, if i look at a bright light - street light (esp. w my right eye), there is a beautiful halo-rainbow from the haziness. OTC eye drops relieve the burning sensation but not the haziness. It's 7 hours now after I was working in the yard and my right eye is still burning and hazy. It doesn't seem right. Any other thoughts? I will definitely go see an eye doctor.