The sun is intensely strong in Thailand even when overcast, and the reflection from a surfboard and the water is enough to damage your retinas. Having burnt eyeballs really sucks, it's like having grit permanently stuck to the inside of your eyelids. What to do...wear eye protection or slowly go blind? Blueye's Greeenroom surf goggles (Bt 5,000) seem to be the best on the market, designed specifically for surfing with 100% UV protection, venting, anti-fog coating and impact resistent lenses.