DO NOT go to Optical 88, you'll get robbed. Sorry guys, but they charge very high prices compared to family-owned optical shops. I go to one in Sun Hung Kai Center. The prices are very fair and the guy speaks excellent English. Tell him big Indian Jay sent you and you might get a discount
I know it sounds like an advertisement but I will seriously never buy glasses anywhere else. Got myself some rimless Dior sunglasses for about $2000 HKD...The frames alone are worth more than that. Recently had a pair of Cartier specs fitted with prescription lenses...rimless again..only cost me $320 for the lenses.
When I broke one of the lenses on my Diors I went to Optical 88 and I was quoted something like $500 for the lens (Transitions grey). My guy charged me about 1/2 of that ($260).