I find that its harder to focus on objects when I wear contacts; because in cricket you are not normally in danger of having your glasses broken as it isn't a contact sport, there's not really any need of wearing contacts. Re surgery, he may be concerned about the possible side-effects, or potential loss of sight that can very rarely occur. Since he depends greatly on his eyes to play cricket, it would ruin his career. And normally people don't get LASIK eye surgery until they are in the late thirties or so (I think anyway).