Kala,

Sorry, rarely use taxis so can't quote you $/km but I think they're pretty reasonable. Let me guess about 35 - $40 from the airport to the city centre. Anyway, from what you've said about the cost of FOV in Singapore I think you should easily absorb the cost of taxis from what you'll be saving on your surgery costs.

The only ophthalmologist I know of in Australia who might be willing to try the Nd:YAG laser on your friend is Dr Tony Stubbs in Melbourne - phone 61 3 9397 8989.