my advice look for a capable doctor .
Lifetime is useful if you have enough corneal tissue to go for enhancement after initial treatment.
For my case , end up with impaired vision due to misinterpretation from Dr.Yen Siew Siang . Until today optimax doctor not able to rectify my vision now . what is the use of the lifetime warranty or eyecheck ? Go back for check up , just simply a check from optometrist which unable/not capable to answer patient's queries about eye status.
I have been reading this thread and I am very sorry to hear of what you went through.