Hi
Im not sure of the regulations with cabin crew medicals, however I know for pilots a 6 month healing period is required with a full eye test before a return of medical is issued. Try calling the CAA medical dept sorry havent got the med centre number but caa main line is 01293573700, bear in mind this is uk caa but im sure they will be able to advise you of any regulations.
I suspect the cabin crew requirements if any would be less restrictive, but take advice from as many people as you can before you do it.
I decided not to as I felt for me the risk was to great, but that was more to do with my personal medical condition rather than anything else. So take in the options and good luck with what you decide