If you just want a plain Lens replacement -then your sight is not a lot different ,unless you had a lot of cataract's before Opp. Things are a lot brighter. The ones to improve your sight --Bi-focal or one eye long distance , one reading etc. Are imported
When I had mine done ( 10 years ago) they all flown in from Texas.
This might have changed, China may be making cheaper knock offs now
You need at least 1 night in hospital as the risk of eye infection is great. Also stay away from swimming pools for at least 2 weeks.