There are no restrictions after cataract surgery or LASIK except no eye rubbing or swimming for 1 week. PRK patients should avoid direct eye exposure to sunlight or tanning beds for 6 months after surgery, and should preferably always protect their eyes from UV exposure. DMEK, DSAEK, and PK patients should avoid heavy lifting and bending past the waist for the first week after surgery. Patients receiving a PK must protect their eye for the rest of their life and avoid any kind of full-contact activities that could result in a direct blow to the eye. Following DMEK and DSAEK, patients may not fly or drive to an elevation greater than 2,000 ft to avoid elevated pressure caused by the bubble used to attach the transplant tissue. The bubble is generally only big enough to limit travel for 1 day following DSAEK and for 4-5 days following DMEK.