Is blurry vision normal for months after a corneal transplant?

What's normal

Every corneal transplant starts out blurry. The cornea is the eye's front window, and it takes time for a new one to become clear and smooth.

After a full thickness graft (PK), the Academy says getting complete vision back may take up to one year or longer, and the Cornea Research Foundation of America says visual recovery often takes a year or longer. Much of that delay is the stitches, which hold the graft but also pull the cornea out of round until they are removed. StatPearls describes visual recovery after penetrating keratoplasty happening slowly over three or four months in the early phase, with refinement well beyond that.

After DSAEK or DMEK the timeline is compressed. The Cornea Research Foundation of America reports DSEK patients without other eye problems usually reach about 20/30 or better within a couple of months, DMEK provides 20/25 or better in about 3 out of 4 patients, and in some cases DMEK patients see as well as 20/20 with glasses a few days after surgery. Slow clearing in the first weeks is still common and does not mean the graft failed.

Endothelial grafts usually clear over weeks to a couple of months; full thickness grafts often keep improving for a year or more.

When it stops being normal

A decrease in vision after you had been improving is one of the RSVP rejection warning signs, and the Cornea Research Foundation of America describes it as decreased vision with a cloudy or foggy sensation. Call your surgeon's office right away rather than waiting for your next visit.

Sudden loss of vision, vision that gets worse day over day, or blurring that comes with pain, deep redness, or new light sensitivity all need urgent contact. Most rejections, caught early, can be reversed with minimal long term effect.