Is it normal for vision to seem worse after cataract surgery?

What's normal

It is jarring to have surgery and then see worse, but the early dip is well described. The American Academy of Ophthalmology says it is very common to have blurry or unclear vision in the days and sometimes even weeks after cataract removal, most of the time caused by normal swelling in the eye which occurs as a part of surgery. That swelling is exactly what the prescribed anti-inflammatory drops treat.

Two other things make early vision feel worse than it is. Your old glasses no longer match the operated eye, and the AAO says vision generally stabilizes at 2 to 3 weeks before a new prescription is measured. If only one eye has been done, the mismatch between eyes can be genuinely disorienting, which the AAO notes is a real practical problem for people who are significantly near or far sighted.

Expect the low point around day 1, clear improvement within a few days, and a real answer by the one week mark.

When it stops being normal

The American Academy of Ophthalmology says to consult your doctor if the blurriness does not subside after a week. Vision that is actively getting worse day over day, rather than slowly improving, should not wait for that week to pass.

Sudden decrease or loss of vision is a red flag in every source here. The National Eye Institute lists vision loss as a reason to contact your doctor. StatPearls describes endophthalmitis presenting with decreased visual acuity, red eye, and pain within the early weeks and requiring urgent treatment. If vision clouds up gradually months or years later, the AAO describes posterior capsule opacity, where the lens capsule becomes hazy or wrinkled and starts to cloud your vision, which StatPearls says affects about 1 in 5 eyes within 3 years and is treated with a short YAG laser procedure.