What causes vision deterioration after myopia surgery?

Laser correction surgeries such as LASIK and LASEK correct vision by reshaping the cornea. If the cornea heals poorly or the shape does not stabilize properly after surgery, it may lead to decreased vision.

Myopia surgery may reduce tear secretion and worsen existing dry eye symptoms. Dry eye syndrome can affect the smoothness of the corneal surface, thereby impacting visual clarity. Improper use of the eyes after surgery is also a common cause of vision deterioration. If patients fail to develop good eye-use habits after surgery, such as prolonged near-eye work or excessive use of electronic devices, it may lead to vision regression.

Some patients may experience slight regression of refractive status within a period after surgery, meaning the surgical effect gradually diminishes. This may be due to the natural elastic recovery of the corneal tissue. Proper postoperative care is crucial for maintaining the surgical outcome.

If patients do not follow medical advice—for instance, coming into contact with water too soon, overusing the eyes, or experiencing external eye trauma—this may lead to decreased vision. Patients should seek timely medical attention, undergo professional examinations to determine the exact cause, and follow the doctor's instructions for appropriate treatment and adjustments.