** Eye weakening or reduced vision after LASIK ** Refractive surgery usually has permanent results, but re-weakening of the eye or loss of vision after LASIK may occur in a small number of patients and under certain circumstances. In some patients, after the LASIK operation, some of the number of the eye may remain or it may reappear after some time. Vision after surgery **- Complications after surgery:** If the patient gets an eye infection after the operation, the complication caused by the infection may be poor vision. One of the important factors in the return of vision defects can be improper care after refractive surgery. **-Diabetes:** Although the operation of refractive errors is performed in diabetic patients who have controlled blood sugar, but after eye surgery due to diabetes, a person may suffer retinal damage and loss of vision and weakness. After the age of 40, a person experiences progressive presbyopia, and in this case, the focusing power of the eye lens decreases in close vision, which causes problems such as blurred vision.*** **Cataract**, which usually occurs with age, can be one of the factors that weakens the eye after LASIK surgery. **-Dry eyes:** Dry eye can cause changes in vision or reduced vision after surgery. **- Flap problems after LASIK operation:** But there are also factors that may cause a decrease in vision after LASIK surgery in the short term. These factors include tearing or movement of the LASIK flap and not placing the flap in its proper place. Usually, the process of improving vision in LASIK surgery is progressive, and the patient's vision should improve day by day and the patient should see more clearly. did Finally, it should be noted that visual impairment in refractive surgery and removal of glasses is one of the rare side effects.

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