What are the methods for correcting refractive error?

Refractive error refers to the phenomenon that when the eye is not using accommodation, parallel light rays cannot form a clear image on the retina after passing through the eye's refractive effect. Therefore, we must treat the problem symptomatically based on the symptoms of refractive error.

1. Myopia treatment

Mild and moderate myopia can be corrected with moderately concave lenses. People with high myopia often feel that objects are too small, feel dizzy, and have difficulty seeing close objects after wearing glasses. The degree of glasses should be reduced as appropriate, or contact lenses can be worn. However, the latter can cause a series of corneal complications if not handled properly.

Laser surgery for myopia is what people often call "excimer laser surgery". It uses excimer laser to perform refractive cutting on the stromal layer under the corneal flap, thereby reducing the corneal curvature in the pupil area and achieving the purpose of correcting myopia.

When it comes to myopia surgery, many people are afraid that the recovery will be slow and will delay their work. Therefore, many myopia patients want to know how fast the recovery will be. The speed of vision recovery after laser myopia surgery depends on age, the eye's refractive adjustment ability, and the degree of myopia before the operation.

In general, young people and those with low myopia before surgery recover faster. In addition, vision for distant objects recovers earlier than vision for close objects (such as reading, looking at fine objects, etc.). Generally, you only need to rest for one or two days after the operation and then you can resume your normal life and work. However, during the process of postoperative vision recovery, attention should be paid to eye hygiene to avoid eye fatigue and discomfort.

2. Hyperopia treatment

Hyperopia does not require treatment if the vision is normal and there are no symptoms. If you have symptoms of visual fatigue or your vision has been affected, you should wear appropriate convex lenses for correction. Children with higher degrees of hyperopia, especially those with esotropia, should wear glasses as early as possible. As the eyeball develops, children's hyperopia tends to gradually decrease, so they need to have a check-up once a year so that the degree of their glasses can be adjusted at any time. In addition to wearing convex lenses for correction, you can also use contact lenses for correction.

3. Astigmatism treatment

Generally, mild and asymptomatic cases do not require treatment. Otherwise, cylindrical lenses should be used for correction. Concave cylindrical lenses should be used for myopic astigmatism, and convex cylindrical lenses should be used for hyperopic astigmatism.