Indications of laser surgery:

① 18-50 years old;

② Myopia

Astigmatism < 5.0D hyperopia < 6.0d.

③ Myopia is stable within 2 years;

④ The best corrected visual acuity of lens is above 0.5;

⑤ There are no eyes that affect wound healing.

Side effects of laser surgery

① insufficient refractive correction;

② Refractive regression phenomenon;

③ Halo phenomenon;

④ corneal opacity;

⑤ Dim vision decreased;