Why is there a “cumbersome” examination before myopia surgery?

Abstract: for myopia surgery, most people pay attention to the surgery itself. In fact, the myopia surgery technology itself has developed to the present. The surgical skills, safety assurance, experience value and surgical equipment have developed to a very high level. More attention should be paid to “preoperative examination”

myopia surgery is a surgery based on human eyes. More than a dozen safety checks are required before surgery. Surgery can be accepted only after passing the preoperative check. Therefore, preoperative check is also known as the “umbrella” of myopia surgery!


for myopia surgery, most people focus on the surgery itself. In fact, with the development of myopia surgery technology, the surgical skills, safety assurance, experience value and surgical equipment have developed to a high level. More attention should be paid to “preoperative examination”. It can be said that preoperative examination is the “lifeline”, It is a “safety guarantee”, which can help judge “whether surgery can be performed” and “how the postoperative effect is”. The strict preoperative examination of


can not only ensure the safety of myopia surgery, but also meet the “personalized and high standard vision needs”, and the “cumbersome” examination can ensure the safety and effect of patients’ surgery to the greatest extent and to the greatest extent. Introduction to preoperative examination of

myopia surgery:

1 Visual acuity: naked visual acuity, wear glasses to correct visual acuity.

  2. Intraocular pressure test: measure the internal pressure of the eyes and eliminate abnormal intraocular pressure.

  3. Ocular a-ultrasound: it can measure the length of the eyeball before and after, and judge the type of myopia.

  4. Corneal topography: check the refractive state of corneal surface.

  5. Mydriatic optometry: more accurately check the refractive state of the eye, that is, the degree of myopia and astigmatism.

  6. Comprehensive optometry: comprehensively analyze the refractive function of the eye and predict the postoperative visual acuity.

  7. Corneal thickness measurement: measure the corneal thickness in the central and peripheral areas of the cornea, and exclude those with too low thickness.

  8. External eye examination: check for Eyelid Diseases, strabismus and eye movement disorders.

  9. Slit lamp examination: check the conjunctiva, cornea, lens, anterior chamber and vitreous in detail, and eliminate possible eye diseases, including conjunctivitis, keratitis, glaucoma, cataract, vitreous opacity, etc.

  10. Tear film rupture time test: it can correctly analyze the tear secretion and distribution function, eliminate dry eye and prevent dry eye after operation.

  11. Fundus examination after mydriasis: understand the fundus situation in detail. If the fundus is bad, it needs treatment, or corneal surgery cannot be selected.

  12. Oculuspentacam – examination of anterior segment analysis and diagnosis system: analyze the anterior segment, including the normal structure and state of cornea, and exclude possible corneal lesions and other structural abnormalities.

  13. Visual field examination: according to the intraocular pressure, check if necessary to eliminate glaucoma.