Wearing contact lenses for many years, can you still do myopia surgery?

Abstract: for myopia surgery, detailed and systematic preoperative eye examination is very important. It can not only help doctors design the most suitable surgical scheme and lay the foundation for good postoperative effect, but also find out whether you are really suitable for laser correction surgery, predict the postoperative effect and ensure the safety of surgery to the greatest extent.

although whether to wear contact lenses is not the standard for myopia surgery, it is necessary to stop wearing contact lenses for a period of time before myopia surgery to ensure the accuracy of preoperative examination and surgery. Usually, before the examination, the soft spherical lens should be stopped for more than 1 week, the soft astigmatism lens and hard lens should be stopped for more than 3 weeks, and the corneal shaping lens should be stopped for more than 3 months. How do

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know whether they are suitable for myopia surgery?

myopia surgery, detailed and systematic preoperative eye examination is very important. It can not only help doctors design the most suitable surgical scheme for individuals and lay the foundation for good postoperative effect, but also find out whether you are really suitable for laser correction surgery, predict the postoperative effect and ensure the safety of surgery to the greatest extent. If you go to Baoding Xinshi hospital for myopia surgery, we will perform more than 20 preoperative examinations for you, mainly including:

1. Naked near and far vision

preliminary judgment of visual function

2. Subjective and objective optometry

examination of diopter

3 The best corrected visual acuity

predicts the best postoperative visual acuity

4. The eye position

excludes strabismus and examines esotropia

5. The main eye

examines the dominant eye of the person, and puts forward the basis for optometry results and surgical design.

6. The external eye examination

excludes external eye diseases, Such as trichiasis, eyelid entropion

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7. Slit lamp examination

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exclude eye active lesions

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8. Posterior pole and peripheral fundus examination

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exclude fundus diseases

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9. Intraocular pressure measurement

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exclude diseases such as high intraocular pressure and glaucoma

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10 Corneal thickness measurement

provides accuracy for surgery

11. Corneal topography examination

checks corneal morphology and excludes keratoconus

12. Visual field examination

excludes glaucoma and other diseases not suitable for eye surgery

13. Anterior cornea Posterior surface morphology and anterior segment measurement and analysis

to understand corneal morphology and exclude occult keratoconus

14. Contrast sensitivity and glare examination

to understand preoperative ocular visual quality

15. Corneal endothelium examination

to check the number and function of endothelial cells

16 Wavefront aberration examination

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personalized cutting design provides personalized scheme for surgery

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17. Ocular axis measurement

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measure the length of ocular axis before operation, understand the source of diopter and analyze the causes of postoperative refractive regression, and provide original data

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18. Tear function examination

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measure the amount of tear secretion, Understand lacrimal gland secretion function, judge dry eye condition

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19. Pupil diameter measurement, including pupil diameter

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in dark light, excluding excessive pupil. Design the size of the optical area during treatment to avoid postoperative glare

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20. Eye adjustment amplitude examination

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visual function examination

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excimer laser surgery is the best method to correct vision at present. Principle of

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: Excimer Laser performs refractive cutting on the stroma layer under the corneal flap, So as to reduce the corneal curvature of pupil area and achieve the purpose of correcting myopia. Myopia of 200 – 2000 degrees can be corrected Advantages of

excimer laser in the treatment of myopia:

① high accuracy ② light postoperative response ③ high safety ④ high stability ⑤ short operation time ⑥ high comfort ⑦ few sequelae ⑧ wide range of degrees.

excimer laser surgery is suitable for people:

① it is suitable for people over 18 years old ② the diopter is stable for more than two years ③ the annual optometry should not exceed 50 degrees ④ myopia is 100 to 2000 degrees, hyperopia and astigmatism are below 600 degrees.