1.What cases are not suitable for keratomileusis? A: It is generally considered that the following cases are not suitable for wearing keratoplasty: 1) parents have certain misconceptions about keratoplasty treatment, such as unrealistic belief that the method can cure myopia; 2) expectations are too high, and the actual effect of keratoplasty lenses do not match; 3) the presence of eye diseases, such as serious ocular surface diseases, infection, inflammation and other eye diseases; 4) patients with significant intraocular astigmatism 5) Patients with large pupils, especially those with large pupils at night; 6) Patients who are young, have poor self-care and poor personal hygiene; 7) Patients who are unable to complete follow-up visits and have poor compliance with fitting and follow-up visits. 2. What are the advantages of keratomileusis? A: (1) No trauma. (2) easy to use, only need to wear every night when sleeping; (3) no special age limit; (4) reliable effect, the effect of correcting myopia is visible, field trial 1-3 hours, can reduce myopia 100-200 degrees, naked eye vision will be significantly improved; (5) keratomileusis can effectively control the development of myopia. Delay myopia deepening, control eye axis elongation, which is the clinical conclusion of ophthalmology and optometry for many years. 3, why should I choose to wear corneal contact lenses both day and night? A: In terms of modern corneal contact lens development, night-wear type corneal contact lens has become the mainstream. The initial corneal contact lenses are day wear type, mainly because the material technology development can not meet the requirements of night wear. With the development of material technology, the material of corneal contact lens can fully meet the requirements of night wear. Night-wear type corneal contact lenses have less impact on people’s life and have a shaping effect on the cornea, which can more effectively control the development of myopia. Day wear type has a large correction space and can correct myopia below -25.00D and astigmatism below -6.00D. 4.What are the success factors of keratoconus fitting? A: The success factors of keratoconus fitting are the following: 1) suitable wearer, i.e. the wearer must meet the indications of keratoconus; 2) perfect and accurate examination; 3) professional and experienced fitting personnel; 4) good positioning and mobility in the fitting of the lens; 5) good compliance of the wearer, etc. 5.What is the process of fitting my child with keratoplasty lenses in the hospital? A: 1) Parents can first go to the ophthalmology department to consult and understand the knowledge of keratoplasty; 2) necessary examinations before fitting: including naked eye vision, corrected vision, slit lamp microscopy, intraocular pressure, refraction, fundus, corneal curvature, corneal topography, ultrasound corneal thickness, A-axis, tear test; 3) try on the lenses: observe the fitting status, visual acuity, refraction, child’s tolerance, any adverse reactions 4) Formal prescription: after the prescription is confirmed, sign the prescription consent form and pay for the prescription; 5) Pick up the lenses and receive instruction from the optometrist: learn to take off and wear the lenses, master the correct cleaning and storage methods; understand the precautions, adverse reactions, care routine, emergency treatment, etc.; 6) Regular review as required: for the first time, we require: a) overnight wear of the lenses b) the first week: at least once; c) the first month: once every week; d) the second month: once every two months.