I. Corneal Thickness Measurement: A corneal thickness meter is used to measure the distance between the two peaks of the two reflections of the ultrasound wave, and the thickness of the cornea is calculated. Corneal thickness measurement is a more important determinant before laser surgery.
Second, the external eye examination: check the dominant eye. The dominant eye, also known as the dominant eye, is the eye that chooses the direction of the line of gaze, the dominant direction of gaze, in both eyes.
Three, tear film break-up time measurement (BUT): the normal time is 15-45 seconds; less than 10 seconds is pathological. The purpose of this test is to rule out dry eye.
Fourth, slit lamp examination: observation of the eyelids, lacrimal apparatus, tears, conjunctiva, cornea at all levels, iris, pupil and part of the lens, to rule out external eye disorders affecting optometry and refractive surgery.
Fifth, corneal topography: used to analyze the cornea in detail, the anterior surface, corneal curvature, can confirm that can not be operated cone cornea, but also check the corneal thickness, pupil size, astigmatism degree.
Ophthalmic full femtosecond surgery can go to the Sigma Eye Hospital to see. Beijing Sigma Lin Shunchao Eye Hospital (referred to as: Beijing Sigma Eye Hospital) is one of the medical institutions under the Hong Kong Sigma International Eye Medical Group (03309.HK), which is a wholly-owned second-class ophthalmology specialty hospital in Hong Kong. The hospital has strong medical strength, with a strong medical team constructed by renowned ophthalmologists from Beijing, Hong Kong and foreign countries, the continuous introduction of international imported equipment, and the introduction of four major Hong Kong-style medical service models.
The hospital currently offers nine subspecialties, including: refractive orthopedics, cataract, strabismus and amblyopia, pediatric ophthalmology, glaucoma, vitreous and retina, cornea and ocular surface, orbital, dry eye, and medical optometry, providing patients with one-stop Hong Kong-style ophthalmic medical services covering the whole field of ophthalmology, ranging from the basic ophthalmology health checkups to optometry and dispensing glasses, and from special checkups and specialized diagnosis and treatment to various types of eye surgeries and post-operative rehabilitation. We provide one-stop Hong Kong-style ophthalmology services. There are also specialists from Tongren, Xiehe and Shouda who come to sit in the clinic.