Abstract: if the operation is reluctantly accepted, the early postoperative vision may also be ideal, but many complications may occur after 1 to 2 years, such as retinal detachment and conical cornea, which seriously damage the health of vision.
in recent years, more and more people suffer from myopia, and the trend of younger age is very obvious. With the development of technology, many people will choose surgery to treat myopia. What tests should be done before myopia surgery?
myopia surgery is not that everyone can do
for 30 seconds to take off their glasses, which is always very attractive for people with myopia. However, not all people with myopia can undergo excimer laser surgery, which has strict requirements for the choice of treatment targets. Experts say that some patients with myopia are often accompanied by some fundus diseases or other eye diseases. They are not suitable for excimer laser surgery. If
reluctantly accept the operation, the early postoperative vision may also be ideal, but many complications may occur after 1 to 2 years, such as retinal detachment and conical cornea, which seriously damage the health of vision. For example, myopia patients with more than 500 degrees are at greater risk after operation due to thin cornea; Myopia patients with trachoma and excessive eye secretion are easy to be infected during operation, and the symptoms of eye discomfort are more obvious after operation. Hospitals should strictly screen patients, and try not to do surgery if it is not suitable. However, there are indeed some irresponsible hospitals that operate on patients as long as they come, with economic interests as the first priority.
preoperative examination for myopia
1. Visual acuity examination: naked visual acuity and corrected visual acuity.
2. Anterior segment examination: measurement of pupil diameter, including cornea, conjunctiva, anterior chamber, lens and anterior vitreous segment.
3. Intraocular pressure examination: to exclude the possibility of high intraocular pressure and glaucoma. Monitor the changes of intraocular pressure before and after operation to prevent eye damage caused by postoperative hormonal high intraocular pressure.
4. Fundus examination: the fundus must be carefully examined with mydriasis before operation to eliminate fundus diseases such as retinal hole, detachment, degeneration and bleeding.
5. Diopter: whether the diopter is correct or not directly affects the surgical effect. Generally, computer optometry, retinoscopy optometry and subjective optometry are combined to accurately calculate the diopter. At the same time, the most appropriate diopter to be corrected was determined by comprehensively considering the patient’s occupation, age, corneal thickness and other factors.
6. Corneal thickness measurement: corneal thickness plays a decisive role in the selection of surgery and the design of cutting amount. The measurement of corneal thickness will enable the operation to obtain more accurate prediction results.