Vision correction operations are mainly performed to eliminate or reduce significant disorders associated with the anatomical structure of the eye. The ophthalmologists are guided to the operation after detailed examinations, including examination of the fundus, ultrasound of the eye, evaluation of the retina, etc.
Types of operations for vision correction
Methods of surgical correction of vision can be divided into the following main groups:
1. Operations on the cornea, performed to change its optical power and the length of the optical axis of the eye:
- excimer laser correction;
- keratocoagulation;
- keratotomy;
- implantation of corneal rings.
2. Intraocular operations aimed at changing the optical power of the lens with replacement or addition:
- implantation of phakic intraocular lenses;
- removal of the lens with the implantation of intraocular lenses.
3. Operations on the sclera - the installation of scleral implants to form an additional scleral volume and change the length of the optical axis of the eye.
What is the procedure for vision correction?
Operations to eliminate visual impairment are performed using local anesthesia . In this case, the eyelids are fixed by a special expander to prevent blinking, and the manipulations themselves are performed under a microscope. The operation, as a rule, takes several minutes, after which a sterile dressing is applied to the eye, and the patient receives further instructions regarding the recovery period.
Contraindications for vision correction
The operation can be excluded in the following cases:
- congenital diseases of the cornea and lens;
- collagenoses;
- acute and chronic eye diseases with relapses;
- glaucoma ;
- mental pathologies;
- progressive ametropia, etc.
Operations for vision correction with astigmatism
The most effective method of correcting vision with astigmatism is the laser operation Super LASIK. In very difficult cases, and when laser correction can not be applied, resort to eye microsurgery with implantation.