WHAT DOES THE REFRACTIVE LENS SURGERY TECHNIQUE INVOLVE?
The surgical technique carried out is the same as that used in cataract surgery (phacoemulsification). It involves replacement of the crystalline lens with an intraocular lens with the necessary power to correct the patient’s refractive defect (myopia, hypermetropia, astigmatism or presbyopia). The only difference between this surgery and that performed on cataracts, is that in this case the crystalline lens is healthy. The sole purpose is to correct the patient’s refractive defects.
The difference with patients with a
a clear crystalline lens is that they manage to enjoy good vision with spectacles or contact lenses. This is not the case with people affected by cataracts, whose gradual loss of sight can only be corrected through surgery.
It is important to add that this surgery must be performed on both eyes to obtain the best possible result. This ensures that both eyes work together and three-dimensional vision functions correctly. As a precaution, one eye is operated on first and the second eye is operated on a week later.
WHO IS THIS TYPE OF SURGERY FOR?
This surgery is performed on patients over the age of 45, who already have problems with their near vision, in other words, who are affected by presbyopia and have a healthy crystalline lens. The main aim of patients considering this type of surgery is to stop depending on the use of spectacles for different requirements: distant, near or both cases.
This surgery is used in cases where no other refractive method (LASIK, phakic lenses, etc.) is suitable because of the patient’s high number of dioptres or other contraindications.
WHAT ARE THE OPTIONS?
There are many options for performing refractive lens surgery, depending on each patient’s eye and their objectives. A personalised examination must be performed to obtain all of the technical data and to customise the surgery according to each patient’s priorities.
Today there are many intraocular lenses which can be implanted. The patient should explain to the ophthalmologist the tasks they usually perform and the times when they use their vision most (distant, near, etc.). Premium lenses enable accurate sight at different distances and also allow users to do without spectacles on most occasions.
- Aspheric intraocular lenses
- With filters