LASER VISION CORRECTION
DIOPTER CORRECTION WITH PHAKIC LENSES
BLEPHAROPLASTY – EYELID REJUVENATION
AGE-RELATED DIOPTER CORRECTION
The modern approach to cataract operation shortens the time of the patient’s hospitalization from seven days to one day on the average (the so-called one-day surgery), thus by far reducing the costs of hospital treatment, and making the overall recovery of the patient much quicker. After a few days the patient may go back to his/her work and normal life.
The cataract operation is nowadays one of the safest and most commonly performed operative procedures in the world. Thanks to a small incision, the wound does not need to be stitched. The operation is performed in topical anesthesia (local anesthesia by applying drops); it is painless and lasts for less than 10 minutes.
There are numerous advantages of this method:
The final refraction, i.e. the post-operative diopter at near distance, is determined within two to four weeks after the operation, unlike the previous methods when this took three and more months.
HOW DOES THE CATARACT DEVELOP?
The cataract is one of the most common diseases of the persons of advanced age. It appears with 70% of persons older than 75 years, and is a consequence of natural aging process which leads to the blurring of the eye lens.
Cataract may also be a consequence of a trauma, a metabolic disease (diabetes, galactosemia), application of drugs (corticosteroids) and may also develop as part of some syndromes (e.g. the Down syndrome). It is manifested by blurring of the vision, the loss of contrast, and glaring with strong light. In some cases of initial cataract, vision can be improved with the glasses as the swelling of the lens causes myopization (minus diopter) of the eye. With time, with the progression of blurring of the lens, the glasses cannot be of use any more, so the only possible treatment that remains is the cataract surgery.
The advantages of the modern cataract surgery is a smaller incision, smaller post-operative astigmatism, fewer eye complications and faster vision recovery. After a few days already the patient may go back to his/her work and normal life. Cataract is operated today when the patient is not subjectively satisfied with his/her vision with the glasses, and we do not wait for the cataract ‘to mature’ as was the case with the previous operative proceedings. See the most commonly asked patients’ questions.
VISION CORRECTION BY PHACO
Besides for the cataract, PHACO is used today in the refractive surgery for vision correction (diopter). The lens, that does not have to be cloudy, is phaco-emulsified and an intraocular lens of a certain diopter is put in its place in order to achieve emmetropization, i.e. a state where the patient does not need the glasses or contact lenses.
The choice of an optimum lens for every patient depends on the health of the eye and the patient’s wish. Classic intraocular lenses are monofocal lenses, which, as the name suggests, have a single focus and enable the patient, after the surgery, to see well at distance without the glasses, but has to wear the reading glasses for near distance (or vice versa, if the patient wishes so). If, before the surgery, the patient had astigmatism (a dioptric defect of the eye which is a consequence of a deviation from the spherical curvature of the cornea) or if astigmatism was induced by a surgery, after the surgery the patient will have to wear both distance and reading glasses. Standard monofocal lenses do not solve the problem of nearsightedness or astigmatism.
With the progress of the cataract surgery technology, more modern intraocular lenses developed too; on the other hand, there are more and more patients who, after this surgery, want to have good vision at all distances without wearing glasses. Multifocal lenses have several focuses and enable the patients who have undergone the cataract surgery good vision at different distances without wearing glasses.
The latest generation of multifocal lenses includes trifocal lenses which, besides good vision at distance and up close, also provide good vision at medium distance, which is especially important for the patients who spend a lot of time working at the computer. Trifocal lenses imitate the natural accommodation enabling the patient good vision at all distances (distance, proximity and medium distance), thus allowing full independence of the glasses.
Besides to the cataract patients, multifocal lenses may be implanted to the patients who do not have cataract, but wish to be rid of distance or reading glasses. The candidates for such an operation are persons older than 45, who, besides wearing glasses, do not have other eye diseases. After the surgery, the patients who have been implanted multifocal lenses are able to see the light circles around the light source in the dark (haloes) or glares at a strong light which are caused by lens design, however, these problems are reduced with time and fully disappear. See the most frequently asked questions by the patients.
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Bulevar Desanke Maksimović 12,
78 000 Banja Luka, BiH
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