Transepithelial photorefractive keratectomy (trans-PRK for short) is an advanced laser surgery procedure that corrects vision defects. In most cases, the cause is a severe curvature of the cornea.
Here you can find more information and trans-PRK specialists and centers that use this laser procedure.
Trans-PRK is a special laser procedure in ophthalmology in which doctors remove and smooth the surface of irregularities in the cornea. The underlying corneal stroma is also removed with an excimer laser.
Unlike PRK, trans-PRK does not require the doctor to remove the corneal epithelium by hand. No mechanical manipulation of the cornea is necessary for trans-PRK, as both surgical steps are performed using a laser.
Trans-PRK is the successor to PRK, the oldest laser eye surgery method @ Vadim /AdobeStock
Trans-PRK is suitable for people with:
Trans-PRK is mainly used for short-sightedness (up to -6 diopters) and astigmatism (up to 5 diopters). The procedure is also possible with existing presbyopia. The trans-PRK specialists surgically adjust one eye for distance vision and the other for near vision.
The following conditions are not suitable for trans-PRK:
Trans-PRK is usually performed as an outpatient procedure. The patient is given a mild sedative and eye drops beforehand, which anesthetize the eye locally. Eyelid retractors are used to ensure that the eye remains open.
The laser is used to remove the corneal epithelium and underlying tissue in a single step.
In total, trans-PRK specialists only need a few minutes for this laser operation.
Health insurance companies do not usually cover the costs of operations to correct defective vision. This is also not the case with trans-PRK. The costs for this procedure are in the low four-figure range per eye.
Patients should therefore clarify in advance which services are included and whether additional costs are incurred for follow-up examinations.
The healing process after trans-PRK is crucial for the success of the operation. The corneal epithelium regenerates over the first three to four days.
This process is often associated with pain, as the free nerve endings in the cornea are irritated after the procedure. To protect the eye and support the healing of the cornea, patients wear contact lenses for the first few days .
There is often a deterioration in vision shortly after the operation. However, this is a consequence of the laser irradiation. The deterioration disappears again within the first six weeks.
If there is no or insufficient improvement in vision, a follow-up operation is necessary.
As with any operation, there are also risks with trans-PRK, such as
As a general rule, the more frequently major corrections are required, the higher the likelihood of complications.
The choice of specialist is crucial for the success of trans-PRK. Trans-PRK specialists in the field of ophthalmology and refractive surgery are responsible.
Above you will find a list of selected specialists and clinics that specialize in this procedure.
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