TransPRK (surface ablation)
Laser surface ablation is regaining popularity with ophthalmologists, particularly in cases of eye dryness or abnormal cornea. When lasik cannot be performed safely, we then turn to TransPRK.
The surface treatment TransPRK is the most advanced version of surface treatments as LASEK and PRK. It works without the need to prepare the cornea. Here, the SCHWIND AMARIS excimer laser removes tissue (fig. 1) through the regenerative surface layer of the cornea (fig. 2). The surface layer of the cornea regrows (fig. 3)
The TransPRK from SCHWIND is the only surface treatment where the eye doesn’t require contact with an instrument. Furthermore, the epithelium is removed more precisely and more easily than ever before.
For the last few years, the quality of the surface following an Excimer laser treatment has allowed to obtain similar results without increasing the risks.
The addition of a medication at a low concentration (Mitomycine C) during thirty or so seconds literally eliminates risks of haze. The same procedure can be used in complex re-treatment cases, such as:
- Cornea too thin;
- Abnormal topography;
- High myopia;
- Epithelial abnormalities or surface irregularities;
After surgery, the patient will wear a bandage contact lens for at least 48 to 72 hours in order to reduce the postoperative discomfort and the use of eye-drops will be necessary for a few weeks. The visual acuity might be difficult during the first weeks following the surgery.
A surgery is a surgery! Side effects may occur and complications are always a risk… but they are rare.
Your eyes may be more sensitive to intense light during the stabilization period (from one to three months).
You may see halos or stars around lights at night following a laser treatment.
Vision may fluctuate during the day until complete stabilization (in average, 3 months after surgery).
Regression (tendency of the eye to bounce back toward its original shape) may happen during the stabilization period and is related to the individual healing of the eyes. An enhancement procedure may be considered after 6 months if the surgeon thinks it is appropriate.
A 5-10 days convalescence may be needed.
Patient could start driving after 5 days.