Since 1993, when the first laser refractive surgery was performed in Cape Town, refractive eye laser surgery has developed in leaps and bounds, and laser vision correction is safer, more stable and more predictable today with the CustomVue Individualized Laser Vision Correction by VISX.
CustomVue Individualized laser vision correction is an excimer laser technology, where a personal and unique laser vision correction is designed for each individual eye. Just like a fingerprint, each person’s vision is 100 percent unique to their eyes. Up until now, a -2.00 diopter treatment for two different people has been the same. But no two people’s corneal curvatures and aberrations are exactly the same, even if their prescriptions are the same. With the CustomVue System (wavefront guided technology), this uniqueness is taken into account when designing a personalized laser pattern, and no two “treatment prescriptions” are identical. It therefore makes sense that better results are expected for each individual with this system.
All CustomVue candidates receive a thorough diagnostic screening using special equipment. The Pentacam corneal topographer analysis the entire cornea and measures the corneal curvature and thickness. WaveScan-based digital technology determines the presence of pre-operative higher-order aberrations and unique imperfections in each individual’s vision. It produces a detailed map of the eye – much like a fingerprint. The information captured using the WaveScan technology is transferred to the laser, providing a new level of precision and accuracy. This new level of measurement provides 25 times more precision than with standard methods used for glasses and contact lenses.
During the ±20 minute procedure, the very superficial 50 microns of epithelium is removed to expose the deeper layers of the cornea. The laser is then performed (usually less than 30 seconds) and a bandage contact lens is placed on the eye for ± 1 week to protect the abladed area and to make the eye more comfortable.
A specific type of laser, with a very small spot size of 1 mm is used for the Customvue treatment. This is called a “flying spot laser”. An eye tracking system is also used to follow any small eye movements during the ablation. Iris registration technology replaces previous methods of attaining accurate alignment. It is the first fully automated method of aligning and registering wavefront corrections for Customvue treatments. It centers the treatment correctly, independent of changes in the pupil center from measurement to treatment. The laser uses a very small beam, which means that less energy is used to laser the cornea, resulting in more accurate ablations. This laser system is therefore safer, more predictable and more accurate.
WHO CAN BENEFIT FROM CUSTOMVUE WAVEFRONT-GUIDED PRK?
- Patients with large amounts of aberrations
- Patients with irregular astigmatism
- Patients with large pupils
- Patients with high myopia
- Patients with thin corneas
- Patients with dry eye conditions
- Patients who have residual refractive errors after previous refractive laser surgery, who’s corneas are too thin for Lasik surgery
Although the procedure is pain-free you will experience some discomfort and light sensitivity for the first few days after surgery. Your vision will also be blurry and fluctuate for two to four weeks following surgery. You will be seen regularly for follow-up and will have to take eye drop medication for about 3 months after surgery. After about 2 weeks most people have functional vision and at 4 weeks post-op most people have normal (20/20) vision.
For further information about CustomVue PRK surgery please contact The Tygervalley Eye & Laser Centre on 021 9100 300 or email@example.com