This corrects vision problems such as Myopia, Hyperopia and Astigmatism. While this treatment method is available at our Centre, it is not often used. Instead, one of the following customised treatment is used, depending on the needs of the individual eye.
Wavefront-Optimised LASIK
Wavefront-Optimised LASIK is a laser technique which creates a more natural shape of the periphery of the cornea, thus reducing the chances of the night glare effect and improving quality of vision. Almost everyone will benefit from this treatment as the lasered cornea becomes smoother and more natural in shape.
Wavefront-Guided LASIK
Wavefront-Guided LASIK treatment can correct the “higher order” aberrations, therefore allowing an improvement in vision quality. Higher order aberrations are irregularities of the eyes that degrade vision quality. Those with a large amount of these aberrations will benefit from this treatment.
LASIK XTRA
LASIK Xtra 是指激光手术和角膜胶原交联术的结合。
角膜胶原交联(CXL)是一种外科手术,用于增强薄弱的角膜。 LASIK Xtra™
一个以紫外线和核黄素增强角膜交联结构的系统。
依照旧款仪器的原理而操作将近10年。
改良后的技术确保更短的治疗时间、更精准及一致的疗效和更安全的疗程。
可稳定角膜疾病,如圆锥角膜与角膜膨隆。
有助于增强角膜,适合近视度交高或角膜较薄的患者。
The Avedro KXL system
A newer system, the Avedro KXL system is now available for strengthening the cornea by cross-linking its collagen.
LASIK Xtra™ - better safety after LASIK
Besides cross-linking corneas with keratoconus (weak cornea disease), the Avedro KXL system has also been used in patients undergoing LASIK. This helps to minimise the weakening effects of LASIK on the cornea by strengthening it with cross-linking treatment. Corneas normally become thinner after LASIK because the excimer laser used removes tissue. This effect is more marked when higher degrees of spectacle power are treated. In a very small percentage of cases, this thinning causes the cornea to bulge forwards and become distorted in a condition called corneal ectasia.
The mechanics of LASIK Xtra™
Performing this addition to a normal LASIK procedure only adds an extra 3 minutes of time.
After the excimer laser has been used to reshape the cornea during a LASIK procedure, special cross-linking medication is applied to the cornea surface. The LASIK flap is replaced. The Avedro KXL system is then positioned over the cornea and the light is shone onto the cornea. This activates the medication in the cornea and cross-links the collagen fibres, making the cornea stronger.
Safety of LASIK Xtra™
The Avedro KXL is CE marked and thus approved for use throughout the European Union. It is also approved for use in Canada and Japan. Overall, cross-linking treatment did not affect the accuracy of the excimer laser in correcting spectacle power and the side-effects are similar to those who just had LASIK without cross-linking done.