Cataract Phaco Surgery with TORIC lens
What is astigmatism?
Astigmatism is a common refractive error that occurs when the cornea or lens of the eye has an irregular shape, causing blurred or distorted vision at all distances. Instead of being perfectly round like a football, the cornea or lens may be shaped more like a rugby ball, resulting in light rays focusing on multiple points in the eye rather than a single point on the retina.
How common is astigmatism in the general population?
Astigmatism is quite prevalent in the general population. Studies have shown that approximately 30% to 60% of people have some degree of astigmatism, with varying severity. It can occur at any age and may change over time, often appearing in combination with other refractive errors such as nearsightedness (myopia) or farsightedness (hyperopia).
What are the advantages of Toric IOL?
Toric Intraocular Lenses (IOLs) offer several advantages for patients with astigmatism undergoing cataract surgery:
1. Correcting Astigmatism: Toric IOLs are specifically designed to correct astigmatism along with cataract removal. By addressing both conditions simultaneously, patients can achieve clearer vision without relying on glasses or contact lenses.
2. Improved Visual Quality: By reducing or eliminating astigmatism, Toric IOLs can improve the quality of vision, enhancing contrast sensitivity and reducing glare and halos, especially in low-light conditions.
3. Reduced Dependence on Corrective Lenses: Many patients find that after Toric IOL implantation, they have reduced dependence on glasses or contact lenses for both distance and near vision tasks.
If you have corneal astigmatism, Toric IOLs are an excellent option to reduce your dependency on glasses at distance. If you also wish to be spectacle free for near, know your IOL lens options.
Are there alternatives to Toric IOL for managing astigmatism during cataract surgery?
Yes, there are alternative options for managing astigmatism during cataract surgery, including:
1. Limbal Relaxing Incisions (LRIs): LRIs are small, precise incisions made in the cornea to reshape its curvature and reduce astigmatism. These incisions can be made manually with a blade or using femtosecond laser technology.
2. Excimer Laser Surgery: In some cases, patients may undergo LASIK or PRK (photorefractive keratectomy) surgery to correct astigmatism before or after cataract surgery. These procedures reshape the cornea to correct refractive errors, including astigmatism.
3. Astigmatic Keratotomy (AK): AK involves making precise arc-shaped incisions in the cornea to flatten its steeper axis and reduce astigmatism. This technique may be performed manually or with the assistance of a laser.
It’s essential to discuss your options with your eye doctor to determine the most suitable treatment approach based on your individual needs, lifestyle, and eye health.
