If you have astigmatism and are planning cataract surgery, you’ll likely hear about Toric Intraocular Lenses (IOLs). These lenses are specifically designed to correct astigmatism during cataract surgery, offering you the chance for clearer, sharper vision — often without the need for glasses afterward.
What is Astigmatism?
Astigmatism is a common condition where the cornea (the front surface of the eye) is irregularly shaped. Instead of being perfectly round like a basketball, the cornea is shaped more like a football, causing blurred or distorted vision at all distances.
When you have astigmatism and undergo standard cataract surgery with a regular (non-toric) IOL, the astigmatism remains, meaning you’ll still need glasses or contact lenses afterward to achieve sharp vision.
How Do Toric IOLs Work?
Toric IOLs have special built-in correction to counteract the irregular shape of your cornea. They are carefully aligned during surgery to neutralize astigmatism and provide clear distance vision. If the alignment is perfect, patients often achieve excellent unaided vision for driving, watching TV, and daily activities.
Advanced robotic and laser technologies (like FLACS) can help ensure precise placement of the toric lens, maximizing your results.
Pros of Toric IOLs
1. Astigmatism Correction:
Corrects corneal astigmatism at the time of cataract surgery, offering clearer, more stable vision.
2. Reduced Dependence on Glasses:
Many patients no longer need glasses for distance vision after surgery.
3. Customizable Vision Options:
Toric lenses are available in monofocal, multifocal, and EDOF designs, giving you choices based on your visual needs.
4. Long-Term Clarity:
Once placed correctly, the toric correction is permanent.
Cons of Toric IOLs
1. May Still Need Reading Glasses:
Unless combined with a multifocal or EDOF design, toric IOLs typically correct distance vision only.
2. Precision Is Critical:
Even slight rotation of the toric lens can affect results. However, modern surgical techniques greatly minimize this risk.
3. Higher Cost:
Toric IOLs are considered “premium lenses” and may not be fully covered by insurance.
Who Should Consider Toric IOLs?
- Patients with moderate to high astigmatism,
- Those who want clear distance vision with minimal glasses dependence,
- Active individuals who value visual sharpness for driving, sports, and outdoor activities.
If you have astigmatism, choosing a toric IOL during cataract surgery can dramatically improve your vision and your quality of life.