Lens Implants / Toric
Toric IOLs for the Correction of Astigmatism
Astigmatism is an eye condition that affects more than 50% of the population. In fact, the majority of patients undergoing cataract surgery today have measurable levels of astigmatism.
Corneal astigmatism is simply a condition that causes blurred or double vision due to an irregular shaped cornea, the outer part of the eye where light first passes through. In patients who have astigmatism, their corneas are shaped more like a cone than a circle, and this irregular shape causes the light rays to not properly focus on the retina, or back portion of the eye. Because these light rays are skewed, people with astigmatism need prescription glasses to correct this condition.
In the past, patients undergoing cataract surgery who had pre-existing astigmatism prior to the procedure had no way of having it surgically corrected. While some surgeons were able to reduce the need for reading glasses, he or she would still have to wear glasses or contacts.
Fortunately, Toric intraocular lenses (IOLs) are now available that can permanently correct astigmatism. Called Toric IOLs, these lenses are designed with a specific shape that counterbalances the irregularity that causes the astigmatism in the first place. Thanks to their unique design, Toric IOLs are designed to refocus light rays as they pass through the lens and position them properly and in focus on the retina. The result is a permanent correction of your astigmatism, along with a complete restoration of your distance vision, much like a traditional IOL.
For patients who elect this option prior to surgery, you will undergo a full vision analysis at Thurmond Eye Associates. Our doctors will then customize a treatment option that includes a Toric IOL engineered to provide you with superior distance and intermediate vision will be inserted into your eye. This procedure is designed to eliminate any astigmatism and give you clear distance vision. The vast majority of patients do not need to wear glasses for most normal activities, but you will need to wear glasses for up close viewing tasks such as reading.