Toric IOL Toric lenses are premium intraocular lenses that correct astigmatism, nearsightedness, or farsightedness. Astigmatism is a common eye problem that occurs when the shape of the eye is more oval than round.  This causes a blurry, distorted view. Toric lenses can help restore crisp, clear distance vision for cataract patients with astigmatism.  Toric IOLs correct astigmatism because they have different powers in different parts of the lens. Alignment markings are placed on the side of the lens during manufacturing.  These markings enable the surgeon to adjust where the IOL gets placed. This is important because it’s how the surgeon corrects astigmatism. Toric lenses do not correct for close vision, so reading glasses are still needed. More advanced options can offer correction for distance and intermediate (computer use) vision.