Astigmatism is a common refractive error caused by an irregularly shaped cornea or lens, which prevents light from focusing properly on the retina. This leads to blurred or distorted vision at both near and far distances. Toric contact lenses are specifically designed to correct astigmatism by accommodating the unique shape of the eye, offering clear and stable vision.
What Are Toric Contact Lenses?
Toric lenses differ from standard spherical lenses in their shape and functionality. While spherical lenses have a uniform curve across their surface, toric lenses feature a more complex design with different curvatures along different axes. This allows the lens to correct the uneven refraction caused by astigmatism.
Toric lenses also incorporate stabilization features to ensure they remain properly aligned on the eye. These designs may include weighted edges or thin-thick zones, preventing the lens from rotating and ensuring that the corrective power is consistently applied to the correct part of the cornea. They are available in both soft and rigid gas permeable (RGP) materials, providing flexibility based on the wearer’s preferences and prescription needs.
Who Are Toric Contact Lenses Good For?
Toric contact lenses are ideal for individuals with mild to moderate astigmatism who want the convenience and freedom of contacts over glasses. They are also an excellent option for active lifestyles, offering stable vision during sports and physical activities.
Patients with high astigmatism or complex prescriptions may benefit from custom-made toric lenses to ensure the best fit and optimal visual performance. Additionally, toric lenses are available in various formats, including daily disposables, biweekly, and monthly wear, catering to different preferences and schedules. Multifocal toric lenses are also an option for those with both astigmatism and presbyopia, allowing correction for near and far vision in one lens.
The Fitting Process for Toric Lenses
A precise fitting is essential for toric lenses to perform effectively. During a contact lens exam, your eye care provider will measure your corneal shape, assess the severity of your astigmatism, and evaluate tear film quality to recommend the best toric lens type for you. With proper care and a tailored fit, toric lenses offer astigmatism patients a reliable and comfortable solution for clear, uninterrupted vision.