Contact Lenses Fittings
At Vespa Vision Centre, our optometrists specialize in providing top-notch contact lens fittings in Windsor. Whether you're new to contact lenses or seeking an upgrade, we're here to meet your specific visual needs!
Benefits of Contact Lenses
Contact lenses have many pros and cons. Most patients who are contact lens wearers, find that correcting their vision with contacts is more convenient than glasses. One of the benefits of wearing contact lenses that not many are aware of is the use of contacts in managing corneal disorders. At Vespa Vision Centre, we believe in using the most up-to-date technologies to serve our patients better.
Managing Corneal Disorders for Clearer Vision
Patients with corneal disorders, often due to thinning from degenerative conditions like Keratoconus experience distorted vision not easily corrected by glasses or regular contacts. The misshapen cornea induces significant astigmatism, scattering light within the eye and reducing vision quality. Correcting this astigmatism with glasses can be challenging, sometimes leading to legal restrictions on driving due to reduced vision (usually in the 20/40 to 20/100 range). Specialty contact lenses can potentially improve vision to 20/20 in such cases.
Specialty Contact Lens Options
Specialty contact lenses include Rigid Gas Permeable (RGP), thicker soft lenses, and hybrid lenses (rigid center with soft periphery). Recent changes in RGP design have shifted away from traditional corneal lenses, known for providing excellent vision but often uncomfortable due to sensation upon blinking. Scleral lenses, which vault over the entire cornea and rest on the white part of the eye (sclera), offer greater comfort. Scleral lenses allow for longer, more comfortable wear throughout the day compared to corneal RGP lenses.
These lenses significantly enhance vision compared to glasses and standard contacts by concealing the irregular corneal surface with a new spherical interface. When applied, they create a tear reservoir, filling gaps between the cornea and lens, and allowing light to focus sharply. This eliminates light scattering, resulting in improved vision quality.
The RGP shown to the left is known as a lid attached fit. This is because the lens sits under the lid and the lid aids in stabilizing the position of the lens. In some patients, a lid attached fit is not possible due to their lid anatomy so a central corneal fit must be done. As mentioned before, there is a sensation of blinking with this lens design but many patients can grow accustomed to this.
Scleral lenses work similarly, and as can be seen from the cross-section to the right the scleral lens vaults the entire misshapen cornea and the resulting gaps are filled with tears. This allows light to be focused more finely and results in better quality vision. The lens is also noticeably larger than the corneal lenses. As can be seen it rests on the white portion of the eye, the sclera. This results in improved comfort for the patient.
Transform Your Life with Specialty Contact Lenses
Specialty contact lenses can provide a huge change to a person's lifestyle. There are many other uses of specialty contacts than we have mentioned here. If you feel that you would benefit from these lenses or are interested in more information, you may book an appointment online with us!