Keratoconus is an optical condition in which the cornea i.e., the transparent tissue at the front of the iris, shows a greater curvature in one area and is often thinner.
This can be accompanied by blurred and distorted vision, due to the fact that the light is not focused properly in the depth of the eye, often showing myopia and abnormal astigmatism.
Contact lenses are the main solutions which correct vision in such cases, and they should have a personalized design for everyone. Different types of lenses are ideal for different people or types of keratoconus. The optometrists who apply such lenses inform the patients of the different solutions, providing the best fit for their case and needs.
The best types of contact lenses for keratoconus in 2021 are the following:
- Scleral lenses: These lenses have a larger diameter than the standard soft lenses, which are applied to the white of the eye without touching the cornea, creating a stable optical surface that corrects sharp visual aberrations and distortions. For people who are participating in sports and generally have an active daily life, we recommend the EPSILON scleral contact lenses, which are the most popular choice for keratoconus.
- Personalized soft lenses: These are specially designed which include astigmatism treatments, and due to the special design in their optical zone, they significantly reduce the conical shape of the cornea. The advanced soft keratoconus lenses DELTA CONUS in most cases offer the same quality of vision as the scleral lenses. Also due to the choice of materials, they can be frequently replaced, usually within three to six months.
- Scleral air permeable corneas: This is the type of lens that has been used most frequently, because it used to be the only type of contact lens that could correct keratoconus, for several decades. The size of the lenses is smaller than the cornea and combined with its stable construction material, it provides good visual acuity and at the same time provides continuous alternation of tears under the lens. Its reduced stability, compared to other types of lenses, increases the feeling of a foreign body on the eyelids, making the its adaptation more time consuming to new users. Such lenses are DUALASCON.