Contact lens for Keratoconus:
What Are My Options?
Option 1: RGP Lenses
In some cases, keratoconus patients can achieve effective results by wearing rigid gas permeable (RGP) lenses. RGP lenses are hard contact plastic contact lenses that are better at retaining their shape and position in the eye than soft contact lenses. In virtually any patient, the result of this will be sharper vision correction than soft contact lenses can provide. Many people still prefer soft contact lenses, due mostly to the fact that they are more comfortable initially. However, for keratoconus or other conditions characterized by irregularly shaped corneas, soft lenses will mold to the same irregular shape as the cornea, rendering them unsuitable for treatment. RGP lenses can provide more stability in shape—though; they may still shift a bit when the patient blinks, especially in more severe cases of keratoconus.
Option 2: Rose K Lenses
Realising that the problem with traditional contact lenses was that they did not fit unusual corneal shapes or mimic the eye shape well, he sought to develop a contact lens that would be more comfortable for patients, be easier to fit and provide better vision to those with the condition.
Paul Rose began developing the ROSE K keratoconus lens in 1987. After testing 700 lenses and 12 different designs, he produced a set of 26 lenses from which all patients could be fitted.
ROSE K2 lens with front surface aberration control providing superior vision.
ROSE K2 Irregular Cornea (IC) lens for larger areas of corneal distortion.
ROSE K2 Post Graft (PG) lens for post corneal surgical cases.
ROSE K2 NC lens specifically for nipple cones.
Option 3: Scleral Lenses
While RGP lenses are a workable solution for some individuals who suffer from keratoconus, they are rarely our first recommendation at Cornea Centre in Ahmedabad. When it comes to eyes that are difficult to fit with contact lenses—keratoconus included—our first strategy is almost always to try scleral lenses. Instead of sitting on the cornea itself, scleral lenses have a wider diameter and sit on the sclera, or the white of the eye. The design of the lenses then allows them to vault over the cornea, leaving a chamber of tears between the surface of the eye and the lens itself. The result is a much more comfortable fit for someone with keratoconus, not only because the lens isn’t touching or irritating the cornea but also because the reservoir of fluid helps hydrate the eye and keep it well-lubricated and healthy.
The other factor that sets scleral lenses apart for keratoconus treatment is that they can provide visual correction even in a very irregularly shaped cornea. Most contact lenses need to mimic the shape of the ocular surface exactly (or at least closely) to deliver an effective visual correction. Because scleral lenses vault over the entire cornea, they effectively render any irregularities in corneal shape irrelevant. These lenses can deliver sharper vision even for patients with relatively severe keratoconus.
Are you concerned about wearing contact lenses? You’re not alone! Many people are hesitant to try them because they’re often uninformed about contact lenses. We’ll answer few questions that eyecare professionals are frequently asked to provide some clarity for you.
These are two myths that persist to this day! It’s physically impossible to lose your contact lenses behind your eyes. Contact lenses also cannot fuse with your eyes. At Cornea clinic in Ahmedabad, all our lenses are made of very high-quality materials. They’re specially designed to stay on the surface of the eye. These lenses are very easy to remove if you follow the recommended method.
This type of problem is quite rare. For the most part, issues are usually related to an inadequate adjustment of the lenses. Not following the prescriptions can cause irritation. It’s essential to follow the recommendations concerning the frequency you should change your lenses. If you experience any discomfort while wearing your contact lenses, remove them as soon as possible and consult best eye surgeon in Ahmedabad at Cornea Centre.
With a proper fit performed by your best ophthalmologist , your lenses will stay in place. If a lens moves, it will usually remain in the eye until it returns to its proper place.