Keratoconus Frequently Asked Questions
Many of these questions and answers have appeared in the NKCF “Ask the Doctor” column of past NKCF Newsletters. If you have questions that are not answered here, contact us
If you click on a question, the answer will reveal itself.
Most experienced contact lens fitters try to maintain symmetry with similar lenses in both eyes. This usually simplifies lens care and can avoid a few other potential issues. However, keratoconus fitting can be challenging making two different lenses essential to obtain an ideal fit. I wouldn’t worry about having different lenses brands or even types in each eye, but if it concerns you, just ask your contact lens specialist to explain why they chose that approach.
As many of you know stem cell research and efforts to develop a replacement cornea have both been ongoing for many years. While progress has been made, we are still a few years away from any practical applications.
Balance depends upon input from the inner ear and the visual system. That information is processed by the brain to help orient us in space. Anything that disturbs inner ear function or vision can disrupt balance. Likewise, neurological problems can also cause imbalance.
If you are having balance issues caused by your visual system, they may be due to visual or prescription differences between your two eyes that your doctor may be able to easily correct. Sometimes it may be due to a prescription that has changed.
Because balance problems can have other causes – some potentially serious, you should discuss this with your doctor at your next visit or sooner if it worsens.
First, discontinue the drops. Eye drops for redness usually contain vasoconstrictors (medicine that makes the blood vessels smaller). Over time, the vasoconstrictors become irritating which causes more redness. This sets up a vicious cycle causing some patients to become virtually addicted to these drops. Using preservative free artificial tears can help make the eyes feel more comfortable and do not contain these vasoconstrictor medicines.
That said, redness in a GP lens wearer is often a sign of a lens fitting problem or drying of the ocular surface related to the lens fit. Fitting issues can easily be identified by your contact lens specialist. Sometimes a minor change in fit, polishing the lens surface, a new material or a new lens care solution may solve the problem. Occasionally, eliminating redness can be challenging. Other issues should be explored for a persistent red eye in a lens wearer. These include underlying dry eye and allergy. All in all, it is best to discuss this with your contact lens fitter who can find the cause and help solve the problem.