Treating and Managing Keratoconus

In a healthy eye, your cornea is round and smooth like a basketball, helping to focus light precisely onto the back of your eye. In keratoconus, the cornea slowly becomes thinner and weaker in certain areas, causing it to bulge forward into a cone shape, more like the tip of a football. Since your cornea is responsible for about 70 percent of your eye's focusing power, this irregular cone shape scatters light in many directions instead of focusing it clearly on the retina. This scattering is what causes the blurry, distorted, or ghosted vision that people with keratoconus experience.

Keratoconus usually starts between the ages of 10 and 25 and tends to run in families. If you have a close family member with keratoconus, your risk of developing the condition is about 25 times higher than average. People with allergies, asthma, or eczema are also at higher risk, especially if they rub their eyes frequently. Eye rubbing can increase your risk by more than four times because it physically weakens the cornea over time. While keratoconus was once thought to be rare, affecting about 1 in every 2,000 people, modern testing and imaging suggest it may be more common than we previously understood.

Early signs of keratoconus include vision that keeps getting blurrier even with new glasses, seeing multiple ghost images of the same object, and noticing halos or streaks around lights, especially at night. You might also experience increased sensitivity to bright light or glare, a feeling that straight lines look bent or wavy, and the frustration of needing frequent changes to your glasses prescription because your vision keeps changing. Some people notice that one eye sees much worse than the other, or that they need to squint or tilt their head to see more clearly.

Our ophthalmologists at ReFocus Eye Health Bloomfield (NW) use advanced diagnostic technology to detect keratoconus, often before you notice symptoms. A test called corneal topography creates a detailed, colorful 3D map of your cornea's shape, showing even tiny irregularities or areas of thinning. We also measure corneal thickness with a test called pachymetry to identify weak spots. These tests are completely painless and take only a few minutes, but they provide critical information that helps us catch keratoconus in its earliest stages and track how your cornea changes over time.

Keratoconus progresses through different stages of severity. In the early or mild stage, your cornea shows slight irregularity, and your vision can often still be corrected with glasses or regular soft contact lenses. As it becomes moderate, the cone shape grows more pronounced and irregular, requiring specialty rigid contact lenses to provide clear vision. In the advanced or severe stage, the cornea becomes very steep and thin, sometimes with scarring that can significantly affect vision. The good news is that with regular monitoring and early treatment, most people never progress to the advanced stages.

If keratoconus is not managed properly, it can lead to significant vision problems that interfere with daily activities like reading, driving, and recognizing faces. In some cases, corneal scarring can develop, making vision correction more difficult. A rare but serious complication called acute hydrops can occur when the inner layer of the cornea suddenly tears, allowing fluid to rush in and causing the cornea to swell dramatically and vision to become very cloudy. However, with modern treatments like corneal cross-linking and specialty lenses, and with regular monitoring by experienced eye care professionals, most people with keratoconus can maintain good, functional vision and enjoy normal, active lives throughout their lifetimes.

Keratoconus usually progresses most rapidly during the teenage years and twenties when the cornea is still developing and changing. The condition often slows down significantly or stops progressing on its own by age 30 to 40 as the cornea naturally becomes more rigid with age. However, every person is different, and some cases continue to progress longer. Treatments like corneal cross-linking are designed to stop this progression much earlier, giving you stable vision for decades and protecting you from needing more invasive treatments later in life.

Currently, there is no cure that can reverse the structural changes that have already happened to the cornea or return it to its original round shape. However, modern treatments can very effectively stop the condition from getting worse, and vision can almost always be improved to a high functional level that allows you to drive, work, read, and enjoy your daily activities. With specialty contact lenses, surgical procedures, or a combination of treatments, the vast majority of people with keratoconus maintain excellent quality of life and independence.

Fitting contact lenses for a cone-shaped cornea requires specialized training, advanced diagnostic equipment, and patience from both you and your eye care provider. It may take several visits and multiple trial lenses to find the perfect lens design and fit that provides clear, stable vision and all-day comfort. However, an experienced specialist in keratoconus management can help almost everyone succeed with contact lenses. Many patients find that the time invested in proper fitting is well worth it for the dramatic improvement in their vision and quality of life.

Corneal cross-linking is designed to stop progression and stabilize your cornea, not to instantly improve your vision. Your eye may feel uncomfortable, scratchy, or sensitive to light for several days to a week after the treatment as the surface heals. Your vision may be blurry or fluctuate during the healing process, which is completely normal. Vision typically stabilizes within 3 to 6 months as the cornea fully heals and the strengthening effects take hold. Some patients notice a small improvement in vision or a slight flattening of the cone over the following year, but the primary goal is stabilization rather than vision improvement.

No, the vast majority of people with keratoconus will never need a corneal transplant. With today's highly effective treatments like corneal cross-linking to stop progression and advanced specialty contact lenses to correct vision, transplants are needed much less often than in the past. Only about 10 to 20 percent of keratoconus patients will eventually require transplant surgery, usually those with very advanced disease, severe scarring, or those who cannot tolerate any type of contact lens. Early detection and proactive treatment significantly reduce the likelihood of ever needing a transplant.

Yes, there is a strong genetic component to keratoconus. If you have been diagnosed with the condition, your close family members, including children, siblings, and parents, have approximately 25 times higher risk of developing it compared to the general population. It is a very good idea for your family members to have regular comprehensive eye exams with corneal evaluation, especially during their teenage years and early twenties when keratoconus most commonly develops. Early detection in family members allows for monitoring and early intervention if the condition appears.

Most people with keratoconus can drive safely and meet legal vision requirements with the right vision correction, whether that is glasses in early stages or specialty contact lenses as the condition progresses. However, night driving can be particularly challenging due to increased glare, halos, and starbursts around headlights and streetlights. Make sure your prescription and lens fit are up to date and optimized. Talk to your ophthalmologist about specialty lens designs or coatings that can help reduce glare and improve your night vision for safer, more confident driving after dark.

Call your eye doctor right away if you notice any sudden decrease in vision, severe eye pain, intense redness, or new cloudy or hazy areas in your sight. These could be signs of a complication like acute hydrops, a corneal infection, or a problem with your contact lens that needs immediate medical attention. Quick treatment can prevent permanent damage and preserve your vision, so never hesitate to reach out if something feels wrong or different with your eyes.

Hormonal changes during pregnancy can sometimes cause keratoconus to progress more rapidly than usual, although this does not happen to everyone. The exact reasons are not fully understood, but hormonal fluctuations may affect corneal structure and fluid balance. If you are pregnant or planning to become pregnant, let your ophthalmologist know so they can monitor your corneal shape and thickness more closely during and after your pregnancy. Most women with stable keratoconus have no problems during pregnancy, but extra monitoring provides peace of mind.

The keratoconus condition itself usually does not cause pain. However, you might experience eye irritation, dryness, discomfort from poorly fitting or dirty contact lenses, a feeling of something in your eye, or headaches from straining to see clearly. In rare cases of acute hydrops, you may experience sudden pain along with very blurry vision. Proper treatment, well-fitted specialty lenses, good lens hygiene, and regular use of lubricating drops usually relieve these symptoms and keep your eyes feeling comfortable throughout the day.