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Keratoconus: Causes, Symptoms, and Treatment Options
Who Develops Keratoconus
Keratoconus affects people of all ethnicities and backgrounds, and its exact cause is not fully understood. A combination of genetic and environmental factors appears to contribute to who develops the condition and how quickly it progresses.
Keratoconus affects millions of people worldwide, and improved screening tools have led to higher detection rates in recent years. It occurs across all age groups but most commonly begins in adolescence or early adulthood.
Prevalence varies by region, with higher rates reported in parts of the Middle East compared to other areas. Because early-stage keratoconus can be subtle, many cases may go undetected without detailed corneal imaging.
Genetic factors play a role in keratoconus, though only a minority of patients have a known family history of the condition. Inheritance patterns can vary, and not everyone who carries a genetic predisposition will develop the disease.
If a parent or sibling has keratoconus, our eye doctors may recommend earlier and more frequent corneal screenings for you and other close relatives. Family history is considered one of the strongest identifiable risk factors for developing this condition.
Eye rubbing is the most modifiable risk factor for keratoconus. Repeated mechanical pressure on the cornea can trigger or accelerate thinning. This is especially important for people who rub their eyes frequently due to allergies or chronic irritation.
Other conditions that increase your risk include:
- Atopic dermatitis (eczema)
- Asthma
- Chronic eye allergies that cause persistent itching
If allergies are causing you to rub your eyes regularly, treating the underlying allergy is an important step. Breaking the rubbing habit is one of the most effective things you can do to slow the progression of keratoconus.
How Our Eye Doctors Diagnose Keratoconus
Accurate diagnosis requires detailed corneal imaging, not just a standard vision test. Our eye doctors use advanced technology to detect even subtle changes in corneal shape and thickness, allowing for early diagnosis and timely intervention.
Corneal topography is a painless, noninvasive test that maps the surface shape of your cornea. The resulting color-coded image reveals steepening patterns and irregularities that suggest keratoconus.
Corneal tomography, which uses Scheimpflug imaging technology, adds further detail by measuring the back surface of the cornea and its thickness at every point across the surface. This test can detect subtle changes that topography alone may not capture, making it especially valuable for identifying keratoconus in its earliest stages.
During a slit-lamp exam (a microscopic examination using a bright, narrow beam of light), our eye doctors look for physical signs associated with keratoconus. A Fleischer ring, which is a brownish ring of iron deposits at the base of the corneal cone, and Vogt striae, which are fine stress lines visible in the corneal tissue, are characteristic findings.
In more advanced cases, a Munson sign may be present, which is a visible V-shaped indentation in the lower eyelid when the patient looks downward. A scissoring reflex seen during retinoscopy (a test using a light to evaluate how the eye focuses) is another early clinical indicator our doctors watch for.
After diagnosis, regular follow-up visits are essential. Serial corneal topography maps taken over time allow our eye doctors to determine whether the condition is stable or worsening.
This progression data directly guides treatment decisions. If your imaging shows continued change, our eye doctors may recommend corneal cross-linking to stop further deterioration. Stable maps are a sign that your current management approach is working well.
Treatment Options We Offer for Keratoconus
Our approach to treating keratoconus focuses on halting progression, preserving corneal tissue, and helping you achieve the clearest vision possible. The right treatment plan depends on how far the condition has advanced and how quickly it is changing.
Corneal collagen cross-linking (CXL) is the only treatment proven to stop keratoconus from worsening. During this procedure, riboflavin (vitamin B2) drops are applied to the cornea and then activated with controlled ultraviolet light. This process strengthens the bonds between collagen fibers, making the cornea more resistant to further thinning and bulging.
CXL does not reverse existing corneal changes, but it can significantly slow or halt progression, giving your other vision correction options a stable foundation to work from. Our eye doctors will evaluate your imaging results to determine whether you are a candidate for this procedure.
Intacs are small, crescent-shaped implants that are placed within the layers of the cornea to flatten and reshape its surface. This can reduce the cone-like bulge and improve how well contact lenses or glasses correct your vision.
Intacs do not stop the progression of keratoconus on their own and are typically used alongside cross-linking or as part of a broader treatment plan. Our eye doctors evaluate each patient's corneal shape, thickness, and overall eye health to determine whether Intacs are appropriate.
Phototherapeutic Keratectomy (PTK) is a laser procedure that precisely removes surface tissue from the cornea. In the context of keratoconus, it can be used to smooth corneal irregularities or address surface scarring that interferes with vision or contact lens wear.
Superficial keratectomy is a related procedure that manually removes abnormal surface tissue. Both approaches can improve the corneal surface in select patients and may be used in combination with other treatments. Our eye doctors will assess your specific situation to determine which approach is most appropriate for you.
Amniotic membrane tissue, derived from placental tissue, has natural healing and anti-inflammatory properties. It can be used at the corneal surface to support healing after procedures such as PTK or superficial keratectomy.
Our eye doctors may incorporate amniotic membrane therapy into your treatment plan when corneal surface healing needs additional support. This is a well-established approach in corneal care and can help reduce inflammation and promote a smoother recovery.
Once the cornea is stable, specialty contact lenses are often the most effective way to restore clear, functional vision. Standard soft lenses cannot conform to the irregular corneal surface, but rigid and specialty lenses can.
Options include:
- Rigid gas permeable (RGP) lenses, which create a smooth optical surface over the irregular cornea
- Scleral lenses, which vault over the entire cornea and rest on the white of the eye, offering comfort for many patients
- Hybrid lenses, which combine a rigid optical center with a soft outer skirt for added comfort
Our eye doctors fit these lenses based on detailed measurements of your individual corneal shape to ensure the best possible comfort and visual outcome.
Frequently Asked Questions
Below are answers to questions our patients commonly ask about living with and managing keratoconus.
There is currently no treatment that reverses keratoconus or restores the cornea to its original shape. However, corneal cross-linking can halt progression, and treatments like Intacs, PTK, and specialty contact lenses can significantly improve vision and quality of life. The focus of care is stabilization and functional vision rather than a cure.
Progression varies widely from person to person. Some patients experience rapid changes over one to two years, while others progress slowly over a decade or more. Younger patients and those who frequently rub their eyes tend to progress faster. Regular imaging at scheduled follow-up visits allows our eye doctors to catch any acceleration early and adjust your treatment plan accordingly.
Yes, first-degree relatives of keratoconus patients carry a meaningfully higher risk. We recommend that siblings and children of affected individuals undergo corneal topography screening, particularly during adolescence when the condition most often begins. Catching keratoconus early, before significant corneal changes have occurred, opens the widest range of treatment options.
In the early stages, when corneal irregularity is mild, glasses may still provide reasonable correction. As the condition advances, the distortion increases beyond what standard lenses can address. At that point, specialty rigid or scleral contact lenses become necessary for clearer vision. Your eye doctor will guide you on when that transition makes sense for your specific situation.
The most important daily habit is to stop rubbing your eyes entirely. Using preservative-free artificial tears for comfort and antihistamine eye drops for allergy-related itching can reduce the urge to rub. Wearing sunglasses outdoors can help with light sensitivity. Keeping your scheduled appointments is equally important so that any progression is caught promptly rather than discovered at a later, more advanced stage.
Not necessarily. Treatment urgency depends on how advanced the condition is and whether it is actively progressing. Some patients are monitored closely before any procedure is recommended. If imaging shows ongoing change, earlier intervention with cross-linking is generally advisable to protect as much healthy corneal tissue as possible. Our eye doctors will walk you through the timing that makes most sense for your individual situation.
See Our Keratoconus Specialists at NewView Eye Center
If you have been diagnosed with keratoconus or are experiencing vision changes that glasses can no longer correct, we encourage you to schedule a comprehensive evaluation with our team at NewView Eye Center, proudly serving patients across Northern Virginia. Our eye doctors combine advanced diagnostic technology with a personalized approach to help you protect your vision and make confident, informed decisions about your care. We are here to support you at every stage of this journey, from initial diagnosis through long-term management.
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