Keratoconus is an eye condition in which the clear outer layer of the eye, called the cornea, progressively becomes thinner, causing bulging or irregularities in the corneal shape.
The eye is rounded in shape so that external images can be properly focused on the retina (back of the eye). The thin outer layer of the eye is called the cornea. This layer is very important for quality of vision, as it accounts for approximately 30% of the focusing power of the eye. If the cornea is damaged, weakened or mishappen, then vision problems can result.
Keratoconus is an eye condition where the center of the cornea bulges or forms waves due to thinning of the cornea. This change in curvature can cause blurriness or distortions in vision. When the bulging in the center of the cornea worsens, the center of the eye takes on more of a cone shape. Thus, keratoconus is derived from two Greek terms, “kerato,” meaning cornea, and “conus,” meaning cone.
The primary tests used to diagnose keratoconus are those that measure corneal shape and thickness. The most common include:
Keratoconus is most common in younger adults: those aged 20 to 40 years old. In general, patients of this age have initially very good vision, and any blurred vision can be easily corrected with glasses. The most common symptom of keratoconus in this age group is a progressive loss of vision that cannot be corrected with glasses. The condition is almost universally bilateral, meaning it occurs in both eyes at the same time. Progressive worsening of vision in both eyes at the same time can also be a sign of keratoconus. Other signs include higher levels of astigmatism or visual distortions that are difficult to correct with glasses. There are a number of direct clinical measurements, in addition to those listed above, that Dr. Boxer Wachler performs to detect irregularities in the corneal shape and to determine a diagnosis of this eye condition.
For many years, keratoconus was thought to be a rare condition, affecting only about 1 out of every 2,000 persons. Data also suggested that the condition was relatively uniform across the population, affecting various ethnic groups equally.
New data suggests the condition is much more common and affects certain patients more than others. This data came about primarily as a side benefit to the development of LASIK. The introduction of LASIK brought with it the development of a range of new types of tests that can more accurately measure corneal shape (a very important measure to ensure excellent LASIK outcomes). This improved measurement technology led to the discovery that a much higher percentage of patients have irregularly shaped corneas caused by keratoconus. Previously, these patients were thought to simply have astigmatism that was hard to correct.
Recent data from several studies in Europe estimate that keratoconus occurs in approximately 1 out of 375 patients, and that people of Asian descent have a much higher incidence of the condition. Those of Indian descent and certain other Asian ethnic groups were found to be four times more likely than other groups to have keratoconus.
The cause of keratoconus was unknown until recent research showed it is due to a lack of anti-oxidant enzymes in the cornea that leads to damaged collagen fibers. There are also both genetic and environmental factors. Excessive rubbing of the eyes has been found to weaken the corneal tissue, leading to thinning. Certain types of rare disorders are also associated with the condition, including Fuchs’ Dystrophy, retinitis pigmentosa and Down’s Syndrome, along with common illnesses such as hay fever or allergies. Approximately 1 in 10 patients who have keratoconus has a parent who also has it.
A range of medical technologies are available to treat keratoconus; Holcomb C3-R CXL, corneal cross-linking, Intacs, and implantable contact lenses. All of these treatments have the same goal: to eliminate the bulging shape or irregularities in the cornea and create a smooth, circular corneal surface. Dr Brian Boxer Wachler is a leader and pioneer in keratoconus treatment. He has provided this educational website to more fully describe keratoconus and the available treatments.
For well over 19 years, the Boxer Wachler Vision Institute has been committed to improving the quality, care and vision of those suffering from Keratoconus with FDA-APPROVED equipment. We help patients in Southern California and outside states and other countries with: Holcomb C3-R®, Intacs® for Keratoconus, FORTIFIED CK™, Visian ICL™, and PRK after Cornea Transplant procedures.
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Boxer Wachler Vision Institute has the experience and FDA-APPROVED equipment necessary to provide superior treatment, consultation and quality care for the Keratoconus treatments. Dr. Brian is regarded as one of the top leaders in the field of Keratoconus treatment. His role as the “doctor’s doctor” has been earned through his broad expertise.
Holcomb C3-R® (Corneal Collagen Cross-Linking Riboflavin). Can strengthen the weak corneal structure and prevent cornea transplants.Read More
Intacs® are micro-thin inserts which aid in improving the shape of the cornea and improve quality of vision in patients struggling with Keratoconus.Read More
Visian ICL™ is an implantable contact lens that aids in improving moderate to severe myopia (nearsightedness).Read More
Fortified Conductive Keratoplasty (CK)™. Is a noninvasive procedure which utilizes radiofrequency energy to improve astigmatism.Read More
(PRK)™ treatment after a Cornea Transplant is a specialized laser technique that can dramatically improve your vision after a cornea transplant.Read More
Have you been diagnosed with a keratoconus eye condition? There are many treatment options that can relieve the symptoms you and your doctor can discuss. Typically in the early stages, glasses are worn to help improve the patient’s vision. However, as keratoconus worsens the use of glasses to correct vision isn’t enough. At that stage, it is usually recommended to use special contact lenses.
Special contact lenses help smooth out the cornea and improve vision by allowing tear fluid to fill the gaps caused by keratoconus between the cornea and the lens. If the lenses are not properly removed and replaced, they can create more damage to the cornea and further hinder vision. Once contact lenses become uncomfortable for patients, many opt for corneal implants (INTACS) surgery or insertable contact lens surgery.
Many patients prefer the insertable contact lens as they require less care and are easier to maintain. Corneal collagen crosslinking, also known as Holcomb C3-R, is a new procedure where a special solution is applied to the eye. Holcomb C3-R shows strong promise in stopping the progression of keratoconus. Many patients are apt to have this treatment to avoid the need for surgery and stop the loss of vision. Dr Brian takes a holistic approach to Keratoconus treatments from non-invasive strengthening with Holcomb C3-R to reshaping with Intacs and vitamin support of the cornea.
Keratoconus is usually diagnosed in adolescents however, it seems to worsen the most in patients between 20 and 30 years old. A keratoconus eye condition is unpredictable and the progression of the disease can vary from patient to patient. When the disease progresses to both eyes, it is difficult for the patient to live normally. It is harder for the patient to drive or even read. Corneal implants are a good source of relief at this stage. In some severe cases, a cornea transplant is needed to restore vision. Though this condition is a serious disease, if you are seen regularly keratoconus can be managed and treated. If left untreated, it can severely impair your vision. Protect your vision, speak to a doctor immediately if you feel you may be suffering from this condition.