a progressive change in the shape of the cornea, creating a "cone" - like configuration and causing blurred vision - severe cases may require a corneal transplant

Rare degenerative disease, occurring in the second decade of life, in which the cornea becomes cone-shaped, thins in the center, and may rupture.

progressive thinning of the central cornea, resulting in a bulging outward and the formation of a rounded cone; produces moderate to severe corneal distortion and increase in myopia; can cause corneal scarring, requiring corneal transplantation to restore vision

A disease in which the cornea becomes misshapen, causing blurry vision.

A disease of the cornea in which the cornea is conical shaped, thin and bulging forward. Most patients who have keratoconus have very high short-sightedness and astigmatism. This disease of the eye is not correctable by LASIK.

A rare inherited condition of the cornea in which the cornea is steepened to the point of being cone-shaped.

abnormal cone-shaped protrusion of the cornea of the eye; can be treated by epikeratophakia

an eye disease that involves thinning of the cornea and therefore a bulging of the cornea into a cone shape

a vision disorder that occurs when the normally round cornea (the front

Progressive eye disorder in which the cornea becomes irregular and conical. The condition usually effects both eyes, but one may be affected well before the other. The onset of the condition is often around puberty. Vision becomes affected when the coning leads to increased astigmatism. In the early stages glasses can be used to correct vision. In more advanced cases hard (Gas Permeable) contact lenses are the preferred treatment. In very advanced cases, surgery to replace the cornea with a graft is often successfully performed with good visual results.

Conical distortion of the cornea that leads the eye to have severe astigmatism and blurred vision.

A condition where the cornea becomes cone-shaped, causing major vision distortion. People with keratoconus are particularly challenging to contact lens fitters, who usually must prescribe custom-made lenses for them.

is a hereditary, degenerative corneal disease that causes a decrease in visual acuity. In patients with keratoconus, the cornea thins and a cone-shaped protrusion occurs in the central portion of the cornea. Management of this disease is aimed at obtaining the best possible vision, and includes the wearing of specialized contact lenses and/or corneal transplant surgery.

a hereditary, degenerative condition that causes the cornea to thin and protrude into a cone-like shape.

obscure disease of cornea causing astigmatism

The coning (formation of a cone-shape) of the cornea, distorting vision and found mainly in young adult males, which often leads to corneal transplants later in life.

A progressive disease of the eye in which the cornea becomes progressively thinner and the development of an irregular, cone-like corneal protrusion occurs. As the disease progresses, vision becomes increasingly distorted.

Keratoconus is a progressive eye disease that results in thinning corneal tissue, causing the cornea to lose its natural curvature. This leads impaired vision due to the improper focusing of light rays on the retina.

a mis-shaped cornea which cannot focus clearly. Sometimes a contact lens will sometimes help. Keratometry: measuring the curvature of the cornea

conical protrusion of part of the cornea

uncommon condition in which the cornea becomes thin and protrudes. Keratoconus literally means a cone-shaped cornea. This abnormal shape can cause serious distortion of vision.

A degenerative non-inflammatory disorder of the eye (specifically the cornea) in which structural changes within the collagen of the cornea cause the cornea to thin.

A degenerative corneal disease in which the center of the cornea thins and the cornea becomes conical, rather than spherical, in shape.

is a disorder characterized by an irregular cornea surface (cone shaped) resulting in blurred and distorted images

pathological cone-shaped protrusion of the cornea; contact lenses provide clearer vision than spectacles.

gradual enlargement of corneal shape

Rare, inherited disorder characterized by an irregular corneal surface (cone-shaped) resulting in blurred and distorted images

Conical cornea; a lesion which produces a basin-shaped depression in the posterior surface of the cornea.

Degeneration and thinning of the cornea resulting in a cone-shaped bulge (a type of irregular astigmatism). The cause is unknown, but may be genetic. The first symptom is blurred vision that doesn't improve enough with glasses (contacts usually work well for a while). You may also have double vision or distorted vision.

Conical protrusion of the center of the cornea.

Hereditary condition in which the cornea become misshapen, distorting a person's vision. Click HERE for more info.

A degenerative corneal disease in which the cornea thins and becomes conical rather than spherical in shape. Go to Top

Anomalous development of the cornea in which the cornea assumes a conoidal shape. A.k.a., conical cornea.

A disease of the cornea that causes a cone-shaped protrusion of the center of the cornea.

a disorder characterized by an irregular corneal surface (cone-shaped)

Condition in which the cornea develops a cone-shaped bulge that can result in major blurring and distortion.

Cone-shaped deformity of the cornea.

a disease in which the cornea tends to grow forward, like a cone. Keratoconus can only be corrected by wearing a contact lens.

An abnormality of the eye where the cornea becomes deformed in the shape of a cone. People who have this condition cannot have laser refractive surgery.

Keratoconus (from Greek: kerato- horn, cornea; and konos cone), is a degenerative non-inflammatory disorder of the eye in which structural changes within the cornea cause it to thin and change to a more conical shape than its normal gradual curve. Keratoconus can cause substantial distortion of vision, with multiple images, streaking and sensitivity to light all often reported by the patient. Keratoconus is the most common dystrophy of the cornea, affecting around one person in a thousand, and it seems to occur in all ethnic groups worldwide, although for some groups the prevalence of keratoconus is greater than others.