Keratoconus causes symptoms signs diagnosis and
The disorder tends to develop most often among adolescents at or around puberty or during the late teen-age years. Generally, laser surgery is not recommended contraindicated for individuals with keratoconus. Keratoconus also is associated with overexposure to ultraviolet rays from the sun, excessive eye rubbinga history of poorly fitted contact lenses and chronic eye irritation.
Patients are advised to avoid vigorous eye rubbing or trauma. Most patients still require vision correction with spectacles or contact lenses, and often hard or gas permeable lenses are required if high levels of astigmatismare present.
Individuals with a family history of keratoconus are at a greater risk of developing the condition than people the general population. Inflammation is a normal process that occurs in the body in response to injury or infection. The cornea must remain clear transparent and the proper shape in order to be able to transmit and focus incoming light.
Keratoconus symptoms images
These rings of light are reflected back to the instrument and recorded. Anterior lamellary keratoplasty has resurfaced as an option for treating keratoconus. Keratoconus is treated with glasses or contact lenses early in the condition. Topography allows your doctor to see those changes. They include: Blurred or distorted vision Increased sensitivity to bright light and glare, which can cause problems with night driving A need for frequent changes in eyeglass prescriptions Sudden worsening or clouding of vision When to see a doctor See your eye doctor ophthalmologist or optometrist if your eyesight is worsening rapidly, which might be caused by an irregular curvature of the eye astigmatism. Custom toric soft contacts for keratoconus are significantly more expensive than regular soft contacts, but vision insurance may cover some of the costs associated with contact lenses for keratoconus. Accessed March 14, Keratoconus signs and symptoms As the cornea becomes more irregular in shape, it causes progressive nearsightedness and irregular astigmatism to develop, creating additional problems with distorted and blurred vision. Both lenses have a very wide range of fitting parameters for a customized fit and are larger in diameter than regular soft lenses for greater stability on a keratoconic eye. Keratoconus may become progressively worse for 10 to 20 years before slowing. Prognosis The prognosis for penetrating keratoplasty in a keratoconic patient is excellent, with most patients able to return to an active lifestyle and the pursuit of personal goals. A positive value indicates higher inferior curvature while a negative value indicates higher superior curvature.
The overlying corneal epithelium may become oedematous, and fluid may leak through the corneal epithelium. However, the procedures can be technically challenging requiring converstion to a penetating keratoplasty, and post-operatively there is the possiblity of interface haze leading to a decrease in BCVA; it is not clear if astigmatism is better treated with anterior vs penetrating keratoplasty.
Keratoconus treatment In the mildest form of keratoconus, eyeglasses or soft contact lenses may help. Given the relatively high prevalence of keratoconus in general population, some of the associations may be coincidental.
based on 9 review