Keratoconus. Treatment

Contact lenses

  In early stages keratoconus points can be sufficient to correct for the soft astigmatism. As Condition advances, points can be unable give to the patient a satisfactory degree of visual acuteness, and the majority of clinical experts will move to treatment of a Condition with contact lenses.

  Firm gas water-permeable lens for keratoconusIn keratoconic patients, contact lenses refine vision by means of a fluid of a disrupture gap filling between the nonregular corneal surface and a smooth regular interior surface of a lens, thus framing effect of more smooth cornea. Many specialized types of contact lenses have been developed for keratoconus, and the defective people can search both doctors, specialized in the conditions of a cornea, and technicians - orthopedists of a contact lens who have a case treating patients with keratoconus. The nonregular cone represents contest, and the technician - the orthopedist will try to yield a lens with optimum contact, stability and a steepness. Some empirical gadget can appear necessary.

  Traditionally, lenses for keratoconus were a "difficult" or firm gazovo-water-permeable variety of a contact lens though manufacturers also have yielded specialized "soft" or hydrophilic lenses. The soft lens has a tendency to correspond to the pencil-point shape of a cornea, thus canceling its effect. To counter it, hybrid lenses have been recently developed, which are firm at center and sweepped by the soft skirt. The soft or hybrid lenses however do not appear effective for each patient.

  Some patients also find good correcting of vision and comfort with the "combined" combination of a lens in which gas water-permeable firm lenses are worn on the soft lenses, both maintenance of a degree of correcting of vision. One shape of the combined lens uses the soft lens with the drowned central field to accept a firm lens. The gadget of the combined combination of a lens demands a case from the technician - the orthopedist of a lens, and shipping from the side keratoconic the patient.

  Skleralnye lenses are sometimes ordered for cases premature or very nonregular keratoconus; these lenses coat a major proportion of a surface of an eye and therefore can offer the refined stability. The larger size of lenses can make their unattractive or inconvenient to some, however their easier processing can win a locating of patients with the lowered dexterity, such as elderly.