Orthokläätsed

Orthokläätsed, also known as orthokeratology or ortho-k lenses, are specially designed rigid gas permeable contact lenses that are worn overnight. These lenses are intended to temporarily reshape the cornea, the front surface of the eye, while the wearer sleeps. The intended effect of this reshaping is to correct refractive errors, most commonly myopia (nearsightedness).

The process involves fitting the patient with a series of lenses. The ortho-k lens has a unique design with different zones that apply gentle pressure to specific areas of the cornea. As the lenses are worn overnight, they create a temporary change in the corneal curvature. When the lenses are removed in the morning, the wearer can see clearly without the need for glasses or conventional contact lenses for a period of time, typically throughout the day.

The duration of clear vision varies from person to person and depends on factors such as the degree of refractive error and the individual's eye physiology. Ortho-k is considered a reversible treatment; if lens wear is discontinued, the cornea will gradually return to its original shape, and the refractive error will reappear. This reversibility makes it an option for individuals who wish to avoid daytime contact lens wear or refractive surgery.

Ortho-k lenses require careful fitting by a trained eye care professional. Regular follow-up appointments are necessary to monitor the effectiveness of the treatment, the health of the cornea, and to ensure optimal lens fit. As with any contact lens, proper hygiene and lens care are crucial to prevent eye infections and other complications.