Rose K contact lens fitting for keratoconus

Abstract

Rose K lenses are a viable alternative in the visual rehabilitation of patients with keratoconus.

PROSE treatment of corneal ectasia

“…This difference suggests that Betts' subjects may have had less severe disease and a greater ability to tolerate standard contact lenses than our patient subjects. In 2008, Ozkurt et al reported success in fitting Rose K lenses in 27/28 eyes of 19 patients [6]. However, only 6 of the 19 patients studied had a history of rigid gas-permeable (RGP) lens wearing failure, possibly indicating a study sample with a lower disease severity.…”

“…The optical features of soft and rigid contact lenses, including correction at the corneal plane and elimination of surface irregularities, offer advantages in corneal ectasia, thus contact lenses are the next step in treatment. As the cornea becomes more irregular and conical, difficulties in achieving satisfactory contact lens fit present [5,6].…”

Bevel toric multicurve rigid gas-permeable lens for keratoconus

“…A multitude of lenses has been developed for patients with this condition [8][9][10][11][12][13][14][15][16][17][18][19]. However, no previous study has examined a bevel toric lens, designed to improve bevel width and tear exchange efficacy, in such patients.…”

“…Individuals with keratoconus in the advanced stage require a rigid gas-permeable (RGP) contact lens to reduce distortion and provide better vision [7][8][9]. Fitting of an RGP lens improves visual acuity, and many such lenses have been developed for management of keratoconus patients [8][9][10][11][12][13][14][15][16][17][18][19]. However, RGP lenses can cause discomfort as a result of their small bevel width, which is necessitated by the difference in radius of curvature of the cornea between the vertical and horizontal directions in advanced keratoconus [20].…”

Keratokonus Olgularında Rose K Kontakt Lens

“…Ozkurt ve ark. 15 19 hastanın 28 gözüyle yaptıkları çalışmada ise başarı oranları %96'dır. Bizim olgularımızda ise bu oran %100'dür.…”