Anterior Eye Profilometry-guided Scleral Contact Lens Fitting in Keratoconus

Keratoconus: Diagnosis, contact lens fitting and management

Numerous studies have reviewed the prevalence of keratoconus. Estimates lie between 50 and 230 per 100,000 in the general population, approximately one per 2000.2,7,8 When considering the prevalence of keratoconus the differing diagnostic criteria used in different studies need to be taken into account. A much higher prevalence may be found as corneal topography is used more, thanks to its grea...

Wavefront-guided scleral lens prosthetic device for keratoconus.

PURPOSE To investigate the feasibility of correcting ocular higher order aberrations (HOAs) in keratoconus (KC) using wavefront-guided optics in a scleral lens prosthetic device (SLPD). METHODS Six advanced KC patients (11 eyes) were fitted with an SLPD with conventional spherical optics. A custom-made Shack-Hartmann wavefront sensor was used to measure aberrations through a dilated pupil wea...

Scleral lens for keratoconus: technology update.

Scleral lenses are large diameter lenses which rest over the sclera, unlike the conventional contact lenses which rest on the cornea. These lenses are fitted to not touch the cornea and there is a space created between the cornea and the lens. These lenses are inserted in the eyes after filling with sterile isotonic fluid. Generally, scleral contact lenses are used for high irregular astigmatis...

Contact lens fitting today

RGP materials In choosing appropriate materials, it is important to remember that keratoconic patients (as well as in other primary corneal ectasias) demand high levels of comfort because they wear their lenses for long periods of time. With steep high minus lenses, which are often required, materials with high dimensional stability are recommended in order to minimise lens distortion. Mid to h...

Scleral contact lens wear in unilateral aphakia.