Contact lens fitting today
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چکیده
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 high DK/t lens materials are preferable, especially for large or flatter fitting lenses, but lower DK/t lenses are still used for stability and superior wetting properties.
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Continuing education CET
● Tear film assessment should be undertaken with minimal invasion of the structure – non-invasive techniques should be used whenever possible ● Assessment must be made both prior to and during contact lens wear. Tear film quality should be assessed both with the lens in situ and without the lens ● Use of the Tearscope in clinical practice allows a more detailed examination of the tears to be un...
متن کاملA Systematic Approach to Fitting Keratoconus Lenses
ABOUT THE AUTHOR Dr. Rose is the designer of the Rose KTM lens, now fit in over 50 countries. He has presented papers on subjects including keratoconus, aphakic GP fitting for babies, case contamination, GP lens fitting and piggyback fits. He practices optometry in Hamilton, New Zealand, specializing in keratoconus and post-graft contact lenses. He is an inaugural fellow and former president of...
متن کاملContact lenses fitting after intracorneal ring segments implantation in keratoconus.
PURPOSE Evaluate contact lenses fitting after intracorneal ring implantation for keratoconus, its visual acuity and comfort. METHODS Retrospective study of patients undergoing contact lenses fitting, after intracorneal ring for keratoconus. The criterion for contact lens fitting was unsatisfactory visual acuity with spectacle correction as referred by the patients. All patients were intoleran...
متن کاملMini-scleral Contact Lens for Management of Poor Visual Outcomes after Intrastromal Corneal Ring Segments Implantation in Keratoconus
PURPOSE To evaluate the feasibility and efficacy of mini-scleral design (MSD) contact lenses to treat keratoconus patients who were unsatisfied with the results of corneal inlay. METHODS In this prospective interventional case series, 9 eyes of 6 keratoconus patients who were unsatisfied with the results of corneal inlay were fitted with MSD contact lenses. Demographic data, uncorrected visua...
متن کاملPhotokeratoscopy in fitting contact lens after penetrating keratoplasty.
The formula based on keratometric readings which is generally used is unsatisfactory for fitting contact lenses after penetrating keratoplasty, possibly owing to lack of information on the peripheral corneal toricity. In these studies a photokeratoscope was used to examine the entire graft topography. In all cases the corneal configuration became more normal after suture removal, but a consider...
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