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مقاله
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Abstract
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Title:
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The fitting of hard contact lens
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Author(s):
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Optometrist Seyedeh Touba Mousavi
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Presentation Type:
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Poster
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Subject:
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Cornea and Anterior Segment
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Others:
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Presenting Author:
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Name:
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Seyedeh touba Mousavi
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Affiliation :(optional)
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E mail:
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mseyedehtouba@yahoo.com
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Phone:
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04516616840
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Mobile:
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09394284900
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Purpose:
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To fit the best hard contact lens according the patient's refractive Errors and topography
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Methods:
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The retrospective study
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Results:
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Diagnostic fitting sets is important, 20 lens diagnostic fitting sets in a power of -3.00 D would be beneficial in materials of both low (<50) and high (≥50) oxygen permeability (DK). Typically, the fluorescein pattern is viewed with the assistance of a cobalt blue filter. An alignment fit is observed when the lens evenly contours the cornea with a light, even tear pooling. In KC (keratoconus),Three rigid lens-to-cornea fitting relationships have commonly been used in these cases. Apical bearing, apical clearance, and three-point touch. There are other rigid gas-permeable lens designs and fitting methods for KC such as piggyback, scleral and biotoric designs.
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Conclusion:
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The most important problem with any toric lens design is hesitancy on the part of the practitioner to use it, the complexity of the design, difficulties in fitting, expense and time involved. Even many practitioners who pride themselves their ability to fit RGP lenses rarely fit toric designs, often indicating that a spherical design will work just as well, if not better.
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Attachment:
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