Verification And Assessment Of Back Surface Aspheric Contact Lenses.
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Verification And Assessment Of Back Surface Aspheric Contact Lenses.
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Description
Back-surface aspheric contact lenses for the correction of presbyopia are becoming increasingly popular among private practitioners. An aspheric back-surface contact lens more closely conforms to the corneal surface, and at the same time provides additional plus power(or less minus power) as it gradually flattens from the lens apex to the periphery. While this provides a gradu~lly increasing add, it can be a problem for the practitioner in verifying the len ses. The intent of this paper is to demonstrate a relatively simple method of measuring the power of a peripheral point on the aspheric lens; relate this power to the distance power of the lens ordered, and finally, to demonstrate the acuities achieved by patients fitted with these lenses. For our study, thirty-four (34) Dow-Corning Variable
Focus Lenses (VFL's) were verified, then distance and near acuities were recorded at dispensing. |
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http://hdl.handle.net/2323/4601
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Author (aut): Fowle, Gary
Author (aut): Radoiu, Mike
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This paper is submitted in partial fulfillment of the requirements for the degree of Doctor of Optometry. 13 pages.
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English
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bitstream_11275.pdf
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application/pdf
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3313314
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