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Course
Introduction
This course covers the subjects of in-office contact lens modification
of rigid lenses, and delivery to the patient. Also included in this
section is some supplementary information on the use of the radiuscope,
on DK value and gas permeable lenses, and ANSI standards for rigid and
soft lenses. The in-office modifications which are possible with rigid
lenses include: reducing the overall lens diameter, flattening the base
curve, blending transition zones, removing scratches, adding minus power,
adding plus power and dotting the lens for identification. The use of
the radiuscope will be described and illustrated as it is used to verify
the radius of curvature of a spherical surface. We continue with a discussion
of the uses of contact lens solutions for rigid and soft lenses. These
include wetting, cleaning, and soaking solutions for rigid lenses, and
cleaning, disinfecting, rinsing, and re-wetting solutions for soft lenses.
This is followed by a discussion of patient instruction techniques for
lens insertion and removal as well as recommended "breaking-in" wearing
schedules. An abbreviated table of ANSI standards is also part of this
section. This table consists of the most referenced standards for rigid
and soft lenses- those which you may be called upon to know. We conclude
with a glossary of important terms which were used throughout this course,
as well as some which you may be seeing for the first time.
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