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13 Cards in this Set
- Front
- Back
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What are the benefits to wearing MF GPs?
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great vision at distance and near
great O2 permeability durability/wettability Pt retention |
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Aspheric Candidates:
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a patient that needs intermediate vision
lower lid loose or low lid position small to avg pupil size not critical of vision low to med adds |
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Disadvantages of Aspheric MF GPs
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corneal molding
spectacle blur cannot achieve high add powers |
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Advantages of Aspheric MF GPs
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improved technology
easier to fit, easy transition from SV GPs simultaneous vision Intermediate vision, CRT work |
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Advantages of Multiaspheric GPs
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corneal alignment, fitting philosophy
thin, comfortable more available ADD |
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______ is important with Aspheric GPs
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centration
fit steep (limit movement to <1mm) |
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If aspheric GP lens is too loose _______ b.c.
If add not high enough, try a higher add or _______ diameter |
steepen
increase |
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If translating (segmented) MF GP has excessive rotation
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flatten bc by 0.5 D, increase prism by 0.5 pd
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If CL rides high
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increase prism by 0.5 pd
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If CL doesn't translate
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decrease bc by 0.5 D
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Aspheric GPs are dependent on _____ size
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pupil
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Aspheric lenses are developed off of the basis of ________ vision
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simultaneous
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Translating (segmented) bifocal GPs have this main disadvantage
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discomfort
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