NCLE Correct Questions & Answers(GRADED A+)

which of the following is not important to document in medical records for contact lens patients? - ANSWER location at which the patient was originally taught insertion and removal which of the following will not increase the movement of a tight fitting rigid gas permeable lens? - ANSWER enlarge the posterior optic zone After building up her wearing time, Jennifer returned for an afternoon recheck after eight hours of lens wear. The lenses moved 0.5 mm and her complaints were minimal except for late afternoon burning. Which would you suspect? - ANSWER tight lens To correct a flat fitting rigid gas permeable lens you should: - ANSWER Enlarge the optical zone IN order to create a smooth blend between the intermediate and peripheral curve of the following contact, which radius tool should be used? CPC 7.50 mm (45.00 D) IPC 8.50 mm PPC 10.50 mm - ANSWER 9.5 which of the following polishing compounds should not be used with gas permeable lenses - ANSWER Silvo To increase tear exchange with a rigid gas permeable lens what should be attempted? - ANSWER Reduce the overall lens diameter, Flatten the peripheral curves, and decrease the optic zone Advantages of a myoflange versus a single cut high plus lens include: 1.) Reduce center thickness 2.) Increased optical zone 3.) reduced weight - ANSWER 1, 2 and 3 A technique for correcting a high ridding rigid minus lens may be to use a - ANSWER Prism ballasted lens Mike, a welder whose Rx is -6.00 +2.00 *180 has been advised to trade his PMMA lenses of 20 years for a modality that allows more oxygen to the cornea. The first lens of choice would be: - ANSWER Low to mid Dk RGP A low riding high lens on a 40.00 @ 180 / 40.75 @ 90 cornea could be corrected with: - ANSWER A myoflange lenticular Rigid gas permeable lens flexure may be eliminated by: - ANSWER reducing sagittal vaulting, increasing center thickness, choosing a lower Dk material What two design changes might be helpful in centering a high riding myopic lens? 1.) Flattening the base curve 2.) myoflange lenticular 3.) Hyperflange lenticular 4.) Prism ballast - ANSWER 3 and 4; hyperflange lenticular and prism ballast on a compromised cornea, such as a one that has undergone a corneal graft, what lens characteristics would be most beneficial? - ANSWER high Dk/L lenses that allow more oxygen to the cornia K's 42.00 @ 170 / 43.00 @ 80 Rx -3.00 -1.00 x 170 Given the above Rx and K's, the following diagnostic toric soft lens was used: 8.8 -3.00 -1.00 x 180 During the diagnostic evalution, the above lens rotated 10 degrees clockwise. The lens ordered should have an axis of 180 degrees Once the correctly ordered lens has been dispensed, the rotational marks should settle at: - ANSWER 10 degrees clockwise When there is slight pooling of fluorescein in the peripheral curve portion of a rigid lens, it indicates: - ANSWER slight edge lift