Study guides, Class notes & Summaries

NCLE Pre-Test 2024. annular bifocal contact - ANSWER A lens with distance portion ground into the center of the lens and the near portion ground into the periphery aphakic lenses - ANSWER lenses designed for post-cataract fitting apical zone of cornea - ANSWER the central portion of the cornea with a constant radius of curvature. Also called the corneal cap. artificial tears - ANSWER medications, many of them over the counter, to treat dry eyes aspheric lens - ANSWER A non-spherical...

NCLE EXAM QUESTIONS 2024.Assessment of the quality of the peripheral curves (blends of a rigid contact lens) is achieved by the use of the- a. profile analyzer b. shadow graph c. keratometer d. burton light - ANSWER a. profile analyzer Contact lens power should be specified in- a. back vertex power b. sphero-cylinder power c. power in situ d. posterier apical radius - ANSWER a. back vertex power The slit-lamp illumination that gives an overall view of the cornea but limits detail i...

NCLE Practice Question Guide curve - ANSWER refers to the radius of curvature of the central posterior surface of the lens. It may be expressed in diopters of surface power (D) or in millimeters (mm) of radius or curvature. optical zone - ANSWER the chord diameter over which the base curve extends on the posterior surface of the contact lens, described in millimeters secondary or intermediate curves - ANSWER lies between the base curve and the peripheral curve on the posterior lens surfac...