NCLE(National Contact Lens Examiners) BUNDLE

A Correct Statement regarding epithelial cells is that they: a)Comprise the posterior layer of the cornea b)Are unable to regenerate c)Comprise the thickest layer of the cornea d) Have the ability to reproduce - Answer d) have the ability to reproduce Which of the following prescripti...

base 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 pos...

optic zone - Answer the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius - Answer this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface...

Diffused Illumination - Answer -Uses widest slit, longest aperture -Light source positioned at an angle of 40º-50º -Used to view overall areas, to observe the ocular adnexa, cornea, sclera, lids, conjunctiva, lens surface, and CL fitting characteristics Direct Illumination - Answer ...

Steep Fluorescein Pattern - Answer Bright green pooling center, very faint green pooling on diameter of lens Flat Fluorescein Pattern - Answer Bright green pooling on diameter of lens, very faint green in center Against-the-rule Astigmatism Pattern - Answer Bright green pooli...

Which of the following medications may affect successful contact lens wear? A. Antacids B. Antihistamines C. Aspirin D. Laxatives - Answer B. Antihistimines Which term refers to a sensitivity to light? A. Prebyopia B. Photophobia C. Pannus D. Ptosis - Answer B. Photophobia ...

adnexa - Answer extraocular structures of the eye which include the eyelids, the orbit, lacrimal glands anterior chamber - Answer the area bounded in front by the cornea and in the back by the lens and filled with aqueous aqueous - Answer a clear, watery solution in the anter...

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 w...

The answer is D. The posterior optical zone will directly affect the lens to cornea relationship of a rigid gas permeable lens. If the posterior optical zone is steepened, it will increase the sagittal depth. If it is flattened, it will decrease the sagittal depth. Changing the power, which is ac...

D. all of the above - Answer The eyelids play an important role in the fitting and wear of contact lenses for which of the following reasons? A. they effect the wettability of the lens serface B. they effect the positioning of the lens C. they are sensitive and generally cause most of the d...

What is the thickest layer of the cornea? - Answer stroma Which corneal layer controls the fluid content of the cornea? - Answer endothelium What is cornea edema? - Answer excess fluid in the stroma that can swell it and lead to loss of visual acuity What kind of contact lenses ...