NCLE Practice Test Practical, Questions with accurate answers. 2022/2023.
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Course
NCLE
Institution
NCLE
NCLE Practice Test Practical, Questions with accurate answers. 2022/2023.
Steep Fluorescein Pattern - Bright green pooling center, very faint green pooling on diameter of lens
Flat Fluorescein Pattern - Bright green pooling on diameter of lens, very faint green in center
Against-the-rule...
NCLE Practice Test Practical , Questions with accurate answers. 2022/2023. Steep Fluorescein Pattern - ✔✔Bright green pooling center, very faint green pooling on diameter of lens Flat Fluorescein Pattern - ✔✔Bright green pooling on diameter of lens, very faint green in center Against -the-rule Astigmatism Pattern - ✔✔Bright green pooling horizontally, faint green pooling vertically With -the-rule Astigmatism Pattern - ✔✔Bright green pooling vertically, faint green pooling horizontally Prism Ballast - ✔✔Common technique to stabilize lens from rotating. Added thickne ss will position lens inferiorly (bottom of cornea) Truncation - ✔✔Cutting off .50mm to 1.50mm of bottom edge of lens to provide stability. Reduces diameter, making a looser fit. Double Slab -off - ✔✔Lens is thicker centrally and thinner at top and bottom of lens. Provides comfort to wearer, but may cause some stability issues. Aspheric Lens Design - ✔✔ Hyperflange - ✔✔Used to correct high riding minus lenses. Myoflange - ✔✔Used to correct low riding plus lenses. Monovision - ✔✔Corrects presbyopia in contact wearers. One eye uses distance (dominant) and the other eye uses reading (resessive) Segment Bifocal - ✔✔Same concept as spectacle bifocal. Must be prism ballast. Often crescent shaped. Toric Lenses - ✔✔Anter ior (front surface), back spherical surface or posterior (back surface), toric back curve Front Toric Lens - ✔✔Corrects a low to moderate amount of corneal astigmatism Back Toric Lens - ✔✔Corrects a mid to high amount of corneal astigmatism Bitoric Lens - ✔✔Corrects 1.50D of corneal astigmatism and high residual astigmatism Aphakic - ✔✔Condition of no crystalline lens Psuedophakic - ✔✔Implant, intraocular lens Corneal Edema - ✔✔Always causes a poor fitting lens Spectacle Blur - ✔✔Temporary blurred vi sion upon switching from contact lenses to eyeglasses Crystalline Lens - ✔✔The main focusing mechanism of the eye The Main Supply of Oxygen to the cornea is provided by - ✔✔Tear Film Keratometry mires which are only clear when the wearer blinks are indi cative of a - ✔✔Steep Fit Keratometry mires which blur immediately following blink are indicative of a - ✔✔Flat Fit
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