NCLE Test Questions With Verified Answers

toric - Answer synonymous with astigmatism multifocal - Answer synonymous with presbyopia/c hybrid CL - Answer combination with GP lens center w/ soft lens outer skirt hydrogel contact lens - Answer most frequently prescribed material contain varying amounts of water comfort is immediate silicone hydrogel contact lens - Answer soft contact lens delivers greater oxygen w/o increasing water content (due to oxygen is more soluble in silicone rubber than water soft contact lens wear schedule - Answer daily overnight/continuous flexible gas permeable contact lens - Answer smaller and firmer durable gp contact lens - Answer recommended for Pts w/ irregular corneas excellent for Rxs w/ reading add orthokeratology - Answer nonsurgical way to eliminate or reduce need for eyeglasses or contact lens wear during the day retainer lens - Answer device/appliance worn overnight to gently reshape the surface of the eye after contact lenses are removed(these are removed in the morning providing clear,unaided vision that can last all waking hours hybrid contact lens - Answer provide sharp visual acuity of GP lenses w/ the comfort and wearability of soft contact lenses tears - Answer provide nutrients and oxygen to Cornea 7.8mm - Answer average central corneal curvature 1.37 - Answer Corne index of refraction 43.25D - Answer cornea power cornea surface - Answer aspheric, gradually flattens from center to edge corneal apex - Answer steepest point of Cornea may be found in center of cornea 180 degree meridian - Answer has the least amount of curvature "with the rule" astigmatism 90 degree meridian - Answer has the steepest curvature rigid gp lenses - Answer for irregular astigmatism rigid lens surface replaces irregular corneal surface allows light to be bent so it falls more clearly on the retina cornea vertical diameter - Answer ~10.6mm cornea horizontal diameter - Answer ~11.7mm corne thickness - Answer Center:.5mm-.6mm periphery: 1.0mm