Toric contact lenses - Study guides, Revision notes & Summaries

which of the following is not important to document in medical records for contact lens patients? - 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? - 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 fo...

NCLE Test Questions With Answers Latest Updated 2024 (Graded A+) 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 prescriptions indicates against-the-rule astigmatism? a)-4.50 +1.00 x75 b)-4.50 +1.00 x 180 c)-4.50 -1.00 x 165 d)4.50 -1.00 x 180 - Answer a)-4.50 +1....

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...

how long should the tear film remain uniform over the cornea after a normal blink( tear break-up time)? CORRECT ANSWER-10-15 seconds what is the normal reading for the Schirmer tear test? CORRECT ANSWER-15-20 mm in 5 sec lenses that contain 70% or more water are CORRECT ANSWER-high-water-content lenses surfactant cleaners for soft and rigid contact lenses contain soaps detergent to help remove _____? CORRECT ANSWER-oil, makeup, lipids the most common instrument used for measuring the...

Ncle Advanced Exam Questions And Answers Latest Update 2023/2024 | 100% Verified. The classic model of the pre-corneal tear film is composed of three layers what are they? - Answer Lipids aqueous mucin The average ph value of the human tear is a. 6.6 b. 7.4 c. 7.8 d. 10.0 - Answer B. 7.4 If the manufacturers guidelines suggest a minimum of four hours for this disinfection, what would you suggest to the patient A.Never leave lenses in disinfectant overnight B.2 to 3 hours is probably en...

NCLE Advanced Certification Exam Questions With Answers 2023-2024 Graded A+. The wetting angle of a rigid gas permeable material describes how a fluid spreads over the surface. It is important to remember, however, that wetting angle is a description of the material outside of the patient's natural ocular environment. Within minutes of insertion, a rigid lens is encapsulated in the natural tear mucin and the wetting angle of the material is no longer important. - Answer 8. Which of the fol...

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 accomplished by changing the anterior optical zone, will not affect the sagittal depth of the lens, nor will changing its edge design. - Answer 1. The sagittal depth of a rigid gas permeable contact len...

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 must be stabilized (not rotate) on the eye for good vision? - ANSWER toric contact lenses Concentric vs Aspheric Multifocal Lens Design - ANSWER aspheric multifocal lenses have a gradual change in power from d...

Which of the following medications may affect successful contact lens wear? a. antacids b. antihistamines c. aspirin d. laxatives - Answer antihistamines Which term refers to a sensitivity to light A.presbyopia B.Photophobia C.Pannus D. Ptosis - Answer Photophobia The following is an example of what type of astigmatism? K's 42.50 @180 /40.50 @90 A. with the rule B. Lenticular astigmatism C.Against the rule D. Irregular astigmatism - Answer Against the rule astigmatism T...

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 must be stabilized (not rotate) on the eye for good vision? - ANSWER-toric contact lenses Concentric vs Aspheric Multifocal Lens Design - ANSWER-aspheric multifocal lenses have a gradual change in power from d...