A soft toric lens - Study guides, Class notes & Summaries

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 +1.00 x75 When a keratometer is being calibrated, which of ...

NCLE Advanced Certification Exam Questions and Answers Already Passed 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 d...

1. The sagittal depth of a rigid gas permeable contact lens can be altered without changing the diameter by: A. Changing the power B. Changing the edge design C. Changing the radius of curvature of the anterior optical zone D. Changing the radius of curvature of the posterior optical zone - 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 sa...

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...

NCLE Practice Test Questions And Answers Latest Update 2023/2024 | 100% Verified. A long-term, successful, hydrogel contact lens wearer suddenly develops dry eyes. Which of the following is most likely to cause this problem? a) Use of oxidative solution b) use of rewetting drops c) use of anti-histamines d) Wearing of lenses in the wrong eyes - Answer c) use of anti-histamines During slit-lamp evaluation, on upward gaze, a patient's soft contact lenses move 0.5 to 1mm when the patient bl...

NCLE Test Questions and Answers Already Graded A 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 ...

NCLE Practice Test Questions And Answers Latest Update 2023/2024. 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...

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 pooling horizontally, faint green pooling vertically With-the-rule Astigmatism Pattern - Answer Bright green pooling vertically, faint green pooling horizontally Prism Ballast - Answer Common technique to stabilize le...

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

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 is- a. sclerotic scatter ...