Diffused Illumination – -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 – -Most important/useful illumination -Light source positioned at an angle of 40º-50º to oculars -Light beam and oculars are focused in coincidence on area being evaluated -The difference in the illumination is not ...

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 thickness ...

NCLE Advanced Certification Exam with COMPLETE SOLUTION | 459 Questions with 100% Correct Answers 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...

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

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

• NCLE Practical broken down based on the ABO-NCLE practical Exam Candidate Handbook Practical Test Specifications sheet

Which of the following medications may affect successful contact lens wear? a. antacids b. antihistamines c. aspirin d. laxatives - antihistamines Which term refers to a sensitivity to light A.presbyopia B.Photophobia C.Pannus D. Ptosis - 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 - Against the rule astigmatism The cornea receives nutrients...

The cornea is clear, and must remain clear, which means that it must be _____, have regular cell structure, and be free from _______. avascular, scarring The layers of the cornea from the outermost layer to the innermost layer in order are: Epithelium Bowman's Layer Stroma Descemet's membrane Endothelium In a normally healthy eye, minor corneal abrasions of the cornea are generally repaired within ____ hours by mitosis and migration of fellow cells. 48 Which layer of the cornea...

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...

Which of the following medications may affect successful contact lens wear? A. Antacids B. Antihistamines C. Aspirin D. Laxatives - B. Antihistimines Which term refers to a sensitivity to light? A. Prebyopia B. Photophobia C. Pannus D. Ptosis - B. Photophobia The following is an example of what type of astigmatism? K's 42.50 @ 180 / 40.50 @ 90 A. With the Rule Astigmatism B. Lenticular Astigmatism C. Against the Rule Astigmatism D. Irregular Astigmatism - C. Against the R...