Steeper base curve - Study guides, Class notes & Summaries

optic zone - ANSWER-the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius - ANSWER-this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - ANSWER-occurs when the posterior radius of curvature is decreased ...

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 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 When a keratometer is being calibrated, which of the following targets will provide the most reliable r...

NCLE basic Exam Kit with Correct Answers What is the Secondary/intermediate curve? - Answer -The curve on the posterior side of the contact lense between the base curve and peripheral curve. Usually 0.7mm to 1.6mm flatter than the base curve radius. The width is affected by the OZ diameter and peripheral width. What is the peripheral curve? - Answer -The outermost curve on the posterior side of the contact lens. It clears the flatter periphery and prevents lens impingement in the limbal are...

optic zone -Answer the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius -Answer this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve -Answer occurs when the posterior radius of curvature is decreased (i.e...

NCLE Review Questions DK/L Stands for: a. oxygen permeability, b. thermal conduction, c. oxygen transmissibility, d. wettability - C. Oxygen Transmissibility A prism ballast, trunctated lens is on a left eye. The cylinder axis is 90 degrees. Prism base is noted to rotate 15 ddegrees nasally. What cylinder axis shoud be ordered to compensate for the rotation? a. 95, b. 105, c. 110, d. 75, e. 80 - B. 105 Small superficial linear stains are characteristic of? a. foreign particles unde...

optic zone - the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius - this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve - occurs when the posterior radius of curvature is decreased (i.e. 8.4 to 8.1 ...

FINAL/OLD: 4- RGP Fluorescein Pattern Evaluation Qs&As 2024 A+ Review How will an area of pooling appear on slit lamp? - ANS-bright green How will a thin tear layer of contact of lens to cornea appear on slit lamp? - ANS-dark or black Smaller dioptric base curve is __________________ (steeper/flatter)? - ANS-flatter Smaller mm base curve is __________________(steeper/flatter)? - ANS-steeper What are the 3 types of fluorescein patterns you may see on a GP lens? - ANS...

NCLE Exam Prep Questions and Answers Latest Update optic zone -Answer the central portion of a contact lens which contains the refractive power and generally corresponds to the central corneal cap posterior apecal radius -Answer this term is generally used in reference to spin-cast soft lenses. the curvature of the posterior surface of the lens changes with the refractive power. the radius of curvature is measured at the apex of the posterior surface. steeper base curve -Answer occurs w...

Which Curve is the Flattest? A) 7.5 mm B) 44.75 D C) 7.6 mm D) 45.50 D - Answer 7.6 mm Inflammation of the Eyelids is Called : A) Palpebritis B) Keratitis C) Conjunctivitis D) Blepharitis - Answer Blepharitis The Base Curve of a Rigid Lens was Ordered at 7.75 mm but Received at 7.85 mm. The Lens is _______ than ordered. A) 0.50 D Flatter B) 0.50 D Steeper C) 1.00 Flatter D) 1.00 Steeper - Answer 0.50 D Flatter The Fairness To Contact Lens Consumers Act of 2003 wa...

The first successful contact lenses which were originally molded to conform to the shape of the cornea were known as - Scleral/Haptic lenses Corneal contact lenses: - are the most common design for rigid and gas permeable lenses. The majority of soft lenses fit today are: - semi-scleral A liquid coming in contact with a hydrophilic lens material with a relatively small wetting angle would be likely to: - spread evenly over its surface A contact lens with diameter larger than that of th...