What is a cyl - Study guides, Class notes & Summaries

How do RGPs improve visual optics? : They are able to fill the gaps and neutralise corneal irregularity. What is the first diagnostic clue to keratoconus? : Observations made during retinoscopy -Scissoring reflex -Charleux oil droplet sign How to do retinoscopy on a keratoconic patient? : Use any portion of the ret-reflex that seems to be more distinct/brighter and attempt to neutralise it. How to refract a keratconic patient? : -Use LARGE steps according to just noticeable difference...

Base Curve - Curvature of the front of the lens How is Cyl ground on a minus cyl lens? - Single curve on the front. Cyl ground on the back How is cyl ground on a plus cyl lens? - Flattest curve on the front. Old way of doing it do to cosmetics What is Vogels formula used for? - Creating best form and n standard surfacing Vogel's Formula (+ lenses) - Spherical equivalent + 6.00 Vogel's Formula (- lenses) - Spherical equivalent + 6.00 / 2 Corrected Curve Theory rules: - #1 ocul...

Base Curve - Curvature of the front of the lens How is Cyl ground on a minus cyl lens? - Single curve on the front. Cyl ground on the back How is cyl ground on a plus cyl lens? - Flattest curve on the front. Old way of doing it do to cosmetics What is Vogels formula used for? - Creating best form and n standard surfacing Vogel's Formula (+ lenses) - Spherical equivalent + 6.00 Vogel's Formula (- lenses) - Spherical equivalent + 6.00 / 2 Corrected Curve Theory rules: - #1 ocular curve...

With their glasses on and left eye covered, a patient can only read 2 letters on the 20/30 line but can read all of the line above. How would you record this VA? a.VA sc 20/30 +2 OS b.VA cc 20/25 -3 OD c.VA cc 20/40 +2 OD d.VA sc 20/40 -1 OS correct answers b.VA cc 20/25 -3 OD When evaluating a patient who has endured recent head trauma, what is the most important question to ask the patient? a.When did you get hit in the head? b. Did you see stars or spots after the accident? c.Did y...

NCLE Contact Lens Exam 2: Questions and answers, VERIFIED/ Selection of Toric lens depends on: - 1) ocular health and exam findings 2) agreement with patient on which best fits their needs frequency of replacement depends on tendency for coatings, wearing schedule, etc Other things to keep in mind for toric follow ups and ordering - Order trial lens and perform f/u before ordering multipacks -Power should be close enough to be functional and allow adaption -VAs with trials can be 20/15...

NCLE Contact Lens Exam 2 Questions and answers, rated A+ Selection of Toric lens depends on: - 1) ocular health and exam findings 2) agreement with patient on which best fits their needs frequency of replacement depends on tendency for coatings, wearing schedule, etc Other things to keep in mind for toric follow ups and ordering - Order trial lens and perform f/u before ordering multipacks -Power should be close enough to be functional and allow adaption -VAs with trials can be 20/15 t...

NCLE Contact Lens Exam 2 Questions and answers, rated A+/ VERIFIED/ Selection of Toric lens depends on: - -1) ocular health and exam findings 2) agreement with patient on which best fits their needs frequency of replacement depends on tendency for coatings, wearing schedule, etc Other things to keep in mind for toric follow ups and ordering - -Order trial lens and perform f/u before ordering multipacks -Power should be close enough to be functional and allow adaption -VAs with trials c...

NCLE Contact Lens Exam 2 Questions with correct Answers Selection of Toric lens depends on: - ️️ 1) ocular health and exam findings 2) agreement with patient on which best fits their needs frequency of replacement depends on tendency for coatings, wearing schedule, etc Other things to keep in mind for toric follow ups and ordering - ️️ Order trial lens and perform f/u before ordering multipacks -Power should be close enough to be functional and allow adaption -VAs with trials can ...

Selection of Toric lens depends on: - Answer 1) ocular health and exam findings 2) agreement with patient on which best fits their needs frequency of replacement depends on tendency for coatings, wearing schedule, etc Other things to keep in mind for toric follow ups and ordering - Answer Order trial lens and perform f/u before ordering multipacks -Power should be close enough to be functional and allow adaption -VAs with trials can be 20/15 to 20/25 if exact power is not available Dem...

What are the 4 lenses that you can use as a BCL? - correct answer PAAU 1. Pure Vision (30d CW) 2. Air Optix Night & Day Aqua (30d CW) 3. Acuvue Oasys (1-7d EW) 4. UCL (7d EW) If a BCL is required for longer than 3 days what material would be best? - correct answer SiHy If you need a medication to deposit within the BCL, what material would be best at holding and delivering topical medicaitons?...