Highlite lenses - Study guides, Class notes & Summaries

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...

what is the average convergence distance in children - Answer 2mm instead of 3mm in adults what is the refractive index of highlite lenses - Answer 1.70 chem-tempering makes a clear glass lens more impact resistant by placing the lens in a potassium nitrate bath. the lens undergoes a process known as what? - Answer ion exchange what is the formula for the index of refraction - Answer index of refraction=velocity of light in air over velocity of light in other media what i...

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...