{ "@context": "https://schema.org", "@type": "Organization", "name": "Brainscape", "url": "https://www.brainscape.com/", "logo": "https://www.brainscape.com/pks/images/cms/public-views/shared/Brainscape-logo-c4e172b280b4616f7fda.svg", "sameAs": [ "https://www.facebook.com/Brainscape", "https://x.com/brainscape", "https://www.linkedin.com/company/brainscape", "https://www.instagram.com/brainscape/", "https://www.tiktok.com/@brainscapeu", "https://www.pinterest.com/brainscape/", "https://www.youtube.com/@BrainscapeNY" ], "contactPoint": { "@type": "ContactPoint", "telephone": "(929) 334-4005", "contactType": "customer service", "availableLanguage": ["English"] }, "founder": { "@type": "Person", "name": "Andrew Cohen" }, "description": "Brainscape’s spaced repetition system is proven to DOUBLE learning results! Find, make, and study flashcards online or in our mobile app. Serious learners only.", "address": { "@type": "PostalAddress", "streetAddress": "159 W 25th St, Ste 517", "addressLocality": "New York", "addressRegion": "NY", "postalCode": "10001", "addressCountry": "USA" } }

akhtar lab Flashcards

(13 cards)

1
Q

Trivex is not a mid index lense, safety lens for active adults, High index lense that children should always wear, Great lens for clarity and weight

A

High index lense that children should always wear

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2
Q

Plano lenses contain

A

no prescription

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3
Q

Measuring a trifocal from the top of the segment to the middle line for height intermediate, length intermediate, width or trifocal or none of the above

A

height

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4
Q

Progressive lenses can be prescriped as a multifocal with continuous vision, a lens most like a wears natural vision, a lens design that can custom design to fit a persons RX and visual axis

A

All of the above

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5
Q

Progressive lens design has helped us identify, fit, and neutralize lenses What are they, identical lines, symbols and coats, unique markings, squiggles and marks or coats and arts

A

unique markings

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6
Q

Glass lenses are _ in most materials

A

more stable

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7
Q

Trivex lens material has Exceptional optical clarity, impact resistance similar to poly, and a specific gravity of 1.11. All of the above

A

all of the above

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8
Q

High-index lenses reduce magnification, reduce minification, facial distortion, all of the above or none of the above

A

All of the above

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9
Q

Anti reflective treatment in coating allows less transmission of light blue lens or transmission of light blue lens in the top coating of the lens, or allows some transmission of light

A

Allows more transmission of light

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10
Q

Experts report that as much as __% of damage to our eyes occur before the age of 18

A

80%

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11
Q

The most harmful UV read lens or by the focal meter is A, B, C or D

A

C

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12
Q

polarized lenses are horizontal light waves, parallel lightwaves, Vertical lightwaves,or

A

Vertical light waves

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13
Q

Plastic cr-39 are more resistant to scratches if they are treated by front and back surface, the front surface, the back surface only or cr 39 lens already come with scratch coat.

A

Front and back surfaces

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