Q&A Chapter 3 Lens Form & Analysis
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | steeper
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| The larger the sphere the _______ the curve. | show 🗑
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| The smaller the sphere the _______ the curve. | show 🗑
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| show | meniscus
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| show | minus
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| A convex lens is known as a ____ lens | show 🗑
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| What is another name for a bi-concave lens? | show 🗑
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| Distortions inherent in any lens with power are known as... | show 🗑
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| show | The Lens Clock
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| The Lens Clock is calibrated for what index of refraction? (the number not the name) | show 🗑
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| True or False: The Lens Clock can check for slab off. | show 🗑
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| show | False
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| show | 1.53
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| show | astigmatism
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| show | Vertex Distance
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| A +10.00 lens has moved away from a patient's eyes by 5mm. What is the power of the lens for the patient now? | show 🗑
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| show | -10.50
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| show | +9.50
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| A -10.00 lens has been moved away from a patient's eyes by 5mm. What is the power of the lens for the patient now? | show 🗑
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| show | Refracted Vertex Distance
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| What does FVD stand for? | show 🗑
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| True or False: A distometer can accurately measure vertex distance. | show 🗑
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| show | False
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| show | +/- 7.00
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| What is the Base Curve for the power ranges of Plano to +2.00 | show 🗑
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| show | +4.00
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| What is the Base Curve for the power ranges of +5.50 to +8.75 | show 🗑
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| show | minus concave
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| show | more
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| A larger sphere will have ____ power. | show 🗑
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| show | smaller
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| An increase in plus power in the base curve makes objects appear ______ than before. | show 🗑
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| Higher index materials create lenses with natural _______ base curves. | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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