Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun optics
Spectacles withcorrective lenses that have threedifferent powers pereye .
Etymologies
Sorry, no etymologies found.
Examples
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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I need new trifocals — where can I send you my bill?
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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Got exam, two pairs of graduated trifocals and frames for a little over $2000 pesos recently. johanson
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Bartleby said, looking over the top of his trifocals at a smallish stack of documents that I concluded must be important, as well as the reason I was at that moment sitting in the Chief Executive Officer's office.
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Progressive lenses and trifocals have intermediate-range correction built in but it's typically so narrow that you have to hold your head at precisely the right angle to hit the sweet spot, which can wreak havoc on neck muscles after just a few minutes.
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Previous studies have found that multifocal glasses, which include bifocals, trifocals and progressive lenses, compromise depth perception and impair balance.
Comments
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