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Fd trifocal
| Глоссарий терминов и сокращений по оптическим линзам |
Traditional near flat top segment positioned on a full lower portion intermediate lens.
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Trifocal, английский
A lens having three areas of viewing, each with its own focusing power. usually, the upper part is used for distance; the lower power for close vision, such as reading; and the middle area for “arm’s length” vision.
Traditional, английский
A традиционный grammar
Intermediate, английский
- Between two others.
- Промежуточный
- Промежуточное звено
- Chemical term for an igneous rock containing 54 to 62% silica and usually
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Fine motor skills, английский
The ability to coordinate hand and finger movements.
Far point, английский
That point upon the visual axis of the eye which is sharply imaged on the retina when the accommodation is relaxed. the far point of a normal eye lies at infinity.
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