астигматизм

астигматизм

A misshape of the eye, where vision is blurred by an irregularly shaped cornea. The cornea, instead of being shaped like a sphere, is ellipsoidal (like an egg) and reduces the cornea’s ability to focus light.

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行业/领域：眼镜
类别眼镜
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ережелік астигматизм

眼镜; 验光; 隐形眼镜; 眼科手术

With the rule astigmatism has an axis of about 180 degrees (when Rx is written in minus cylinder form). "Against the rule" astigmatism has the axis at about 90 degrees. Both forms ...

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Inability to accommodate focus difference between distance vision and near (reading)

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Fashion tints or tints to protect light-sensitive eyes are also available in a wide range or colors, including gray, rose, yellow, G 15, brown, blue, purple and gradient tint ...

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眼镜; 眼镜

These lenses automatically turn dark in bright light and lighten indoors. The lenses are activated by ultraviolet light and will not darken behind the protection of your ...

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眼镜; 眼镜

A lens coating, either on or embedded in the lens, that filters UV radiation.

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眼镜; 眼镜

Safety standards that must be met for glasses to be considered safety glasses. Watch the Oakley High Velocity Impact video to see the results!

асферикалық линзалар

眼镜; 眼镜

Lenses that provide special visual and cosmetic benefits for stronger corrections and increase edge to edge clarity. Flatter than conventional lenses, aspheric lenses reduce the ...

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行业/领域：水体类别湖区

Гурон көлі

The second largest of the Great Lakes of North America, bounded on the west by Michigan (U. S. ) and on the north and east by Ontario (Can. ). The ...