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Optical refers to the eyes or vision. The optical lenses must be ground carefully.
Although the alignment of the lenses was optically correct he couldn't see anything at all through them.
Lenses can help people to see better. Lenses are needed in telescopes for astronomers to see distant things in the night sky.
All microscopes have lenses. Some types of lenses are eyepiece lenses, objective lenses, and condenser lenses.
l can see clear through glasses lenses in class.
Align the two poles evenly.When the sun and moon align, there is an eclipse.
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a sentence with the word variety
Astigmatism is a medical condition. One in a million patients have it.
It is lenses which Benjamin Franklin invented.
All microscopes have lenses. Some types of lenses are eyepiece lenses, objective lenses, and condenser lenses.