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Optician demonstrating tinted lenses
An optician demonstrating the range of tints available in lenses for sun glasses during a consultation at his store.
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step 3. Surgery Cataract Eye. Category-B(Clip 1)
step 3. Surgery Cataract Eye. Category-B(Clip 1)
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step 3. Surgery Cataract Eye. Category-B(clip 2)
step 3. Surgery Cataract Eye. Category-B(clip 2)
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Your Friends the Lens ..
Stop motion animation of a pair of lens on an eye <a href='http://www.lisegagne.com/louis/objects.jpg' target='_blank' rel='nofollow'>chart.</a>f='http://www.lisegagne.com/louis/objects.jpg' target='_blank' rel='nofollow'>chart.
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Eye test with lenses
A model is eye tested by an optician who places various lenses in an ophthalmic testing frame.
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Lenses and opticians equipment
A range of opticians lenses being displayed in a box with a single lens removed and fitted in to a testing frame.
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B/W 1936 doctor giving woman eye exam to fit her for contact lenses / newsreel
B/W 1936 doctor giving woman eye exam to fit her for contact lenses / newsreel
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step 6. Surgery Cataract Eye. Category-A(clip 2)
step 6. Surgery Cataract Eye. Category-A(clip 2)
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Triangular prisms splitting rays of white light into constituent colours.
This occurs because the light is refracted when it passes from the air to the glass, as the speed of light in glass is lower than that in air. Light with a shorter wavelength, at the blue end of the spectrum, is refracted more than the...