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Chicken eyeglasses, also known as chicken specs, chicken goggles, generically as pick guards, and under other names, [2] were small eyeglasses made for chickens intended to prevent feather pecking and cannibalism. They differ from blinders in that they allow the bird to see forward, whereas blinders do not. One variety used rose-colored lenses ...
Stereoscope. A stereoscope is a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye views of the same scene, as a single three-dimensional image. A typical stereoscope provides each eye with a lens that makes the image seen through it appear larger and more distant and usually also shifts its apparent ...
Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. The eye that is pointed at an object can alternate. The condition may be present occasionally or constantly. If present during a large part of childhood, it may result in amblyopia, or lazy eyes, and loss of depth perception.
She continues, "Do not force nor encourage your pet to look at the eclipse, as staring at the sun can cause ocular damage in pets just like it does in people." Shop Now Solar Eclipse Glasses AAS ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
International Evaporative Cooling Dog Pad. This unique cooling mat is soaked in water for a few moments to activate. The fabric then slowly releases water to keep your dog cool. After that, your ...
The longer the focal length of the eyepiece, the greater the eye relief. Typical telescopic sights may have eye relief ranging from 25 mm (0.98 in) to over 100 mm (3.9 in), but telescopic sights intended for scout rifles or handguns need much longer eye relief to present a non-vignetted image.
The average dog is as knowledgable as a two-year-old. 8. Dogs have three eyelids. Unlike humans who have two eyelids per eye — an upper and a lower eyelid — the eye of a dog consists of three ...