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Prentice's rule is a formula to calculate the amount of prism correction in a lens based on decentration and lens power. It can be used for prescribing, tolerance control, or determining unprescribed prism in eyeglasses.
Some ADB headlights work like digital projectors, using a million or more LED pixels to project light patterns on the road. Even in the US, some Mercedes vehicles can project symbols like arrows ...
Diplopia is the simultaneous perception of two images of a single object, which may be voluntary or involuntary. It can result from various ophthalmologic, neurological, or systemic disorders, and can be classified as monocular or binocular, acute or chronic, and suppressed or not.
A corrective lens is a device that improves visual perception by correcting refractive errors. Learn about the different types of lenses, such as glasses, contact lenses, and intraocular lenses, and how they are prescribed and fitted by eyecare professionals.
Bioptics are a pair of lenses that magnify distance vision for those with severely impaired eyesight, especially albinism. They can be attached to glasses or binoculars, and some can be used for bioptic driving with training and approval.
The patient is asked to fixate on a target while the examiner places a 4 prism dioptre base-out prism over the patient's eye, observing the response of the fellow eye. [ 1 ] The target is a single isolated distance target of approximately 1-2 lines better than best corrected acuity at distance.
Vision Pro goggles require at least some use of a driver's attention and hands, two things that are always supposed to be ready for takeover while using a modern driving assistance system that is ...
A Fresnel lens is a compact lens that reduces the amount of material required compared to a conventional lens by dividing it into concentric sections. Learn how Augustin-Jean Fresnel invented and improved this lens for use in lighthouses, and how it works with refraction and reflection.
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