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Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex. Light will be bent towards the base and the image will be shifted towards the apex.
The name horror fusionis (Latin phrase literally meaning "fear of fusion") arises from the notion that the brain is, or at least appears to be, actively preventing binocular fusion. The condition is an extreme type of binocular fusion deficiency. [1]
Prism spectacles with a single prism perform a relative displacement of the two eyes, thereby correcting eso-, exo, hyper- or hypotropia. In contrast, spectacles with prisms of equal power for both eyes, called yoked prisms (also: conjugate prisms, ambient lenses or performance glasses) shift the visual field of both eyes to the same extent.
If the patient saw a red line to the right and white light to the left, they are said to have esotropia or esophoria (uncrossed diplopia) in which base out (BO) prisms of increasing strength are used until the lines are superimposed.
A Schmidt–Pechan prism is a type of optical prism used to rotate an image by 180°. These prisms are commonly used in binoculars as an image erecting system. The Schmidt–Pechan prism makes use of a roof prism section (from the German: "Dachkante", lit. roof edge ).
The Justice Department and several states are expected to file a lawsuit as soon as Thursday against Live Nation Inc, citing alleged antitrust violations at least in part due to the market ...
In geometry, the pentagrammic prism is one of an infinite set of nonconvex prisms formed by square sides and two regular star polygon caps, in this case two pentagrams. It is a special case of a right prism with a pentagram as base, which in general has rectangular non-base faces.
KHARKIV, Ukraine (Reuters) -Russian strikes on a crowded DIY hardware store and a residential area in the Ukrainian city of Kharkiv on Saturday killed at least six people and injured dozens, local ...
The Vancouver Island Regional Correctional Centre (VIRCC) is a Regional Correctional Centre that is located in the District Municipality of Saanich, Vancouver Island, British Columbia, Canada. It lies within metropolitan Victoria, British Columbia, in its northwest suburbs.
Fender benders mean serious high-tech repairs now. Auto body repair was a pretty straightforward business not that long ago. When metal got bent in a crash, someone needed to unbend it. It was a ...