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Roof prism. A roof pentaprism used in Single-lens reflex cameras; the lower right face is the roof ( dach ). A roof prism, also called a Dachkanten prism or Dach prism (from German: Dachkante, lit. "roof edge"), is a reflective prism containing a section where two faces meet at a 90° angle, resembling the roof of a building and thus the name.
A. Accommodation (vertebrate eye) Accommodative infacility. American Academy of Optometry. American Society of Cataract and Refractive Surgery.
The Šidák correction is derived by assuming that the individual tests are independent. Let the significance threshold for each test be α 1 {\displaystyle \alpha _{1}} ; then the probability that at least one of the tests is significant under this threshold is (1 - the probability that none of them are significant).
Astigmatism may be corrected with eyeglasses, contact lenses, or refractive surgery. Glasses are the simplest and safest, although contact lenses can provide a wider field of vision . Refractive surgery can eliminate the need to wear corrective lenses altogether by permanently changing the shape of the eye but, like all elective surgery, comes ...
Box office. $339,461 [2] The Lady in the Car with Glasses and a Gun ( French: La Dame dans l'auto avec des lunettes et un fusil) is a 2015 French-Belgian mystery thriller film directed by Joann Sfar and starring Freya Mavor, Benjamin Biolay, Elio Germano, and Stacy Martin. It is based on the 1966 novel by Sébastien Japrisot [3] [4] and a ...
The prismatic lenses of the belay glasses are arranged so as to bend light from above through total internal reflection into the observer's eye, allowing the belayer to observe the climber while maintaining a comfortable head/neck position. The design based on the eyeglasses frame provides for a split field of vision: the peripheral field ...