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History of optics. Modern ophthalmic lens making machine. Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek philosophers, and the development of geometrical optics in the Greco-Roman world. The word optics is derived from the Greek term ...
Prism spectrometer. A prism spectrometer is an optical spectrometer which uses a dispersive prism as its dispersive element. The prism refracts light into its different colors ( wavelengths ). The dispersion occurs because the angle of refraction is dependent on the refractive index of the prism's material, which in turn is slightly dependent ...
Prism lighting is the use of prisms to improve the distribution of light in a space. It is usually used to distribute daylight , and is a form of anidolic lighting . Prism lighting was popular from its introduction in the 1890s through to the 1930s, when cheap electric lights became commonplace and prism lighting became unfashionable.
Glasses, surgery [3] Frequency. ~2% (children) [3] Strabismus is a vision disorder in which the eyes do not properly align with each other when looking at an object. [2] The eye that is pointed at an object can alternate. [3] The condition may be present occasionally or constantly. [3]
Side effects in adults. Common adverse drug reactions (≥ 1% of people) associated with use of the penicillins include diarrhea, hypersensitivity, nausea, rash, neurotoxicity, urticaria (hives), and superinfection (including candidiasis ). Infrequent adverse effects (0.1–1% of people) include fever, vomiting, erythema, dermatitis, angioedema ...
Children. Digoxin may be prescribed for a child to treat heart defects. Possible side effects in children are: dysrhythmia, nausea, vomiting, a slower-than-normal heart rate and anorexia. [4] Children may demonstrate side effects if they are breastfed. Digoxin is also absorbed by the infant in utero.
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