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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.
Treatment options for esotropia include glasses to correct refractive errors (see accommodative esotropia below), the use of prisms, orthoptic exercises, or eye muscle surgery. The term is from Greek eso meaning "inward" and trope meaning "a turning".
Esophoria is an eye condition involving inward deviation of the eye, usually due to extra-ocular muscle imbalance. It is a type of heterophoria. Cause. Causes include: Refractive errors; Divergence insufficiency; Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies.
This page, Glossary of geography terms (N–Z), lists terms beginning with the letters N through Z. Related terms may be found in Glossary of geology , Glossary of agriculture , Glossary of environmental science , and Glossary of astronomy .
Glossary of geography terms (N–Z) lists terms beginning with the letters N through Z. Related terms may be found in Glossary of geology , Glossary of agriculture , Glossary of environmental science , and Glossary of astronomy .
The motor system acts to point both eyes at the target of interest; any offset is detected visually (and the motor system corrects it). Heterophoria only occurs during dissociation of the left eye and right eye, when fusion of the eyes is absent.
Merriam-Webster's Geographical Dictionary ( Webster's Geographical Dictionary, Webster's New Geographical Dictionary) is a gazetteer by the publisher Merriam-Webster. The latest edition was released in 2001, edited by Daniel J. Hopkins and contained over 54,000 entries.
Emotional geography is a subtopic within human geography, more specifically cultural geography, which applies psychological theories of emotion. It is an interdisciplinary field relating emotions, geographic places and their contextual environments. These subjective feelings can be applied to individual and social contexts.
'measure'), is the science and practice of measuring the characteristics of terrain, the shape of the surface of the Earth, and the effects of this surface form on human and natural geography.
Even when the double vision images are made to nearly overlap using optical means such as prisms, the irregular movements prevent binocular fusion. 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.