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oculus sinister (left eye) OU oculus uterque (both eyes) PD Pupillary distance PERRLA Pupils equal, round, reactive to light and accommodation PH Pinhole see Pinhole occluder and Visual_acuity#Legal_definitions: PHNI Pinhole No Improvement see Pinhole occluder and Visual_acuity#Legal_definitions: PHVA Pinhole Visual Acuity: PL Perception of light
Printable version; In other projects ... This is a list of common abbreviations in the English language ... optical art [35] optical operation
Acronym Finder (AF) is a free, online, searchable dictionary and database of abbreviations (acronyms, initialisms, and others) and their meanings. The entries are classified into categories such as Information Technology, Military/Government, Science, Slang/Pop Culture etc. It also contains a database of the United States and Canadian postal codes.
The Glossary of Digital Photography. Rocky Nook, 2007, ISBN 1-933952-04-0. Peres, Michael R. The Focal Encyclopedia of Photography, Fourth Edition. Focal, 2007, ISBN 0-240-80740-5. Taylor, Phil. Digital Photographic Imaging Glossary. Trafford, 2006, ISBN 1-55369-253-5. Glossary, issued by Nikon, explaining the Nikkor lens codes. Retrieved 2011 ...
Optics is the science of light and its interaction with matter.. Optics is a broad subject area. Much of the content is covered in subcategories. Many basic concepts are covered in Category:Geometrical optics, in which light is considered as if it were composed of rays.
Oculus means eye. OS is an abbreviation for oculus sinister, Latin for left eye from the patient's point of view. OU is an abbreviation for oculi uterque, Latin for both eyes. N.B.: In some countries, such as the United Kingdom, RE (right eye), LE (left eye), and BE (both eyes) are used. Sometimes, just right and left are used.
The human eye functions by focusing light onto a layer of photoreceptor cells called the retina, which forms the inner lining of the back of the eye. The focusing is accomplished by a series of transparent media. Light entering the eye passes first through the cornea, which provides much of the eye's optical power.
Distance PD is the separation between the visual axes of the eyes in their primary position, as the subject fixates on an infinitely distant object. [2] Near PD is the separation between the visual axes of the eyes, at the plane of the spectacle lenses, as the subject fixates on a near object at the intended working distance. [3]