0_Wizard
Hello, I just got back from the opticians and I'm proud to say I still have 20/20 vision!
Visual acuity (VA) commonly refers to the clarity of vision.
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Visual acuity
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Optician
An optician, or "dispensing optician", is a technical practitioner who designs, fits and dispenses corrective lenses for the correction of a person's vision. Opticians determine the specifications of various ophthalmic appliances that will give the necessary correction to a person's eyesight. Some registered or licensed opticians also design and fit special appliances to correct cosmetic, traumatic or anatomical defects. These devices are called shells or artificial eyes. Other registered or licensed opticians manufacture lenses to their own specifications and design and manufacture spectacle frames and other devices.
Optometry
Optometry is a health care profession which involves examining the eyes and applicable visual systems for defects or abnormalities as well as the medical diagnosis and management of eye disease. Traditionally, the field of optometry began with the primary focus of correcting refractive error through the use of spectacles. Modern day optometry, however, has evolved through time so that the education curriculum additionally includes intensive medical training in the diagnosis and management of ocular disease in countries where the profession is established and regulated. Optometrists (also known as Doctors of Optometry in the US and Canada for those holding the O.D.
Association of British Dispensing Opticians
The Association of British Dispensing Opticians (ABDO) is the main professional association for opticians in the UK. ABDO was formed in 1986 from the merger of the Association of Dispensing Opticians and the Faculty of Dispensing Opticians, following the Health and Social Security Act of 1984. The profession of dispensing opticians has been regulated voluntarily since 1926 and, as a statutory profession, by the Opticians Act since 1958. Since such time the conduct of dispensing opticians has thus been regulated partly by legal provisions, by advice given by the General Optical Council, and by ABDO’s own Advice to Fellows.
General Optical Council
The General Optical Council (GOC) is an organisation in the United Kingdom which maintains a register of opticians and regulates the services provided by dispensing opticians and optometrists (ophthalmic opticians). The stated function of the GOC is ""to protect the public and promote high standards of professional conduct and education amongst opticians"". In order to work as (dispensing) opticians or optometrists in the UK, individuals must demonstrate to the GOC that they are suitably qualified and fit to practise. The GOC also maintains a register of companies who carry on business as opticians.
No Man's Sky
No Man's Sky is an action-adventure survival video game developed and published by the indie studio Hello Games for PlayStation 4 and Microsoft Windows. It was released worldwide in August 2016. The game is built around four pillars: exploration, survival, combat, and trading. Players are free to perform within the entirety of a procedurally generated deterministic open universe, which includes over 18 quintillion planets. Through the game's procedural generation system, planets have their own ecosystems with unique forms of flora and fauna, and various sentient alien species may engage the player in combat or trade within planetary systems.
Optics and vision
Visual perception is the ability to interpret information and surroundings from visible light reaching the eye. The resulting perception is also known as eyesight, sight or vision. The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in psychology, cognitive science, neuroscience and molecular biology. The visual system in humans allows individuals to assimilate information from the environment. The act of seeing starts when the lens of the eye focuses an image of its surroundings onto a light-sensitive membrane in the back of the eye, called the retina.
Visual acuity
Visual acuity (VA) commonly refers to the clarity of vision. Visual acuity is dependent on optical and neural factors, i.e., (i) the sharpness of the retinal focus within the eye, (ii) the health and functioning of the retina, and (iii) the sensitivity of the interpretative faculty of the brain. A common cause of low visual acuity is refractive error (ametropia), or errors in how the light is refracted in the eyeball. Causes of refractive errors include aberrations in the shape of the eyeball, the shape of the cornea, and reduced flexibility of the lens. Too high or too low refractive error (in relation to the length of the eyeball) is the cause of nearsightedness (myopia) or farsightedness (hyperopia) (normal refractive status is referred to as emmetropia).