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Prosthetic eye and glasses made for an injured World War I soldier by pioneering plastic surgeon Johannes Esser. "Making glass eye", c. 1915–1920. Glass eye being moulded under heat, 1938. The earliest known evidence of the use of ocular prosthesis is that of a woman found in Shahr-I Sokhta, Iran [1] dating back to 2900–2800 BC. [2]
A monocle is a type of corrective lens used to correct or enhance the visual perception in only one eye. It consists of a circular lens placed in front of the eye and held in place by the eye socket itself. Often, to avoid losing the monocle, a string or wire is connected to the wearer's clothing at one end and, at the other end, to either a ...
The current European standard, EN 1836:2005, was preceded by the older standards EN 166:1995 (Personal eye protection – Specifications), EN167: 1995 (Personal eye protection – Optical test methods), and EN168: 1995 (Personal eye protection – Non-optical test methods), which in 2002 were republished as a revised standard under the name of ...
They were also easier to adjust when flawed -- glass eyes could not be altered once they had hardened. M&G has loyal customers who have returned over the course of several decades and multiple generations -- like 65-year-old Laurine Cummings, who first came to the Gougelmanns in 1984 after losing her eye to choroidal melanoma at the age of 33.
A Turkish nazar boncuğu Eye beads or nazars – amulets against the evil eye – for sale in a shop.. A naẓar (from Arabic نَظَر , meaning 'sight', 'surveillance', 'attention', and other related concepts), or an eye bead is an eye-shaped amulet believed by many to protect against the evil eye.
A visual prosthesis, often referred to as a bionic eye, is an experimental visual device intended to restore functional vision in those with partial or total blindness. Many devices have been developed, usually modeled on the cochlear implant or bionic ear devices, a type of neural prosthesis in use since the mid-1980s.
The military offers annual replacements for those who qualify, and personnel may request the government issued glasses in addition to several varieties of more attractive eyewear, in clear and tinted lenses, as well as prescription gas mask inserts and inserts for government-funded eye protection ballistic eyewear.
Higher-quality optical-grade glass materials exist (e.g. Borosilicate crown glasses such as BK7 ( n d = 1.51680 , V d = 64.17 , D = 2.51 g/cm³ ), which is commonly used in telescopes and binoculars, and fluorite crown glasses such as the best optical quality low dispersion glass currently in production, N-FK58 made by the German company Schott ...
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