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Even moderately powered lasers can cause injury to the eye. High power lasers can also burn the skin. Some lasers are so powerful that even the diffuse reflection from a surface can be hazardous to the eye. Diagram of a human eye. The coherence and low divergence angle of laser light, aided by focusing from the lens of an eye, can cause laser ...
Flash blindness is an either temporary or permanent visual impairment during and following exposure of a varying length of time to a light flash of extremely high intensity, such as a nuclear explosion, flash photograph, lightning strike, or extremely bright light, i.e. a searchlight, laser pointer, landing lights or ultraviolet light. [1]
Cataracts are the greying or opacity of the crystalline lens, which can be caused in children by intrauterine infections, metabolic disorders, and genetically transmitted syndromes. [56] Cataracts are the leading cause of child and adult blindness that doubles in prevalence with every ten years after the age of 40. [57]
The Protocol does not prohibit attacks against binoculars, periscopes, telescopes, and other optical equipment because it was unknown whether laser attacks on such devices could cause permanent blindness. [4] Article 3 allows for attacks on electronic optical equipment, because damaging it would not cause human injury. [4]
Manila accuses China of using laser light to cause ‘temporary blindness’ of ship’s crew Chinese patrol boat fires ‘blinding’ military-grade laser in clash with Philippines coast guard ...
The dazzler can be seen at the top-right, located behind the gunner thermal sight. Weapons designed to cause permanent blindness are banned by the 1995 United Nations Protocol on Blinding Laser Weapons. Dazzlers intended to cause temporary blindness or disorientation fall outside this protocol. [citation needed]
Researchers then analyzed the rate of patients diagnosed with NAION, a rare condition that is the second-leading cause of optic nerve blindness. NAION is believed to be caused by reduced blood ...
Childhood blindness is an important contribution to the national prevalence of the disability of blindness. [3] Blindness in children can be defined as a visual acuity of <3/60 in the eye with better vision of a child under 16 years of age. [4]