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Major symptoms are sudden loss of vision (partial or complete), sudden blurred or "foggy" vision, and; pain on movement of the affected eye. [4] [5] [2]Many patients with optic neuritis may lose some of their color vision in the affected eye (especially red), with colors appearing subtly washed out compared to the other eye.
Infective conjunctivitis is most commonly caused by a virus. [3] Bacterial infections, allergies, other irritants, and dryness are also common causes. Both bacterial and viral infections are contagious, passing from person to person or spread through contaminated objects or water. Contact with contaminated fingers is a common cause of ...
Scientist using an optical microscope in a laboratory. The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects.
The detection of optical scattering and the gradient forces on micron sized particles was first reported in 1970 by Arthur Ashkin, a scientist working at Bell Labs. [1] ...
Subacute myelo-optic neuropathy (SMON) is an iatrogenic disease of the nervous system [1] leading to a disabling paralysis, blindness and even death. [2] Its defining manifestation was as an epidemic in Japan during the 1960s: the Japanese government estimated 11,000 were affected; however, the College of Medicine at the University of Tokyo put the number at 30,000, citing a lack of ...
The virus withstands temperatures below 63-degree Celsius for 10 minutes. The tungro virus is known to have at least two strains - S and M. The 'S' strain in these varieties produces conspicuous interveinal chlorosis, giving an appearance of yellow stripe and sometimes irregular chlorotic specks on younger leaves.
On August 10, 1988, 11-year-old Dade "Zero Cool" Murphy is barred from owning or operating computers and touch-tone telephones, until his 18th birthday, after his family is fined US$45,000 (equivalent to $120,000 in 2024) for his crashing of 1,507 computer systems, causing a seven-point drop in the New York Stock Exchange.