Blindness
Loss of useful sight. Blindness can be temporary or permanent. Damage to any portion of the eye, the optic nerve, or the area of the brain responsible for vision can lead to blindness. There are numerous (actually, innumerable) causes of blindness. The current politically correct terms for blindness include visually handicapped and visually challenged.
Read Also:
- Blindness, night
Blindness, night: Impaired vision in dim light and in the dark, due to impaired function of specific vision cells (namely, the rods) in the retina. The ability of our eyes to quickly view objects as they shift from light to dark areas and the ability to see in dim light or at night is an […]
- Blindness, legal
Legal blindness.
- Blister
Blister: A collection of fluid underneath the top layer of skin (epidermis). There are many causes of blisters, including burns, friction forces, and diseases of the skin. Also known as bleb and bulla.
- Blister beetle
Blister beetle: A blister beetle is one of a number of beetles that have historically been used in dried or powdered form for medicinal purposes to raise blisters on the skin. An example of a blister beetle is the so-called Spanish fly. All blister beetles are soft-bodied beetles and belong to the family Meloidae.
- Blister, blood
Blister, blood: a blister full of blood due to a pinch, bruise or repeated friction. A blister is medically termed a vesicle. One that is more than 5 mm in diameter with thin walls and is full of watery fluid is called a bulla. The word “blister” entered English in the 14th century. It came […]