Cylinder
Cylinder (medical)
Cylinder (pronounced: /ˈsɪlɪndər/) is a term used in various medical contexts, often referring to the shape of certain structures or objects. The term originates from the Greek word 'kulindros', which means 'roller' or 'tumbler'.
In Optometry
In optometry, a cylinder refers to the amount of lens power for astigmatism. The power of a cylindrical lens can correct the difference in the focusing power of the eye from one meridian to another. This is often written in a prescription for eyeglasses or contact lenses.
In Anatomy
In anatomy, the term cylinder can refer to the cylindrical shape of various body structures. For example, the spinal cord is often described as a cylinder due to its long, tubular shape.
In Medical Equipment
In the context of medical equipment, a cylinder often refers to a cylindrical container or storage unit. For example, oxygen cylinders are used to store and transport oxygen for medical use.
Related Terms
- Astigmatism: A common vision condition that causes blurred vision due to the irregular shape of the cornea or the lens inside the eye.
- Lens: A piece of glass or other transparent substance with curved sides for concentrating or disseminating light rays.
- Spinal Cord: The major column of nerve tissue that is connected to the brain and lies within the vertebral canal and from which the spinal nerves emerge.
- Oxygen Cylinder: A storage vessel for oxygen, which is either held under pressure in gas cylinders or as liquid oxygen in a cryogenic storage tank.
External links
- Medical encyclopedia article on Cylinder
- Wikipedia's article - Cylinder
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