Curtain
Curtain (medical)
Curtain (pronounced: /ˈkɜːr.tən/) is a term used in the medical field to describe a visual phenomenon often associated with retinal detachment. This term is used to describe the sensation of a shadow or blindness that appears to close in from the peripheral vision, similar to a curtain being drawn.
Etymology
The term 'curtain' in this context is derived from the English word 'curtain', which refers to a piece of cloth hung up to act as a screen, typically movable sideways along a rail and found as a pair at a window. The medical usage of the term is metaphorical, describing the visual effect experienced by the patient.
Related Terms
- Retinal detachment: A serious eye condition that occurs when the retina pulls away from its normal position at the back of the eye. The sensation of a 'curtain' closing in from the peripheral vision is a common symptom.
- Floaters: Small specks or clouds moving in your field of vision as you look at a blank wall or a clear blue sky. Floaters are actually tiny clumps of gel or cells inside the vitreous, the clear jelly-like fluid that fills the inside of your eye.
- Flashes: The sensation of seeing flashing lights, often in the peripheral vision. This can be a symptom of retinal detachment.
- Vitreous detachment: A condition of the eye in which the vitreous membrane separates from the retina. It may precede a retinal detachment and cause similar symptoms, including the sensation of a 'curtain' in the vision.
External links
- Medical encyclopedia article on Curtain
- Wikipedia's article - Curtain
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