STENOPEIC DISC Meaning and
Definition
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A stenopeic disc refers to a small, round aperture that is used to improve vision by reducing the amount of light entering the eye. This disc, made of an opaque material, is designed to have a minute hole at its center. The purpose of the stenopeic disc is to create a pinhole effect, limiting the number of light rays that reach the retina and thus improving visual acuity.
When a person looks through the stenopeic disc, the small opening acts as a natural lens, focusing light onto the retina without the need for the eye's own lens. By decreasing the size of the aperture, the number of peripheral rays entering the eye is restricted, reducing the effects of refractive errors, such as astigmatism, myopia, or hyperopia. The pinhole effect created by the stenopeic disc helps to sharpen the focus of objects, thereby enhancing overall visual clarity.
Stenopeic discs are commonly used as a diagnostic tool by optometrists and ophthalmologists to determine the presence and magnitude of refractive errors in patients. Additionally, stenopeic discs can serve as a temporary solution for individuals who require vision correction but do not have access to glasses or contact lenses.
Overall, the stenopeic disc acts as a low-tech optical aid to improve both near and distance vision, offering an alternative method for individuals to temporarily compensate for refractive errors and achieve clearer visual perception.
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A metallic or other opaque disc with a narrow slit through which one looks, used as a test for astigmatism.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for STENOPEIC DISC
Etymology of STENOPEIC DISC
The word "stenopeic" is derived from the Greek word "stenos", meaning "narrow" or "tight", and the Greek word "opeia", meaning "sight" or "view". In optics, a stenopeic disc refers to a device that contains a small, narrow aperture (also called a pinhole), which restricts the amount of light entering the eye. The term "disc" is used to describe its flat circular shape. The stenopeic disc is used to improve focusing and reduce the impact of certain visual impairments.
