Adaptation (eye)
Adaptation (eye)
Adaptation in the context of the eye, refers to the ability of the eye to adjust to various levels of light and dark. Pronounced as /ædæpˈteɪʃən/.
Etymology
The term 'adaptation' originates from the Latin word 'adaptare', which means 'to fit'.
Light Adaptation
Light Adaptation is the process by which the eye increases its sensitivity in bright light conditions. This process involves the cone cells in the retina, which are responsible for color vision and function best in relatively bright light conditions.
Dark Adaptation
Dark Adaptation is the process by which the eye increases its sensitivity in low light conditions. This process involves the rod cells in the retina, which are responsible for vision in low light conditions.
Related Terms
- Photoreceptor cell: A type of neuron in the retina that converts light into signals that can stimulate biological processes.
- Retina: The light-sensitive layer of tissue at the back of the inner eye.
- Visual perception: The ability to interpret the surrounding environment by processing information that is contained in visible light.
- Visual acuity: Clarity of vision, the ability of the eye to see fine details.
- Visual field: The total area in which objects can be seen in the side (peripheral) vision while the eye is focused on a central point.
External links
- Medical encyclopedia article on Adaptation (eye)
- Wikipedia's article - Adaptation (eye)
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