Reference Terms
from Wikipedia, the free encyclopedia
Visual acuity
Visual acuity (VA) is acuteness or clearness of vision, especially form vision, which is dependent on the sharpness of the retinal focus within the eye, the sensitivity of the nervous elements, and the interpretative faculty of the brain.
Note: The above text is excerpted from the Wikipedia article "Visual acuity", which has been released under the GNU Free Documentation License.
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November 21, 2024
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Nov. 18, 2024 — An international team of researchers has achieved an unprecedented milestone: the creation of mouse stem cells capable of generating a fully developed mouse using genetic tools from a unicellular organism, with which we share a common ancestor that ...
Nov. 8, 2024 — Scientists believe individuals of the most recently discovered 'hominin' group (the Denisovans) that interbred with modern day humans passed on some of their genes via multiple, distinct ...
Nov. 7, 2024 — It's common knowledge that our brains -- and, specifically, our brain cells -- store memories. But a team of scientists has discovered that cells from other parts of the body also perform a memory function, opening new pathways for understanding how ...
Latest Headlines
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Nov. 21, 2024 — Researchers have analyzed the entire mouse intestine, mapping gene expression and cell states and location in the healthy gut and in response to ...
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Nov. 21, 2024 — After severe heart failure, the ability of the heart to heal by forming new cells is very low. However, after receiving treatment with a supportive heart pump, the capacity of a damaged heart to ...
Nov. 21, 2024 — Scientists have long been trying to tease apart hepatitis A virus, to understand its inner workings and how it functions in the human body. Infectious disease researchers have discovered that a ...
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Nov. 21, 2024 — Researchers have uncovered how different types of brain cells work together to form large-scale functional networks in the human brain -- interconnected systems that support everything from sensory ...
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