Ophthalmology

What are eye floaters?

Spots, flashes of light or darkness on any side of your vision could be a sign of eye floaters. Most often noticeable when looking at a plain, bright background, such as a blue sky or a white wall, eye floaters are a symptom ...

Genetics

Diabetes-causing gene can be regulated like a rheostat

Researchers at the Centre for Genomic Regulation (CRG) and Imperial College London have found a switch that regulates the activity of a gene that causes diabetes. The findings, published in Nature Cell Biology, highlight ...

Oncology & Cancer

Hallmark cancer gene regulates RNA 'dark matter'

A key genetic mutation that occurs early on in cancer alters RNA "dark matter" and causes the release of previously unknown RNA biomarkers for cancer early detection, a new study by UC Santa Cruz researchers published in ...

Health

Abortion ban: one more obstacle faced by US servicewomen

Abortion bans enacted across America will be especially painful for women in the US military, one more hurdle they have to face in a man's world where sexual assault and unwanted pregnancies occur more often than in the rest ...

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Darkness

Darkness, in contrast with brightness, is a relative absence of visible light. It is the appearance of black in a color space. When light is not present, rod and cone cells within the eye are not stimulated. This lack of stimulation means photoreceptor cells are unable to distinguish color frequency and wavelength. The resulting perception is achromatic and in the case of darkness, black. The emotional reaction to darkness has metaphorical importance in many cultures.

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