Astigmatism is a common vision condition caused by an irregular shape of the cornea or lens inside the eye. It results in blurred or distorted vision at all distances, near and far. In a normal eye, the cornea and lens are spherical, allowing light to focus clearly on the retina. However, in an eye with...
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What Part of the Brain Controls Emotions?
SUBSCRIBE What Part of the Brain Controls Emotions? Medically reviewed by Sachin S. Kapur, M.D., M.S. — Written by Jill Seladi-Schulman, Ph.D. — Updated on July 23, 2018 The limbic system Fear Anger Happiness Love Bottom line Overview The brain is a very complex organ. It controls and coordinates everything from the movement of your fingers to your heart rate. The brain also...
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What is a chalazion? Identification and treatment
A chalazion is a small, slow-growing lump or cyst that develops within the eyelid. They are not usually painful and rarely last longer than a few weeks. A chalazion can develop when a meibomian gland at the edge of an eyelid becomes blocked or inflamed. These glands produce oil that lubricates the surface of the...
