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We usually rub our eyes due to lack of sleep or to remove dust, irritants, etc. Sometimes rubbing our eyes for brief periods can be good because it activates the release of tears which lubricate our eyes. Rubbing even stimulates the vagus nerve which in turn slows down our heartbeat, helping relieve stress.

However, don’t make it a habit. Firstly, continuous rubbing can cause the outer layer of our eyes called cornea to get thin, weak and conical in shape, causing a disease known as keratoconus, thus leading to distorted vision. Secondly, if there is an irritant and we try to remove it by rubbing, that irritant can end up scratching our cornea. Lastly, if people with glaucoma rub their eyes, it can lead to extra increase in fluid pressure, further damaging the optic nerve, eventually leading to blindness.

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