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because the vitreous of the eye tends to pull away from the back of the eye as we get older. sometimes it pulls too hard and pulls the retina. fluid can get behind the tears in the retina causing it to pull away such as wallpaper pulls off the wall when it gets wet.

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What is the procedure to repair a detached retina?

The vitreous is a gel-like fluid which fills most of the eye. As people age, this vitreous becomes more and more liquefied. The vitreous has loose attachments to the retina, and more firm attachments to the optic nerve. At some point in a person's life, the vitreous liquefies enough to shift position in the eye. When this occurs, usually between age 50 and 70, the back edge of the vitreous will pull forward away from the retina, leading to a "vitreous detachment". This is generally a normal process, although it may happen abnormally early in cases of high nearsightedness or trauma. As the vitreous detaches, it tugs on the retina. This is perceived as a flash of light, similar to a lightning flash in the corner of the vision. It may occur especially with eye movement, since the vitreous moves in the eye. Debris pulled off of the optic nerve and retina are then seen as floaters, suspended in the vitreous above the retina. Sometimes this is described as a cobweb, a net, a string, or a fly over the vision.


Is palm more sensitive than hand back?

The skin on the palm has more nerve endings than the back in order to protect the body from pain. When you feel something hot or painful you feel it quickly and pull it away from that discomfort.


When a living plant cell loses water through of osmosis there is contraction of the contents of the cell away from the cell wall what is this phenomenon called?

The phenomenon you are describing is called plasmolysis. This occurs when water leaves the cell, causing the contents to shrink and pull away from the cell wall.


What does protraction mean in anatomy terms?

Scapular protraction is moving the scapula (shoulder blade) forward. The opposite is scapular retraction. To "feel" the definition, first try retraction -- pull your shoulders back to squeeze your shoulder blades together as if you're trying to hold a pencil between them. Now do the opposite -- that opposite movement is scapular protraction.


How do you stop curving your back?

To stop curving your back, you can try practicing good posture by keeping your shoulders back and down, engaging your core muscles, and sitting or standing up straight. Stretching and strengthening exercises targeting your back muscles can also help improve your posture over time. Consulting with a physical therapist or a posture specialist for personalized guidance may be beneficial.

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