Why does nothing happen to our eyes while our skin is affected by extreme cold?

In extremely cold weather, our skin dries and even fries, not much happens to our eyes. Have you ever thought about the reason for this?
Since I live in Kars right now, I am exposed to extreme weather conditions. especially in winter, you wouldn't believe it but we see -35 degrees most of the time. Why does our eyes not freeze especially when our skin is exposed to such colds (see cold bite)?
1.The position of my eyes: when we look at the following mr image, our eyes are embedded in the skull in a bone cavity called the orbit, rich in blood vessels, close to the brain and surrounded by the muscles around the eyes. these three elements provide insulation.
2. retinal layer: inside the anatomical structure of the eye, there is a rich layer of vein. Being rich in the vein means being exposed to large amounts of blood flow, which prevents heat loss.
3. intraocular vitreous fluid: this area does not contain blood vessels. Considering its structure, it contains 98% water, but although it contains so much water, it contains a network of collagen fibrils consisting of vitreous salts, sugars, vitrosine (a type of collagen), glycosaminoglycan, hyaluronan, opticin and a wide variety of proteins. this allows the intraocular fluid to have two to four times more viscosity than water, i.e. it is a kind of gel consistency (think like an egg white. eg egg white freezes at -55 degrees) and pulls the freezing point down.

4.Eyelid and Tear: While the eyelid is closed, it provides mechanical protection, while the tear contains many electrolytes. therefore it is more salty than normal body fluids and creates an antifreeze effect. while this keeps the eye moist, it also prevents the eye from freezing.


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