The structure of the eye
Helpful Hints / / August 12, 2017
Men and women look at things differently.Different people see the world different nationalities.And this despite the fact that the structure of the eyes of all people equally.Nature has allowed himself to experiment with only the outer design and color schemes.
eye 15 times smaller than the eye of a giant squid: 2.5 cm in diameter 37.5 cm against the mollusk.
Eyelashes protect the eyes from dust and provide a tight closure during blinking eyelids.Each eye pubescent 160 cilia.
iris we determine eye color.If there's little melanin pigment, the eyes light - gray, blue.Most of the pigment in the iris brown-eyed and black-eyed.The iris of each person is unique, its structure is excellent, even in identical twins.Some experts say that very soon a passport, pass, driving license and credit card to replace quickly and accurately identifies a person iris scans.Others - iridodiagnosty (from the Latin name of the iris to iris) - already recognized by the state of her health.Natural and healthy t
This is the front part of the outer membrane of the eye - a thin and completely transparent, well transmits light, 60% focuses the image, and the remaining part of the work takes on the lens.Corneal sensitivity is dependent on eye color.In blue-eyed it twice more susceptible to any influences than the brown-eyed.
If nature has endowed us stingy and only one eye, then we would see the world flat.And if a couple of our "optical devices" moved out of sync, then we always have double vision before his eyes.
circular hole in the center of the iris, through the rays of light penetrate the eye.pupil size depends on the brightness of the light and ... age: 70 years to its diameter decreases almost 1/3.
Connective tissue lining the eyelids inside and turning on the eyeball.Its inflammation - conjunctivitis - an unpleasant disease, but not dangerous.Symptoms: redness, itching, burning, tearing, sometimes secretions that collect in the corners of his eyes.Causes: infection, allergy (such as nail polish - just rub the eye manicured finger to display irritation, or chlorinated pool water - the so-called basin conjunctivitis).Treatment appoint ophthalmologist depending on the cause of the disease, but the lotion with tea brewing, tincture of calendula, chamomile, even a simple cold water will ease your condition.
This is the normal length of the eye.When myopia eyeball, not suppressed weak thin sclera is stretched.Rays of light are not going as expected, on the retina, and are focused in front of her.The image of distant objects get fuzzy, blurred.Every millimeter of the added growth is 3 diopters of myopia on.That such optical tricks.
In another protein - the outer shell, serves as a case for the eyes.Some people (Japanese, Indonesian) the nature of the sclera is thin, prone to stretching.Therefore, they are more susceptible to short-sightedness, or myopia, than, for example, Russian or Scandinavian.In Japan, where even the eyes of the characters will break, short-sighted, more than 70% of the population in Russia - about 15%.
He often appears in the winter on the edge of the century at the root of the lashes.To get rid of him, burned barley vodka, bury sulfacetamide drops with chloramphenicol eye or use an antibiotic ointment.Remember to apply to the affected area dry heat - boiled egg, it can be used only if the barley is just beginning and there is no suppuration!
most common bruise, just a little.It can occur if the lift a heavy bag, recycle the computer: the physical or duty eyestrain vessel bursts.To redness soon passed, apply for 10-15 minutes a compress of sleeping tea leaves.It should look good - special drip vasoconstrictive drops.Red fishnet vessels constantly covered his eyes?Perhaps it violated intraocular pressure.Consult an ophthalmologist.By the way, those who make long breaks in foods or suffer from constipation, increased intraocular pressure, certainly.
One discerns 10 million colors.Europeans are very sensitive to red and longer distinguish its tones, for example, than the inhabitants of America.In all its multicolored glory they see the world around women.And one in ten men in varying degrees, suffer from color blindness.Smokers color sensitivity decreases, and shades of blue, and they can not recognize.
lens is shaped like a lens, it is not made of crystal and crystal of transparent elastic fibers, which by means of ciliary (ciliary) muscles change shape.Due to which the lens becomes more convex or less, stronger or weaker refracts rays of light, and therefore allows to clearly see objects located far away and, and literally under the nose.