Eye Anatomy

Parts of The Eye

I thought there was something structurally wrong with my eye anatomy or some parts of the eye - like the shape of the cornea or/and the length of the eyeball - when I couldn't see clear at a distance because of my myopia.

Ophthalmology also said the same.

Then my myopia disappeared like magic but the anatomy remained the same.

Obviously!

What was it that changed then?

Physiology?

What else could it be?

I must know something about the eye anatomy first, and all the parts of the eye; I thought!

Eyes are the windows into mind through body. They have their role to play as the connection between the two.

Let's check each and every part of the eye:

• Orbit : The eye sits in the orbit of skull bones cushioned by the pads of fats. Lacrimal gland sits there too, producing tears to lubricate and moisten the eye, flush foreign material away and then themselves drain through nasolacrimal duct located at the inner corner of the eye.

• Eyelids and Eyelashes : Eyelids cover the eyes for safety as well as for spreading the tears over the whole surface. Eyelashes act as filter against dust and dirt.

• Conjunctiva : is a thin layer that covers the front of the eye and the inside of the eyelid.

• Sclera : the white part of the eye surrounds the eyeball and attaches to the extraocular muscles.

• Cornea : is a clear layer at the front-center of the eye that focuses light before lens does so.

• Anterior Chamber Angle and Trabecular Meshwork : sit where cornea meets iris and drain aqueous humor out.

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  Eye Anatomy: A clear fluid flows continuously in and out of the anterior chamber and nourishes nearby tissues. The fluid leaves the chamber at the open angle where the cornea and iris meet. When the fluid reaches the angle, it flows through a spongy meshwork and leaves the eye:
  
  Credit: National Eye Institute, National Institutes of Health

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• Iris and Pupil : Iris, the colored part of the eye is a ring shaped tissue with a central opening called pupil. Iris has a ring of muscles, which contracts to constrict the pupil and stretches to dilate it in order to control the amount of light entering into the eye.

• Lens : is a transparent, flexible structure located behind the iris and the pupil surrounded by the ciliary body - a ring of muscular tissue that fattens the lens on contraction.

• Vitreous Cavity : the space between the lens and the retina, filled with vitreous humor, keeps the eyeball round in shape.

• Retina : made up of rods (sensitive to brightness) and cones (sensitive to hue), the retina converts the focused image of light onto it, into the nerve signals and transmits them to the brain through the optic nerve.

• Macula : the central part of the retina, made up mainly of cones, gives sharp central vision.

• Choroid : separates the retina and the sclera, and nourishes the retina.

• Optic Nerve : a bundle of over 1 million nerve fibers transmits nerve signals from the eye to the brain.

• Extraocular Muscles : Six of them, help move the eye up, down, left, right and diagonally.

That is what eye anatomy is all about. All the parts of the eye clearly listed and explained in brief!

And the eye anatomy doesn't change! The parts of the eye remain as they ever were!

What changed then, when my myopia vanished into thin air within a single moment?

Today, LASIK eye surgery is correcting vision by sculpting cornea with the help of a laser and thus distorting the natural eye anatomy for life, although not a single structure of all the parts of the eye has any role at all to play in spoiling the vision in the first place!

Vision therapy does the needful without even touching the eye anatomy or any of the parts of the eye in order to affect a change in the vision. Rather it is simply done through changing the physiology of the eye which, by going faulty, turns the real culprit as far as the errors of refraction, namely myopia, hyperopia, presbyopia, and astigmatism are concerned.

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