September
08
How the Eye Works
The eye is a small, but very complex organ. Sight is created when our eyes interact with light and then transfer that information to the brain.
If you are nearsighted , you must wear a pair eyeglasses incluing rimless glasses , some times flexible glasses or still other times titanium glasses as well.
The main parts of the eye include:
Cornea: transparent tissue covering the front of the eye that lets light travel through
Iris: a ring of muscles in the colored part of the eye that controls the size of the pupilPupil: an opening in the center of the iris that changes size to control how much light is entering the eye.
Sclera: the white part of the eye that is composed of fibrous tissue that protects the inner workings of the eye
Lens: located directly behind the pupil, it focuses light rays onto the retina
Retina: changes light that enters the eye into nerve signals
Rods and cones: special cells used by the retina to process light
Fovea: a tiny spot in the center of the retina that contains only cone cells. It allows us to see things sharply.
Optic Nerve: a bundle of nerve fibers that carries messages from the eyes to the brain
Macula: a small and highly sensitive part of the retina responsible for central vision, which allows a person to see shapes, colors, and details clearly and sharply.
How We See
Light hits an object and reflects off of it. The light then passes through the cornea. The iris regulates the amount of light that enters the eye through the pupil. The lens then focuses the light on the retina. Because of its curved structure, the lens flips the image before projecting it onto the retina. Next, the rods and cones become excited and the optic nerve carries the message to the brain.
Depending on the shape of the eyeball, the cornea, lens, and retina may not work perfectly together, causing fuzzy vision. That is why many people need vision correction. Eyeglasses and contact lenses help the light focus images correctly on the retina and allow people to see clearly.
Medication or Procedure-Related Eye Sensitivities
Almost everyone experiences eye problems from time to time.You need reading glasses when reading.Your eyes might sometimes look or feel strained, dry, bloodshot, or itchy. They could also be particularly sensitive to light due to certain medications you are taking or medical conditions you have. Also, if you have recently gone through procedures such as surgery to remove cataracts, your eyes will need extra protection. And optical frames with glasses also being choces for you.
Consult your eyecare professional for any problems that last more than a day or two or to determine the best way to protect your eyes from excess light and from UV radiation
The eye is a small, but very complex organ. Sight is created when our eyes interact with light and then transfer that information to the brain.
If you are nearsighted , you must wear a pair eyeglasses incluing rimless glasses , some times flexible glasses or still other times titanium glasses as well.
The main parts of the eye include:
Cornea: transparent tissue covering the front of the eye that lets light travel through
Iris: a ring of muscles in the colored part of the eye that controls the size of the pupilPupil: an opening in the center of the iris that changes size to control how much light is entering the eye.
Sclera: the white part of the eye that is composed of fibrous tissue that protects the inner workings of the eye
Lens: located directly behind the pupil, it focuses light rays onto the retina
Retina: changes light that enters the eye into nerve signals
Rods and cones: special cells used by the retina to process light
Fovea: a tiny spot in the center of the retina that contains only cone cells. It allows us to see things sharply.
Optic Nerve: a bundle of nerve fibers that carries messages from the eyes to the brain
Macula: a small and highly sensitive part of the retina responsible for central vision, which allows a person to see shapes, colors, and details clearly and sharply.
How We See
Light hits an object and reflects off of it. The light then passes through the cornea. The iris regulates the amount of light that enters the eye through the pupil. The lens then focuses the light on the retina. Because of its curved structure, the lens flips the image before projecting it onto the retina. Next, the rods and cones become excited and the optic nerve carries the message to the brain.
Depending on the shape of the eyeball, the cornea, lens, and retina may not work perfectly together, causing fuzzy vision. That is why many people need vision correction. Eyeglasses and contact lenses help the light focus images correctly on the retina and allow people to see clearly.
Medication or Procedure-Related Eye Sensitivities
Almost everyone experiences eye problems from time to time.You need reading glasses when reading.Your eyes might sometimes look or feel strained, dry, bloodshot, or itchy. They could also be particularly sensitive to light due to certain medications you are taking or medical conditions you have. Also, if you have recently gone through procedures such as surgery to remove cataracts, your eyes will need extra protection. And optical frames with glasses also being choces for you.
Consult your eyecare professional for any problems that last more than a day or two or to determine the best way to protect your eyes from excess light and from UV radiation