Cataracts, the most prevalent cause of blindness in humans, could one day be treated without surgery, eye drops tested on dogs suggests. A clouding of the lens in the eye leading to a decrease in vision, cataracts are most commonly due to aging, but may also occur due to trauma, radiation exposure, be present from […]
Sometimes a person may have an eye that doesnÃ¢â‚¬â„¢t follow the other eye. This means vision is out of alignment and corrections need to be made to the extraocular muscles. These muscles are what move the eyeball in all directions. Eye muscle surgery is performed to strengthen, weaken, or reposition those tiny muscles to allow the eyeball to move with the other one.
How the Muscles Work
The extraocular muscles are attached to sclera, which is the outer protective layer covering the eyeball. They are found in different places and the other ends are attached to the eye socket in the skull. This is what allows the eyeballs to move up, down, and to both sides and any angle between. This allows the eyeball to Ã¢â‚¬Å“trackÃ¢â‚¬Â together.
Nearly 2/3 of the eye is made of a clear gel-like substance that fills the center of the eye. When problems arise and affect the back of the eye a vitrectomy, a removal of the vitreous. After this is done the vitreous builds back up as the eye secretes aqueous and nutritive fluids.
This procedure may also be done to clear blood and other debris from the eye. It can be used to remove scar tissue. Anything that has collected in the vitreous can obscure light as it passes through the eye on its way to the retina and result in blurred vision.
What Conditions Can It Correct?
Some other common conditions that may need a vitrectomy are:
- Ã¢â‚¬Â¢ Problems related to an earlier surgery
Ã¢â‚¬Â¢ Injury or infection
Ã¢â‚¬Â¢ Pre-retinal membrane fibrosis
Ã¢â‚¬Â¢ Hemorrhaging in the eye
Ã¢â‚¬Â¢ Retinal detachment
Ã¢â‚¬Â¢ Macular hole
Ã¢â‚¬Â¢ Complications from diabetic retinopathy
Eye muscle surgery, officially called strabismus surgery, is used to correct misaligned eyes and is done by the use of surgical techniques on the extra ocular muscles.
There are seven muscles in total within the eye these are the
- Ã¢â‚¬Â¢ Levator palpebrae superioris
Ã¢â‚¬Â¢ Superior rectus
Ã¢â‚¬Â¢ Inferior rectus
Ã¢â‚¬Â¢ Lateral rectus
Ã¢â‚¬Â¢ Medial rectus
Ã¢â‚¬Â¢ Superior oblique
Ã¢â‚¬Â¢ Inferior oblique
Definition of misaligned eyes
When we look at an object our eyes are both aimed at one object creating two images the same that are sent to the brain where it fuses the images together and creates a three dimensional image.
If one eye is out of line with the other then the images sent to the brain differ greatly, when this occurs the brain will, in a lot of cases, dismiss one of the images and only use one of the images sent for visual purposes.
When this occurs in young children it can have dire consequences as the childÃ¢â‚¬â„¢s brain only takes one image causing development of vision to become limited as the image sent may miss a lot of images of visual importance and the eye sending images that are unused may not develop much further at all.
Astigmatic keratotomy surgery is safe and effective but has been replaced with the more modern LASIK surgery. Astigmatism is a problem with many eye patients. An eye that has astigmatism is shaped like a football.
Surgery is needed to reduce the steepness of the cornea and make it more rounded. This is often done while other forms of corrective surgery are done. Astigmatisms are hard to treat unless they are mild.
Astigmatic keratotomy surgery involves one or two incisions allowing the cornea to relax into a more natural state. This allows the cornea to round out and decrease the steepness to allow for better vision. Severe forms of astigmatism may be treated with astigmatic keratotomy but may still need glasses or contact lenses for ideal vision.