Laser Eye Treatment For Astigmatism
Laser eye treatment for those with astigmatism is very successful with advanced surgical techniques.
Anyone who suffers from astigmatism has the cornea of the eye shaped like an egg or rugby ball, instead of a regular sphere. Additionally, this abnormality is found on the intraocular lens placed within the eye.
Because of the oval shaped optical surface, light rays that penetrate the eye cannot concentrate on a single spot. From a length, a point of light produces two focal lines at the back of the eye; lines which are both perpendicular to each other as well as in distinct planes.
The end result is blurry sight. Compared to short or long sightedness, objects don't seem to be clearly in a specific distance. Astigmatism makes any object at any length look blurred and out of focus.
This condition causes symptoms such as eyestrain, headaches, and lack of concentration especially when reading and eyes are fatigued. spectacles and contact lenses can be worn to right astigmatism. The severeness of the astigmatism would influence whether glasses should be worn all the time or only as necessary.
Laser eye treatments are also one way of correcting astigmatism. Prior to laser eye treatment, an initial analysis called corneal topography is performed, which maps the contours and curvatures of the front of the eye. Doing so creates the geography of the front of the eye and the curvature changes needed with surgery are specifically considered.
Lasik and PRK are some of the usual laser eye treatment methods to correct astigmatism. With lasik, a flap is formed on the topmost layer of the cornea and a well-controlled laser vaporises the underlying layer. The formed flap is then placed back, very cautiously, on to the eye without the utilisation of stitches.
Likewise, PRK employs the same technique; however, a flap is not formed. With PRK, the eye's uppermost bed is completely removed before remodelling the underlying cornea, which is performed by the laser. With PRK, recovery is typically longer but the final visual results are one and the same.
Laser eye surgery cannot, however, right all types of astigmatism. A form of astigmatism known as "irregular astigmatism" in which the front of the eye is not a normal smooth surface cannot be surgically corrected. The condition of having irregular astigmatism is possibly caused by an eye injury that led to scarring. Some eye diseases also cause changes to the front of the eye, one of the most universal is called keratoconus.
"Regular astigmatism", the more usual form of astigmatism is successfully corrected with laser eye treatments on a regular basis. As with all types of vision problems correctable with surgery, eye sight must be stable for at least 12 months before laser eye treatment is a viable consideration.
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