When it comes to innovative surgical techniques, laser eye treatment for people with astigmatism has been reported to be very successful.
Anyone who suffers from astigmatism has the cornea of the eye shaped like an egg or rugby ball, instead of a normal sphere. This irregularity can also be found on the intraocular lens inside the eye.
With this oval shaped optical surface, rays of light entering the eye do not focus at a single point. From a distance, a point of light produces two focal lines at the back of the eye; lines which are both in line to each other as well as in distinct planes.
This causes sight to dim. Unlike short or long sightedness, there isn't a particular distance in which an object would look clear. Astigmatism makes any object at any distance seem to be blurred and out of focus.
This situation causes symptoms such as eyestrain, headaches, and lack of focus especially when reading and eyes are exhausted. To rectify astigmatism, contact lenses and spectacles can be worn. The severity of the astigmatism would specify whether spectacles should be worn constantly or only as needed.
Astigmatism can be corrected with laser eye treatments. Prior to laser eye treatment, an initial examination called corneal topography is done, 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 right astigmatism. Lasik involves forming a flap on the top bed of the cornea and vaporising the underlying layer with a well controlled laser. The flap is thoroughly placed back on to the eye without stitches.
Likewise, PRK employs the same method; however, a flap is not formed. The top layer of the eye is completely removed before the laser remodels the underlying cornea. Recovery is typically longer with PRK and the outcomes comparable in terms of the final visual results.
Laser eye surgery cannot, however, rectify 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 trauma that led to scarring. Some eye diseases also cause changes to the front of the eye, one of the most usual is called keratoconus.
"Regular astigmatism", the more widespread form of astigmatism is successfully corrected with laser eye treatments on a regular basis. As with all types of sight problems correctable with surgery, eye sight must be stable for at least 12 months before laser eye treatment is a viable consideration.
Anyone who suffers from astigmatism has the cornea of the eye shaped like an egg or rugby ball, instead of a normal sphere. This irregularity can also be found on the intraocular lens inside the eye.
With this oval shaped optical surface, rays of light entering the eye do not focus at a single point. From a distance, a point of light produces two focal lines at the back of the eye; lines which are both in line to each other as well as in distinct planes.
This causes sight to dim. Unlike short or long sightedness, there isn't a particular distance in which an object would look clear. Astigmatism makes any object at any distance seem to be blurred and out of focus.
This situation causes symptoms such as eyestrain, headaches, and lack of focus especially when reading and eyes are exhausted. To rectify astigmatism, contact lenses and spectacles can be worn. The severity of the astigmatism would specify whether spectacles should be worn constantly or only as needed.
Astigmatism can be corrected with laser eye treatments. Prior to laser eye treatment, an initial examination called corneal topography is done, 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 right astigmatism. Lasik involves forming a flap on the top bed of the cornea and vaporising the underlying layer with a well controlled laser. The flap is thoroughly placed back on to the eye without stitches.
Likewise, PRK employs the same method; however, a flap is not formed. The top layer of the eye is completely removed before the laser remodels the underlying cornea. Recovery is typically longer with PRK and the outcomes comparable in terms of the final visual results.
Laser eye surgery cannot, however, rectify 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 trauma that led to scarring. Some eye diseases also cause changes to the front of the eye, one of the most usual is called keratoconus.
"Regular astigmatism", the more widespread form of astigmatism is successfully corrected with laser eye treatments on a regular basis. As with all types of sight problems correctable with surgery, eye sight must be stable for at least 12 months before laser eye treatment is a viable consideration.
SHARE
