What is Astigmatism?
Astigmatism means that the eyeball isn’t entirely round. Most of us have astigmatism to a certain extent. Light enters a normal eye ball and bends uniformly, giving a clear view. However if the shape of your eye is curved, light bends more towards one direction. This results in only parts of anything being in focus. Distant objects might appear wavy or blurry. It is quite easy for an ophthalmologist to fix astigmatism using surgery, glasses or contacts. It is not abnormal for people to have it and in most instances, people have it since birth. The exact reason isn’t known. Surgeries, eye diseases and eye injury may also cause it. Sitting too close to the TV or reading in poor light conditions don’t cause it. A proper eye exam may be needed if you have blurred vision as it may also mean that you are farsighted or nearsighted. As the symptoms of astigmatism gradually appear, a visit to the eye doctor is essential if vision changes are apparent. Contacts or glasses can correct most cases of astigmatism. If the extent of astigmatism is very less, then corrective measures may not be needed. The cornea is the frontal portion of the eye and gets affected in irregular astigmatism, which is quite uncommon. Keratoconus is one such type where the usually round cornea turns cone shaped.
Two treatments are available for the common types of astigmatism:
People may have weak eyes due to a variety of reasons. Astigmatism happens to be one of those reasons. When one is affected by astigmatism, it results in blurry vision. The eye has a part called the cornea, which is the outermost layer of the eye and is responsible for allowing light to enter. When the cornea is not shaped as it should be, it leads to astigmatism.
However, this is not the only condition under which it can occur. In fact, there are two different types of astigmatism. One is corneal astigmatism which is the result of an odd-shaped cornea. The other is lenticular astigmatism, which occurs when the lens has an incorrect shape. More often than not, people are born with astigmatism. However, there are chances of developing this eye disorder after an eye injury or after an eye disease.
How to diagnose?
There are a few ways in which astigmatism can be diagnosed.
The easiest way to go about treating astigmatism is by using corrective lenses. This is usually the method of treatment for people whose astigmatism is not that bad. The lenses could either be a part of spectacles or used as contact lenses. The good part about contact lenses is that the field of view is wider.
Orthokeratology (Ortho-k) works to improve astigmatism by using lenses as well. However, the lenses are of the hard variety. These lenses are useful for corneal astigmatism patients as they reshape the eye. Usually, they are worn while sleeping and most people can have normal vision the next day. However, if one stops using them, the eye goes back to its original state. So, they are not a permanent solution.
Surgery, however, can be a permanent solution to astigmatism. LASIK and PRK are two of the most popular types. RK is also popular, but to a lesser extent. It is good to remember that the risks of surgery should be discussed with a doctor prior to undergoing one. In case you have a concern or query you can always consult an expert & get answers to your questions!
LASIK or Laser-Assisted in-situ Keratomileusis is a kind of eye surgery used for correcting certain vision problems as well as reducing or doing away with the need for corrective lenses or eyeglasses. It is a widely used refractive surgery that alters the shape of your cornea, the transparent tissue on the frontal portion of the eye. The fundamental aim of this surgery is to refract (bend) light rays in order to make them focus on the retina with improved precision, thus creating a sharper and clearer vision.
You can go for a LASIK eye surgery if you are experiencing any of these problems:
Learn About The Different Tyoes Of Lasik-
While spectacles are a fashion statement for some people, for others they are an uncomfortable necessity. Though contact lenses may be a little more aesthetically pleasing they too can be quite uncomfortable and cannot be worn throughout the day. Thankfully, there is a third way to correct vision. Laser surgery or LASIK, it is a popular refractive procedure that can correct common vision problems, such as nearsightedness, farsightedness and astigmatism. This procedure aims at reshaping the cornea so that light entering the eyes can be focused onto the retina for the person to have a clearer vision.
Laser surgery is pain-free and quick in most cases. Usually, it does not take more than 15 minutes to correct vision in both eyes. The results of this surgery can be seen in as little as 24 hours.
The first step of laser surgery to correct vision is to create a thin, circular flap in the cornea. This is then folded back to access the stroma or underlying cornea. An excimer laser is then used to remove some of the corneal tissue. For people suffering from nearsightedness, the cornea is flattened while for people suffering from farsightedness, the cornea is made steeper. In cases of astigmatism, an irregular cornea is smoothened. Once the correct gradient has been achieved the corneal flap is put back into place and the cornea is allowed to heal naturally. There are no stitches or bandages required in a laser eye surgery. You may feel a temporary burning or itching sensation in your eyes immediately after the procedure. It is important not to rub your eyes or place any pressure on them. Your vision may also be cloudy or blurred for the first few hours. A doctor will usually advise you to rest for a few days after the surgery so that your cornea can heal properly. In a few days, your eyesight should stabilize, though, in a few rare cases, it may take a little longer. You should also avoid any form of strenuous exercising for a few days after the surgery.
Though LASIK surgery has a very high success rate, there are very rare occasions where spectacles may still be needed even after the surgery. Thus LASIK is a choice of treatment for many who seek freedom from glasses. If you wish to discuss about any specific problem, you can consult an ophthalmologist.
One of the most cutting edge eye procedures which has been very successful in practice and has been loved by millions of patients is LASIK. LASIK is a form of eye surgery performed with the help of a precise laser and is very effective in correcting nearsightedness, farsightedness as well as astigmatism (imperfections with the shape of the cornea). With any such procedure, there are bound to be myths which arise out of misconceptions. Some of those myths as well as the advantages of LASIK have ben enumerated below:
Myth # 1 – Lasik can only be performed up to a certain age
Many people think that LASIK cannot be performed on people of advanced age. This is a misconception as LASIK has been performed on people above 90 as well. There are some considerations however, such as the health of the person and the condition of the eyes. If there are no medical objections, then LASIK can be performed regardless of the age of the person. Doctors also tend to wait till young adulthood (around 18-20 years of age) before performing LASIK. However, LASIK procedures have been performed on young children with severe vision problems as well.
Myth # 2 – The technology behind LASIK is too new and thus not yet perfected
This is yet another commonly propagated myth about LASIK. The technology for this procedure has been around for quite some time and has ben performed with increasing regularity since the 1980s. There have been multiple long term studies done on people who underwent LASIK surgery and almost all of them have had favorable results both in the short term as well as the long term. It is a properly established field and means of treatment within ophthalmology and is subject to the same stringent standards testing as other treatments within the field of medicine.
Myth # 3 – LASIK can cause many complications such as dry eyes and night glares
Any surgical procedure has a certain chance of complications occurring. However, LASIK tends to have very low occurrences of complications. What many people tend to confuse complications with is the normal healing procedure. Dry eyes and night glares usually occur after the first few weeks of the procedure and is part of the healing process of the body. It usually tends to go way with the first few months itself.
Myth # 4 – Contact lenses are better than LASIK
While contact lenses do serve a purpose in correcting vision, they can often contribute to eye infections as well as irritations and headaches. Also contact lenses need to be changed every few weeks or so. LASIK surgery eliminates all of these hassles and you can have perfectly clear vision without having to worry about all the problems that contact lenses bring with them.
Myth # 5 – The LASIK procedure is painful
No other myth is farther from the truth. In this procedure, the surgeon creates a thin flap like structure out of the tissue within the cornea with the help of a laser. This layer is then used to reshape the cornea and thus correct vision problems. Antiseptic and numbing eye drops are used when performing this surgery which results in minimal discomfort that only stays during the initial stages. If you wish to discuss about any specific problem, you can consult an ophthalmologist and ask a free question.
Eye surgeries have evolved a long way. Starting from the most basic of eye surgeries, technological advancement has evolved a number of modern eye surgery techniques. LASIK is the latest trend in eye surgery and is the most common type of eye surgery in the modern day.
LASIK or Lasik (laser assisted situ keratomileusis), is a laser eye surgery or laser vision revision. It is a kind of refractive surgery for the rectification of nearsightedness, hyperopia, and astigmatism. The LASIK surgery is performed by an ophthalmologist who utilizes a laser or microkeratome to reshape the eye's cornea with a specific end goal to enhance visual acuity. For most patients, LASIK gives a lasting contrasting option to eyeglasses or contact lenses.
Carrying out a LASIK surgery:
Results of LASIK surgery:
Side-effects: While this surgery strategy provides effective results, LASIK complications can happen and may incorporate diseases such as night glare, and you may experience starbursts or radiances, especially while driving.
LASIK surgery is one of the most carried eye surgeries nowadays and gives satisfactory results. If you wish to discuss about any specific problem, you can consult a ophthalmologist and ask a free question.
What is Astigmatism?
Two treatments are available for the common types of astigmatism: