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Overview

Astigmatism - Symptom, Treatment And Causes

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:

  • Corrective Lenses –These are contacts or glasses. If astigmatism affects you, then the doctor would prescribe a type of soft, special contact lenses (also called toric). They can bend light, to a greater degree in one direction. If the degree of astigmatism is severe, then a rigid gas-permeable lenses may be needed. The ophthalmologist will be best able to choose the right one for you.
  • Refractive Surgery- The cornea’s shape gets changed due to this laser surgery. There are multiple types, so an ophthalmologist can help you choose the right one. In order to do this, there shouldn’t be any corneal scars or retinal problems.
Treatable by medical professional Require medical diagnosis Lab test not required Chronic: can last for years or be lifelong Non communicable
Symptoms
Blurred vision Far or near sightedness

Popular Health Tips

Types and Benefits of Breathing Contact Lenses!

Dr. Varun Gogia 89% (10 ratings)
MBBS, MD - Ophthalmology, Vitreoretina and Uvea
Ophthalmologist, Gurgaon
Types and Benefits of Breathing Contact Lenses!
Variety of contact lenses is used to correct refractive errors. Soft Contact (hydrogel) Lenses are most often used in various types of refractive errors but they have certain disadvantages. These lenses do not permit adequate Oxygen to pass through which is essential for health of cornea and hence they can be worn for limited hours, i.e 6 to 8 hours maximum and never while sleeping. The tear proteins get deposited on these lenses which limit their life to about a year. If worn for prolonged period or proper measures not taken to clean the lenses, cornea can get an ULCER which at times can result in permanent loss of vision. Disposable daily wear lenses provide safer alternative but the cost increases significantly. Since soft contact lenses are applied after cleaning with a solution which can be the cause of mild to severe allergic conjunctivitis which can become intolerable. Soft contact lenses are not ideal in eyes with high corneal astigmatism. Merits of soft contact lenses are that they can be dispensed over the counter or purchased on line though it is not ideal. A correct curvature and power of a contact lens is determined by a contact lens specialist/ Ophthalmologist after measuring exact corneal curvature and using trial contact lens. Another merit is that these lenses can be accepted very easily since even on the first day they do not produce much of discomfort. These lenses can be worn off and on without any inconvenience. Recent introduction of Toric Contact Lenses have made them more acceptable in cases of moderate corneal astigmatism. Breathing Contact Lenses: These lenses are the one which permit significant amount of oxygen to pass through and hence can be worn for prolonged interval without any adverse effect on the cornea. These are of two types Semisoft or Extended Wear RGP Contact Lenses: These lenses are made up of FP 92 which is a semi rigid soft plastic and is highly permeable to oxygen. These lenses are excellent for high refractive errors, especially in patients who have high corneal astigmatism. Even cases with irregular cornea or Keratoconus, these lenses can be accepted with rewarding results. These lenses can only be fitted by an expert Ophthalmologist since precise measurement has to be carried out and various trial lenses have to be tried to evaluate the optimum fit. The lenses are made to measurement and the patient has to be precisely trained to fit the lenses and maintain them. As stated, the lenses can be safely worn while sleeping and there is practically no danger of corneal toxicity or infection. These lenses may last for 4-5 years. One of the demerits of these lenses is that they take 5-6 days to adopt and the patient is advised to use them regularly. They are excellent alternative to LASIK surgery. Silicon Hydrogel Contact Lenses: These are recent introduction of extended wear contact lenses with capacity to 'breathe' better than soft or hrdrogel contact lenses. Some of the recent Silicon Hydrogel Contact lenses introduced by Alcon and Bausch and Lomb can be worn for a week or so. Silicon hydrogel lenses though indicated for prolonged wear but can cause mild keratitis and sometimes allergic keratitis if worn overnight. These lenses still needs lot of improvement to be free of complications Advise: It is ideal to consult an Ophthalmologist specialized in contact lenses for fitting of a proper contact lenses. Advertised lenses some time misguide and can be damaging to the eye.
3696 people found this helpful

Astigmatism - Causes And Symptoms

Dr. Somdutt Prasad 90% (103 ratings)
FACS, FRCOphth, Fellowship of the Royal College of Surgeons (FRCS), MS - Ophthalmology, MBBS
Ophthalmologist, Kolkata
Astigmatism - Causes And Symptoms
Astigmatism is an eye condition where there is an imperfection in the curvature of the cornea. The cornea and lens are smooth and equally curved in all directions, which helps to focus the light rays to the retina. But if there is an imperfection in the curvature, then you will suffer from a refractive error. Astigmatism is not an eye disease. It is simply a condition where the eye is not able to focus the light. Causes: Irregular shape of the cornea is the main cause for astigmatism. It might also be caused because of the imperfect shape of the lens. Suffering from astigmatism is very common. You are either born with the condition or you might have developed it after an eye surgery. It is an incorrect concept that watching too much of television or reading without enough light causes astigmatism. Types: There are three different types of astigmatism: Myopic astigmatism: When the principal meridians of the cornea are nearsighted. Hyperopic astigmatism: When the principal meridians of the cornea are farsighted. Mixed astigmatism: When one of the principal meridians is nearsighted and the other is farsighted. It can also be classified in two other types: Regular astigmatism: When the principal meridians are perpendicular to each other. Irregular astigmatism: When the principal meridians are not perpendicular to each other. Symptoms: Blurry or distorted vision, strain in the eye, eye discomfort, squinting and headaches are a few symptoms of astigmatism Diagnosis: If you notice the symptoms stated above, make sure you pay a visit to your ophthalmologist. If you are suffering from astigmatism, your doctor will do an eye test to check how much your eye is able to focus on light. After conducting his tests, he will determine how much power you have and you will have to wear glasses of that power. Apart from the option of wearing glasses or artificial lenses, you can also go for a surgery to correct the condition. LASIK is an option among the many other options of surgeries available. Diet: Eat foods rich in sulphur. Foods like fish, green vegetables, pineapple, garlic, onion, olive oil, etc are rich in sulphur. Hence, eating these will help you battle astigmatism.

Astigmatism: 6 Signs You Might Be Suffering From It!

Dr. Charu Tyagi 86% (10 ratings)
MBBS, MNAMS - Ophthalmology, DNB - Ophthalmology
Ophthalmologist, Noida
Astigmatism: 6 Signs You Might Be Suffering From It!
Astigmatism is a typical vision problem that occurs when the shape of the cornea is distorted due to injuries or other causes. With astigmatism, the lenses of the eye or the cornea curves. This irregular curve can change the way light refracts or passes through your retina. This causes hazy, fluffy, or twisted vision. Farsightedness and partial blindness are two different sorts of issues with the way light goes to your retina. Farsightedness is called hyperopia. Partial blindness is called astigmatism. Types: There are two types of Astigmatisms. These are: Corneal astigmatism: It happens when your cornea itself is distorted. Lenticular astigmatism: Lenticular astigmatism happens when your lens is distorted. Risks: Astigmatism can happen in youngsters and grown-ups. Your danger of creating astigmatism might be higher if you have any of the following: A family history of astigmatism or other eye issues like dislocation of the cornea. Scarring or diminishing of your cornea Excessive partial blindness, which makes foggy vision at a separation Excessive farsightedness, which makes hazy close-up vision A past of eye surgeries, for example, cataract surgery (surgical expulsion of a blurred focal point) Symptoms: The side effects of astigmatism include: Hazy, Bended, Or Fluffy Vision At All Separations (Close-Up And Far Away) Trouble seeing during evening Lazy eye Squinting Irritation in the eye Cerebral Pains Diagnosis: Visual Acuity Assessment Test: Patients are required to read letters from a graph at a particular distance to decide how well they can see the letters. Refraction Test: A refraction test uses a machine called an optical refractor. The machine has various remedial glass lenses that are used to read an outline while looking through lenses on the optical refractor. Treatment: Keratometry: Keratometry is a route for your specialist to measure the bend of your cornea. They will do this by taking a look at your eye through a keratometer. Corrective Lenses: Remedial eyeglasses and contact lenses prescribed by a specialist are the most well-known and least obtrusive solution for astigmatism. Orthokeratology: Orthokeratology is a treatment that uses contact lenses to correct the deformation and flow of your cornea. You will wear inflexible contact lenses for certain time-periods. It is easier to wear them while you are sleeping and remove them during the day. Surgery: Your specialist may suggest refractive surgery if your case is a serious one. This kind of surgery includes use of lasers or little blades to reshape your cornea. This will correct astigmatism permanently. The three basic surgeries for astigmatism are: Laser in situ keratomileusis (LASIK) Photorefractive keratectomy (PRK) Spiral keratotomy (RK). All these surgeries might carry some risks depending upon the symptoms of your problem. As innovation advances, it is very important for the patient to explore more options before choosing which refractive surgery is a good fit for him or her.
3495 people found this helpful

What Are Breathing Contact Lenses?

Dr. Tejas D. Shah 90% (25 ratings)
MBBS, MS - Ophthalmology, Diploma in Ophthalmology , Fellowship in Cornea and Anterior Segment
Ophthalmologist, Ahmedabad
What Are Breathing Contact Lenses?
Variety of contact lenses is used to correct refractive errors. Soft Contact (hydrogel) Lenses are most often used in various types of refractive errors but they have certain disadvantages. These lenses do not permit adequate Oxygen to pass through which is essential for health of cornea and hence they can be worn for limited hours, i.e 6 to 8 hours maximum and never while sleeping. The tear proteins get deposited on these lenses which limit their life to about a year. If worn for prolonged period or proper measures not taken to clean the lenses, cornea can get an ULCER which at times can result in permanent loss of vision. Disposable daily wear lenses provide safer alternative but the cost increases significantly. Since soft contact lenses are applied after cleaning with a solution which can be the cause of mild to severe allergic conjunctivitis which can become intolerable. Soft contact lenses are not ideal in eyes with high corneal astigmatism. Merits of soft contact lenses are that they can be dispensed over the counter or purchased on line though it is not ideal. A correct curvature and power of a contact lens is determined by a contact lens specialist/ Ophthalmologist after measuring exact corneal curvature and using trial contact lens. Another merit is that these lenses can be accepted very easily since even on the first day they do not produce much of discomfort. These lenses can be worn off and on without any inconvenience. Recent introduction of Toric Contact Lenses have made them more acceptable in cases of moderate corneal astigmatism. Breathing Contact Lenses: These lenses are the one which permit significant amount of oxygen to pass through and hence can be worn for prolonged interval without any adverse effect on the cornea. These are of two types Semisoft or Extended Wear RGP Contact Lenses: These lenses are made up of FP 92 which is a semi rigid soft plastic and is highly permeable to oxygen. These lenses are excellent for high refractive errors, especially in patients who have high corneal astigmatism. Even cases with irregular cornea or Keratoconus, these lenses can be accepted with rewarding results. These lenses can only be fitted by an expert Ophthalmologist since precise measurement has to be carried out and various trial lenses have to be tried to evaluate the optimum fit. The lenses are made to measurement and the patient has to be precisely trained to fit the lenses and maintain them. As stated, the lenses can be safely worn while sleeping and there is practically no danger of corneal toxicity or infection. These lenses may last for 4-5 years. One of the demerits of these lenses is that they take 5-6 days to adopt and the patient is advised to use them regularly. They are excellent alternative to LASIK surgery. Silicon Hydrogel Contact Lenses: These are recent introduction of extended wear contact lenses with capacity to 'breathe' better than soft or hrdrogel contact lenses. Some of the recent Silicon Hydrogel Contact lenses introduced by Alcon and Bausch and Lomb can be worn for a week or so. Silicon hydrogel lenses though indicated for prolonged wear but can cause mild keratitis and sometimes allergic keratitis if worn overnight. These lenses still needs lot of improvement to be free of complications Advise: It is ideal to consult an Ophthalmologist specialized in contact lenses for fitting of a proper contact lenses. Advertised lenses some time misguide and can be damaging to the eye.
4044 people found this helpful

Decode Lasik - C-Lasik, I-Lasik, Contoura Vision Lasik

Dr. Sunita Lulla Gur 86% (69 ratings)
MS - Ophthalmology
Ophthalmologist, Delhi
Decode Lasik - C-Lasik, I-Lasik, Contoura Vision Lasik
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: Myopia or Nearsightedness: It is a condition wherein you enjoy a clearer vision while looking at objects that are close to you. However, distant objects would appear blurred. Hypermetropia or Farsightedness: Here, you may experience blurred vision while focusing on objects which are near to you but tend to enjoy better clarity in vision while viewing objects which are placed at a distance. Astigmatism: It is a condition disrupting focus of both the distant and close (near) vision. Learn About The Different Tyoes Of Lasik- C-Lasik- C-Lasik or Customized Lasik is gaining ground as the latest and the most effective tool for restoring the quality of one s vision. It uses a Wave front Guided customized ablation to render personalized treatment to each individual. While the surgical procedure stays the same, C-Lasik, also known as Eagles Eye Vision can provide the perfect shape to the eye surface, helping one to focus accurately. C-Lasik means that laser eye treatment is now unique to each eye. With C-Lasik, treatment is designed specifically to treat your individual vision errors. It improves the quality of your vision. Each C-Lasik assessment involves an extra diagnostic (screening) process to let the surgeon understand your vision better and select the most suitable treatment for you. iLasik- iLasik is the first vision rectifying procedure that is fully customized, done with the use of a laser. It is used to rectify myopia till a measure of 10 diopters, hypermetropia up to +5 diopters and astigmatism, till -5 dioptersafter evaluation of cornea. iLASIK is different from normal LASIK surgery because it recognises that every eye is different. Using 3D mapping technology, the characteristics along with the uniqueness of each eye is recognised. Then using this information, a blueprint is developed so that the lasers can target the right areas. High-frequency pulses are used to create a corneal flap which is lifted so that another laser can repair your eyes. iLasik is the only procedure that has the technology to personalize treatment to individual vision needs. In fact, wavefront measurements are 25 times more precise than those taken with conventional methods used for eyeglasses and contacts. Contoura Vision LASIK- Contoura Vision is the most advanced technology available for laser vision correction when it comes to accuracy and precision. This diagnostic technology is able to meticulously identify and record irregularities in the cornea s curvature as well as its optics. During the procedure, this information is combined with the patient s corrective eyewear prescription to dramatically improve vision for those suffering from nearsightedness (myopia) and astigmatism. While standard LASIK surgery has been helping individuals enhance correct visual refractive errors for many years, Contoura Vision takes the treatment a step further by offering even greater degrees of enhanced vision quality. Potential benefits of this technique can also include a reduced glare at night and even an increase in reading speed.
3947 people found this helpful

Popular Questions & Answers

Hello Dr. My son is 3.5 years old. Last 1.5 years back we got his eye checkup done in Hyderabad. It was diagnosed as astigmatism. Do we have any treatment for this? Now his eye sight is 1.5 and 2.

Dr. Vaibhev Mittal 90% (3149 ratings)
Fellowship in Comprehensive Ophthalmology, DOMS
Ophthalmologist, Sangrur
Hello I am sorry but there is only one option and that is glasses. At this age there is no option keep consulting your ophthalmologist every 6 months for general eye examination as this number may change with age.
1 person found this helpful

My son is having astigmatism as per his school health check-up report. Is this a serious issue. What is the treatment.

Dr. Ruchi Mehta 85% (24 ratings)
MBBS, MS - Ophthalmology
Ophthalmologist, Ahmedabad
Its not a serious issue. But yes when a child has astigmatism he or she has to wear his glasses continously. Prescribed by an ophthalmologist. Get his eye check up done every 6 monthly. For a child dilatation is required to find out the correct amount of refractive error or exact number of glasses. And after 4 days of dilatation get a glasses done. If you notice bend in glass or broken glass. Orr head tilting by him or her. Report to the doctor.

Hello! I'm 17 years old, and I have been wearing contacts for more than 5 years (I have astigmatism. I don't wear any glasses (just dailies), but I have noticed small blood vessels in my eye. It's not to the point where I look" stoned" but it bothers me and I don't want it to get worst. I act and model and don't want anything to get out of hand. What should I do? Thanks!:)

Dr. Sucharitra Picasso 92% (11774 ratings)
BHMS
Homeopath, Faridabad
Hi, Instill Euphrasia eye drops twice a day. Take 8 hours of sound sleep a night. Rest your eyes 10 minutes for every 50 minutes spent reading or in front of the computer. If your eyes feel overly tired, lie down and place cooling cucumber slices over your eyelids.

I am 25 years old M, I have astigmatism and myopia with combined power of 4 in each eye, I want to get LASIK surgery done. What is the success rate of the surgery.

Dr. Mukesh Paryani 92% (998 ratings)
FPRS, DNB Ophtalmology
Ophthalmologist, Pune
success rate is very good if properly selected cases are done with good machinery ,the success rates are close to 99% Lasik is a simple laser procedure which changes the shape of the cornea so that the light rays fall on the retina properly. It is a painless procedure. It is a day care procedure does not require any injections, does not require admission, you can simply resume your duties in 2 days. Cost varies from centre to centre. Side effects are usually limited to dryness of eyes for few months. We can do lasik anytime after age of 18 years. You need to undergo proper prelasik checkup to decide whether lasik is safe for you or not
1 person found this helpful

Health Quizzes

Busting Myths about Glasses and Contact Lenses

Dr. Vaibhev Mittal 90% (3149 ratings)
Fellowship in Comprehensive Ophthalmology, DOMS
Ophthalmologist, Sangrur
A contact lens is not recommended in case you are suffering from astigmatism. True or False? Take the quiz to know now.
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