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A cataract is defined as a clouding of lens in the eye where your vision gets blurred. A cataract affects the eyes, when light that passes through the lens prevents a clearly formed image from reaching your retina. The disease is very common and usually, develops as your eyes age or due to any injury caused to the tissues that cover your eye's lens.
Types of cataracts:
- Senile Cataract: This is the commonest of all. It is age-related clouding of the lens. It can affect the near or distance vision and can also cause glare and change in glasses power.
- Secondary Cataract: It can be developed after surgery for other eye problems like glaucoma and other health conditions such as diabetes.
- Traumatic Cataract: It can develop many years later after an injury caused to your eye.
- Congenital Cataract: As the term explains, the disease may be inborn or some children might develop it at a later stage which often affects both eyes.
- Radiation Cataract: It can form after you are exposed to some form of radiation.
A cataract surgery involves the extraction or cleaning of the cloudy lens, which is then replaced by a clear artificial lens.
There are lenses that lies behind our iris and pupil which act much like a camera lens. It helps concentrate light onto the retina at the back of our eye to form a sharply defined image. Besides, the lens also helps our eyes to adjust focus and allows us to see things clearly both far away and up close. The lens is composed of protein and water where the protein is arranged in a manner to keep the lens clear thereby letting light pass through it.
However, as we grow old, some of the protein starts to become thick and cloud a small lens area. This is known as a cataract. With the passage of time, it may inflate and cover more of the lens, making it difficult for us to see.
Besides, there are other causes of cataract such as smoking, addiction of alcohol, prolonged sunlight exposure, to name a few.
When should you opt for a cataract surgery?
Believe it or not, but till date no eye drop or medication has proven to reverse or prevent the formation of a cataract. If a cataract is affecting your nearsightedness or alteration in your prescription, then new prescription eyeglasses may help to better your blurred vision. However, the only treatment for a cataract is the surgical removal of your natural lens. And, most eye doctors recommend this surgery only when the problem becomes severe and starts hampering your day-to-day activities, such as studying or driving at night.
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Cataract surgery is a procedure to remove the lens of your eye and, in most cases, replace it with an artificial lens. Normally, the lens of your eye is clear. A cataract causes the lens to become cloudy, which eventually affects your vision.
Cataract surgery is performed by an eye doctor (ophthalmologist) on an outpatient basis, which means you don't have to stay in the hospital after the surgery. Cataract surgery is very common and is generally a safe procedure.
How a cataract affects your vision
Cataract surgery is performed to treat cataracts. Cataracts can cause blurry vision and increase the glare from lights. If a cataract makes it difficult for you to carry out your normal activities, your doctor may suggest cataract surgery.
When a cataract interferes with the treatment of another eye problem, cataract surgery may be recommended. For example, doctors may recommend cataract surgery if a cataract makes it difficult for your eye doctor to examine the back of your eye to monitor or treat other eye problems such as age-related macular degeneration or diabetic retinopathy.
In most cases, waiting to have cataract surgery won't harm your eye, so you have time to consider your options. If your vision is still quite good, you may not need cataract surgery for many years, if ever.
When considering cataract surgery, keep these questions in mind:
- Can you see to safely do your job and to drive?
- Do you have problems reading or watching television?
- Is it difficult to cook, shop, do hardwork, climb stairs or take medications?
- Do vision problems affect your level of independence?
- Do bright lights make it more difficult to see?
Complications after cataract surgery are uncommon, and most can be treated successfully.
Cataract surgery risks include:
- Drooping eyelid
- Dislocation of artificial lens
- Retinal detachment
- Secondary cataract
Loss of vision
Your risk of complications is greater if you have another eye disease or a serious medical condition. Occasionally, cataract surgery fails to improve vision because of underlying eye damage from other conditions, such as glaucoma or macular degeneration. If possible, it may be beneficial to evaluate and treat other eye problems before making the decision to have cataract surgery.
Lasik is a safe surgery, if your topography and pachymetry reports are Normal, get your eyes tested for Lasik today
Hi, When the squint operation results know whether it successful or need one more sit, immediately that day itself or its take time.
A cataract usually forms in the eyes due to clouding of the naturally clear lens that coats the eyes.This coating is usually a matter of age advancement or any other injury that the eyes may have sustained. It may also be a birth defect that a baby may be born with. There are various ways to deal with this debilitating condition. One of the methods of treatment includes cataract surgery. Read on to find out more about this form of treatment.
Procedure: During this surgery, the ophthalmologist will remove the cloudy lens and clean it before replacing it with a man-made lens.The technique followed for this procedure is known as phacoemulsification which involves a small cut or incision for the cataract surgery. The incision helps the doctor in liquefying and then vacuuming the centre portion of the lens, which is slightly harder than the rest of the lens.
Device: The doctor will usually administer anaesthesia first and then make the tiny incision on one side of the cornea. Thereafter, an instrument or device will be inserted through this opening to send out ultrasonic vibrations to the eye. These vibrations will help in breaking the lens into tiny pieces. These fragments will be removed with the help of a suction that will go in through the tiny cut. This cut may also be made with the help of a laser beam.
New Lens: Once the fragments of the old lens have been cleared, the doctor will go about the process of inserting the new man made lens which is usually made up of clear plastic, acrylic or even silicon, and is known as IOL or intraocular lens. This process is generally termed as intraocular lens implantation.
Improved Vision: With the help of the new lens, the patient will now enjoy better vision and a visible decline in the symptoms of the cataract including problems in night driving.
Convenient: This procedure usually takes about an hour and is an outpatient procedure. It is a completely safe procedure where numbing drops are placed on the eye so as to reduce any pain significantly. The doctor will usually give you a novocaine injection around the eye. Also, cataracts from both eyes will not be removed on the same day, and the doctor will schedule you for cataract removal from the second eye for another day.
Aftermath: After the surgery is over, it is normal to feel some amount of irritation in the eye. If this irritation is persistent, you must see a doctor about it.
Myopia is a common refractive error of the eye that makes it difficult to focus on far away objects. People who are nearsighted will see objects close to them clearly, while those further away appear blurry. Myopia is natural. An overall longer shape of the eye usually causes myopia, so it is a naturally occurring visual problem that cannot be prevented. Nearsightedness tends to run in families, but you don't need to have a myopic parent to develop it. Myopia begins at an early age and worsens in the teenage years, but generally stabilizes in adulthood.
Here are the most common signs and symptoms of myopia:
- Objects far away, like a chalkboard or road signs, appear blurry
- Persistent need to squint or close eyelids to see clearly
- Headaches due to eyestrain
- Difficulty seeing while driving a vehicle, especially at night (night myopia)
- Need to sit closer to the television, movie screen or the front of the classroom
- Holding books very close while reading
- Not able to notice distant objects
Causes of Myopia
Nearsightedness happens when your eye is longer than normal, or, less often, when your cornea is too curved. It’s a problem in the focusing mechanism of the eyes. However, the exact cause of myopia is not known. Research about myopia supports two key risk factors:
- Family history. If one or both parents are nearsighted, the chance of their children developing it increases.
- Working up close. Myopia may be helped along by how a person uses their eyes. Intense detail work, long hours in front of a computer or reading can also increase the chances of developing myopia.
Treatment Options for Myopia (Nearsightedness)
When treating myopia, the goal is to help your eyes focus on far away objects. The most common way to achieve this is through
- Corrective glasses
- Contact lenses
- Refractive eye surgery, such as LASIK, is available for adults and those with moderate to high levels of nearsightedness
Adults who have developed cataracts may also have their myopia corrected with an intraocular lens (IOL) that replaces the human lens during cataract surgery. The most appropriate treatment depends on your eyes and your lifestyle. Nearsightedness can also be corrected as part of the cataract surgery procedure.
- Contacts and Glasses: Eyeglasses and contact lenses can correct myopia. However, they cannot stop the eye from growing longer or cure the irregular curve of the cornea that causes your blurry vision.
- Surgery: Surgery can decrease or eliminate dependency on eyeglasses and contact lenses. LASIK surgery is the most common type of surgery to correct myopia.
- ICL (intraocular collamer lenses) or phakic lensesIn adults with cataracts, is an option for those myopic patients who are not suitable for lasik surgery due to either less corneal thickness or very high myopia.
- Orthokeratology: A new type of treatment which offers an alternate solutions to people who are suffering from myopia. This is also known as Ortho-K. As a part of this procedure a person has to wear specialized lens overnight, to correct the vision for the next day. Orthokeratology is a process that uses specially designed GP contact lenses to temporarily reshape the contour of the cornea to reduce myopia (nearsightedness). In addition to the benefit of lens-free daytime vision, orthokeratology is starting to be appreciated for its ability to slow the progression of myopia. A number of published clinical studies have found that orthokeratology lens designs inhibit the growth of the eye's axial length, which determines the degree of myopia.
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.
This is a condition which can be caused in the delicate folds of the skin over the eye called the eyelid. The eyelids usually protect us from extreme light, and the entrance of other debris as well as against injuries to the delicate interiors of the eyes. The eyelid may get irritated or experience varied sensations like prickling, burning or itching, with a dull ache or sharp pain due to many reasons. This discomfort and irritation is usually caused by inflammation. Let us learn more about this condition.
Eyelid Inflammation: Blepharitis or eye inflammation is a condition that causes eyelid irritation because of allergic reactions as well as infections, dandruff in the eyelashes and eyebrows, pollutants and varied other causes. Also, poor hygiene can lead to the growth of eyelash lice which can also enter the eyes and lead to inflammation and irritation of the eyelids. A malfunctioning oil gland can also cause this kind of problem along with side effects of certain kinds of medication.
Types of Inflammation: This condition can be of two types :- anterior and posterior. Anterior eye inflammation causes irritation in that part of the eyelids which are outside the eyes where the eyelashes are situated. Dandruff and allergic reactions can also cause this kind of irritation. Posterior eyelid inflammation is a condition that can be found in the inner rims and corners of the eyes where malfunctioning oil glands found in the follicles of the eyelashes can cause this problem leading to blurry or cloudy vision as well.
Symptoms: Apart from irritation and not being able to close the eyes properly, there are many other symptoms of this condition. These symptoms include sensitivity to glares of light, oily eyelids, burning and itching sensation, and a feeling that some particles have entered your eyes and formed a crust on your eyelashes.
Checking for an Infection: Many of these symptoms can point at the presence of an infection, especially when accompanied by fever and headaches. Yet, irritation can also just be a cause of simple inflammation or due to the entry of a foreign body into the eye. Still, it is always best to get the symptoms checked by an ophthalmologist who will conduct a detailed eye exam along with lab tests based on blood samples in order to ensure that there is no bacterium or virus infecting the body.
Treatment: Antibiotics will be used only when there is an infection. As a home remedy for this condition, you can apply a warm wash cloth and clean your eyes frequently. In case you have a concern or query you can always consult an expert & get answers to your questions!
Dry eye is becoming increasingly prevalent in our population, due to usage of digital media, please contact a good ophthalmologist to get your eyes checked for dryness and now the good news is we can even treat it.