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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.
Why does it happen?
There are lens 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.
If you are using glasses, are 18 years or older , have to wear glasses and wish to seek treatment for your glasses , you need to read on.
Brief information about LASIK Laser Vision Correction
What does Laser vision correction do ?
Laser vision correction is a technique used for the correction of spectacle number being worn by the patient . This treatment enables the patient to see clearly without glasses.
Who are the likely candidates for laser vision correction ?
Patients of Myopia ( wearing minus glasses ) , Hypermetropia ( wearing plus glasses ) with or without astigmatism are suitable candidates for laser vision correction. In addition , the patient must have achieved 18+ age and his/her spectacle number must have remained stable for 6-12 months .
What types of eye glass numbers can be treated ?
We can treat :
(-) Minus numbers
(+) Plus numbers
& Cylindrical numbers
What are the different techniques for correcting eye glasses ?
Beyond using glasses and contact lenses , there are basically two different ways of correcting the number of glasses.
1. Laser Vision Correction popularly known as LASIK
2. ICL or Phakic Lenses
Are there more than one techniques of Laser vision correction ?
Yes , there are different techniques to correct glasses with Laser
1. PRK / LASEK / ASA
2. Microkeratome based LASIK
3. Bladefree LASIK
The choice of technique for a particular patient depends upon the suitability determined after assessing the various parameters of the eyes with Pentacam topography which tells us about the thickness of the cornea amongst many other details. Depending upon the number of your eye glasses and calculating it against the corneal thickness helps us deriving the technique(s) available for your eyes specifically .
Bladefree LASIK utilizes two different lasers for doing laser vision correction .
Bladefree Lasik workstation with the Femtosecond Laser on the left , the Excimer laser on the right and a swinging patient bed which shifts the patient between these two lasers.
What is ICL ?
If after detailed checking ,corneal thickness is inadequate to carry out Laser vision correction , then ICL phasic intraocular lens implantation is considered as the final frontier.
With the ICL , very high numbers can be corrected quite accurately. Here also we have to test the patient suitability for ICL implantation.
How long do I need to stay in the Hospital for Laser vision correction ?
For PRK you may need to stay for approximately 6 days
For Normal LASIK , approximately 3 days
For Bladefree LASIK , approximately 3 days.
Local patients can reside at home.
What are the symptoms of fever and red eyes and jaundice and typhoid fever and stomach pain and headache.
I am 20years old I have red eyes over three days What should I do Please give me the suggestions any one to be easiest way waiting fr your answer.
I have a red eye in over 3 day what is this reason and I am exercise every day but not any change in my body. Why?
I have eye and nose allergy problem. I have used after recommendation of Lybrate doctors medicine like olopat eye drop, refresh tears along with montek LC tablet but have not cured this problem. My nose is still runny and eyes are itching a lot. please suggest me some quality medicine which can cure my problem permanently.
I hav eye problem and I can not wear such a high power glass. Is there any way to cure such like permanent lens.
I was not getting stool for many days and now I got cold and now I got headache and have running nose and eyes are burning and now I feel I'm getting fever the running nose is like watery.
There are flashes in my left eye also there appears to be a small dark spot towards the left corner of left eye this condition is existing since two months what may be the cause and treatment also I am diabetics and use glasses.
Sir in my eyes their is many red colour lines. In my both eyes how I take care of my eyes or remove the red lines any idea about this.
I have eye itching after travelling for hours. And eye becomes red after sometime. Please give me a good advice.
Cataract can be defined as the clouding of the natural lenses in the eyes. This is caused by the clumping of protein in the eye lens. Cataract is a common eye disorder and the leading cause of loss of vision in people who are past their fortieth birthday. Cataract can occur in one or both eyes. When diagnosed properly, cataract can be treated with surgery to prevent blindness.
Depending on where and how they develop, there are many types of cataract. The most common amongst these are:
- Subcapsular cataract: These occur at the back of the eye lens. Diabetic patients are very susceptible to this kind of cataract.
- Nuclear cataract: Yellowish-brown cataract that form in the center of the lens are called nuclear cataract. This is usually seen in cataract caused by ageing.
- Cortical cataract: Cataract in the lens cortex are known as cortical cataract. These are wedge shaped and whitish in color. Spokes protruding out of these opaque wedges can be seen moving towards the center of the eye.
- Congenital cataract: Though they are not common, babies can also have cataract. Cataract formed at birth or within the first year of a baby's birth are known as congenital cataract.
- Secondary cataract: Cataract is one of the known side effects of diabetes and glaucoma. Some steroids and medicines are also linked to cataract.
- Traumatic cataract: If your vision becomes cloudy years after an eye injury, it could be a traumatic cataract. It can take several years for this to happen.
- Radiation cataract: Exposure to radiation can also lead to cataract. This is seen sometimes in patients who have undergone radiation therapy to fight diseases like cancer.
Though the type of cataract might differ from person to person, the symptoms are usually the same. Some of the common symptoms of cataract are:
- Blurred vision
- Reduced night vision
- Increased sensitivity to light and glare
- Seeing halos around lights
- Colors appearing faded
- Double vision
- Frequent change in (glass power) refraction
A reading test is the first step towards diagnosing cataracts. This is followed by tests to measure the eye pressure. Your doctor will also need to dilate the pupil to check the condition of the optic nerves and retina.
Surgery is the safest way to remove a cataract. Surgery is usually recommended when cataract begin inhibiting your daily life such as preventing you from driving, interfering with reading etc.
In most cases, this can be done as an outpatient procedure. The earlier it is diagnosed, the easier it is to treat. Hence, if you notice any of the symptoms mentioned above, get your eyes checked at once. The surgery is a day-care surgery only, so a person can go home the same day. If you wish to discuss about any specific problem, you can consult an Ophthalmologist.