A cataract is a condition that causes the blurring of the naturally clear eye lens. For individuals suffering from cataracts, their vision through the blurred lens is somewhat similar to staring through a hazed up or frosty window. Blurred vision which is a result of cataracts can make driving a vehicle (particularly during the evening), reading or making out the expression on ones face very difficult tasks.
In most of the cases, cataracts increase gradually in people and don't impair their vision at its early stages. However, this cataract will eventually cause vision impairment to such individuals.
During its early stages, eyeglasses and more grounded lighting can assist with managing cataracts. Be that as it may, if bad eyesight meddles with your regular exercises, you may have to undergo cataract surgery. Luckily, the cataract surgery is a very benign and successful treatment.
The symptoms of cataracts are:
- Blurred, obfuscated or clouded vision
- Dual vision in one eye
- Worsening problem with vision during the evening
- Yellowing or fading of colors
- Light and glare sensitivity
- Seeing "halos" surrounding lights
- Requires brighter light perform different exercises including reading
- Constant modifications in contact lens or eyeglass prescription
Initially, the blurred vision you experience as a result of cataract may influence just a little section of the lens in the eye and as such you might be oblivious of any vision impairment. The cataract continues to grow bigger, clouding a greater part of your lens and interferes with the light filtering through it. This may prompt more perceptible side effects.
In most cases, cataracts are caused by maturity or harm alterations to the tissue that forms the lens of the eyes.
A number of other acquired hereditary conditions that can lead to other medical complications can lead to a higher risk of you having cataracts. Other eye problems, prior eye surgery or health complications, for example, diabetes can likewise lead to cataracts. Prolonged use of steroid prescriptions can also lead to cataracts.
Formation of cataract
The lens situated behind the colored area of your eyes (iris) is where the formation of cataracts takes place. light that passes through the eye is focused by the lens to provide perfect, sharp images on the retina, which is the light-sensitive layer in the eye has the same function as a camera film.
With maturity, the eye lenses turn out to be less clear, denser and less flexible. Ageing as well as a couple more medical issues brings about the degrading and eventual clumping together of the tissues inside the lens, thereby blurring little parts inside the lens.
With continuous buildup of the cataract, the blurring gets to be distinctly denser and covers a greater area of the eye lenses. The cataract dots all across the lenses and obstructs the light filtering through the lens, causing the image that reaches the retina to be distorted and unclear. Hence, the clouded vision you experience.
For the most part, cataracts occur in both eyes, though not uniformly. One eye might have a slightly more pronounced case of cataract than the second eye, creating a variation in the vision of both eyes.
Types of cataracts
The various types of cataracts are:
- Cataracts influencing the focal point of the lens (nuclear cataracts).
- Cataracts present birth (congenital cataracts).
- Cataracts that influence the back of the lens (posterior subcapsular cataracts).
- Cataracts that influence the peripheral parts of the lens (cortical cataracts).
Variables that improve your chances of cataracts are:
- Excessive alcohol consumption
- Lots of time spent in the sun
- High blood pressure
- Prior eye injury or irritation
- Long term utilization of corticosteroid drugs
- Prior eye surgery
To figure out if you suffer from cataract, the eye specialist will check your symptoms and assess your medical records, and examine your eye. The tests done are:
- Visual acuity test. This form of test makes use of an eye map to deduce your ability to read a couple of random letters. One of your eyes is closed while the other is tested and the process is then repeated with the second eye. Utilizing an eye chart or a visual aid gadget with letters in smaller prints, your eye specialist diagnoses whether your vision is 20/20 or if you exhibit symptoms if vision loss.
- Slit-lamp evaluation. This procedure permits your eye specialist to view the structures at the fore part of the eye under amplification. The magnifying instrument is known as a slit lamp since it utilizes a strong line of light, a slit, to brighten your iris, cornea, lens, as well as the gap between your cornea and iris. The eye specialists can view these structures in little sections through the slits, making it possible to identify any small variations from the norm.
- Retinal examination. To get ready for a retinal examination, your eye specialist places eyedrops in your eyes to widen your pupils (dilate). This simplifies the process of examining the posterior region of your eyes (retina). The eye specialist can check your eyes for indications of cataracts with the help of a slit lamp or a unique tool known as the ophthalmoscope.
At the point when recommended glasses can't give you a clear vision, the sole remaining cataract treatment procedure is to undergo surgery.
When to consider cataract surgery
For the vast majority of individuals, there isn't any need to hurry to get rid of the cataracts as they generally don't hurt the eye. However, individuals suffering from diabetes can see their cataracts get worse over a short period of time.
Leaving the procedure till the very end doesn't influence the extent to which your vision recuperates in the event that you later choose to undergo cataract surgery. Contact your health specialist to comprehensively discuss the advantages and dangers of undergoing surgery for cataracts.
What happens during cataract surgery?
The surgery procedure necessitates the removal and replacement of the blurred lens with a clear artificial lens. Also known as an intraocular lens, the artificial lens is situated in same exact spot the original lens used to be located. It becomes a lasting part of your eye.
For a few other individuals, the presence of other eye complications renders them unable to use artificial lens. In cases like this, if the cataract is gotten rid of, vision might be restored with contact lenses or traditional eyeglasses.
Surgery as a form of cataract treatment is often performed on an outpatient premise, which implies that you won't be expected to remain in the clinic following the surgery procedure. the surgeons at our eye facility requires patients to be admitted for at least one to two days following the surgery procedure to ensure the most ideal outcomes is achieved. During the surgery, our specialists utilize local anesthetic to deaden the region surrounding the eye, though you will be awake all through the surgery.
Undergoing surgery for cataracts is quite benign, though it increases the dangers of:
- Retinal separation
You will experience some level of uneasiness for a couple of days following the surgery. Recuperating usually happens inside eight weeks.