Cataract is clouding of clear natural lens present inside the eye, this is a major cause of decreased vision in elderly. Cataracts can occur in one or both eyes, usually developing very slowly. Things look blurry, hazy, less colourful and less sharp with cataract. 

Most cataracts are related to ageing, however many other factors can either increase the rate of formation or cause cataract formation. 

Causes of Cataract Formation-

Ageing: Most common cause. As the proteins present in the lens of the eye degenerates over the years ( just like any other organ) cataract is formed. If you are having Diabetes or hypertension, the rate of formation gets accelerated.

Radiation: Prolonged exposure to ultraviolet rays, especially UV-B rays, results in cataract in your eyes. Wearing sunglasses in the daytime helps in slowing down the process of cataract.

Genes: Many genetic disorders can result in congenital cataract ( cataracts present since birth) or early formation. Like in Lowe syndrome or Down's syndrome. 

Lifestyle Choices: Cigarette smoking, long hours of sun exposure regularly, antioxidant, poor diet etc. are responsible for the onset of cataract.

How To Detect Cataract?

Certain signs and symptoms suggest the existence of cataract in the eye. Depending on the type and level of cataract, problems in vision occurs. The main symptom is foggy cloudy vision as if seeing through a dirty glass window. 

Other Symptoms are- 

inability to see clearly in bright light (during the day) which becomes better in dim light ( evening and night) and vice versa. 
watery, tired eyes - mild pain in and around eyes. 
yellow tinge in vision 
Halos around light bulbs or bright light. 
If you are experiencing above symptoms and having problems in viewing things clearly, visit an ophthalmologist and get your eyes checked.

Foggy and Cloudy Vision - A Sign Of Cataract?

There are many common measures people take to improve their eyesight or to improve their vision, including wearing glasses, lenses, and many more. Here are some effective exercises, which can prove to be highly beneficial to improve your eye health:

1. Stretching
This is the most common and also one of the easiest to do. It requires you to just look up, hold for two seconds, look down, hold for two seconds and then repeat this procedure for each corner of your eye, which means top-left, top-right, bottom-left and bottom-right corners.

2. Flexing
This is simply rotating your eyes in circles. Roll your eyes in the clockwise direction for one minute and then roll your eyes in the anticlockwise direction for one minute.

3. Focus switching
This particular eye exercise is probably the most useful one to improve eye health. In this eye exercise, you have to hold something at a reading distance and cover the other eye. You then have to find something that is at least twenty feet away and trace its shape with one eye closed. With one eye closed, trace more shapes, which are twenty feet away.

4. Palming
This exercise is also very simple to perform. All you have to do is cover your eyes with your palms. Once you have done this, just wait and see that there are no bright flashes of light. If you see that there is a bright flash of light, just wait till they go. This is used primarily to distress the eyes.

5. Deep blinking
This is also an incredibly useful exercise for distance vision. What you have to do is to place some large letters are at a fair distance and then sit on a chair. You have to then close your eyes and tighten all your muscles for 5 seconds. After 5 seconds are over, you have to open your eyes and then you have to see the letters for a second or two. The more number of times you do this, the more clearly you will be able to see the letters after reopening your eyes.

However, these eye exercises are not universally accepted by all doctors.

Exercises to Improve Eye Health

An inflammation resulting in the formation of a thin layer inside the eyelids or the white part of the eyeball is known as pink eye or conjunctivitis. This condition turns the eye ball into pinkish color, hence the name. Based on the severity of the infection, either one or both eyes get affected.

What are the common symptoms?

Medium to heavy swelling of the eye
Eye crusting after sleep
A burning sensation
Irritation, itching or blurred vision
Redness and increased sensitivity of the eye
Different kinds of conjunctivitis:

Allergic Conjunctivitis: This is the type of conjunctivitis that results from eye irritants such as animal dander, dust particles and pollen. This is not infectious in nature. Treatment prescribed by ophthalmologist includes eye drops and non-steroidal medications. It is advised to keep the eye moist till it gets cured.
Viral Conjunctivitis: As the name suggests, this kind of conjunctivitis is caused due to a viral attack. Sadly though, antibiotics don t work and there is no particular medication for this type of conjunctivitis. Like common cold, viral conjunctivitis runs its course in a span of 1-2 weeks. Since virus is contagious, it is necessary to ensure that the microbes don t spread. Some common prevention measures are listed below:
Eye cosmetics should be abandoned till the conjunctivitis is cured
Hands should be frequently cleaned
Hand and eyes should not be in contact
Frequent change of pillow covers, towels and clothes
Swimming should be completely avoided
Spectacles in place of lens should be used until advised otherwise by a medical practitioner
Bacterial Conjunctivitis: This kind of conjunctivitis is caused by the streptococcal bacteria and has potential to cause real damage if proper medication is not taken on time. This is highly contagious. Prescription often includes antibiotic drop and ointments. The medication is prescribed for 2-3 weeks depending on the level of bacterial spread in the eye. It is very essential to complete the full course of medication to avoid recurrence. Prevention measures as stated above should be strictly followed.
Chemical conjunctivitis: Eye irritants such as chlorine cause this conjunctivitis. Frequent swimmers often get affected by this type of eye infection. Topical steroids are prescribed to cure this kind of infection. Immediate medical attention is required to avoid lasting injury to the eye.
How to prevent pink eye?
While prevention is the best way to refrain from conjunctivitis, some basic hygiene checks are very important. Here is a list of must do s:

Do not share personal items such as combs, towels and toiletries.
Stay away from a conjunctivitis infected patient
Using of goggles while swimming
Frequent usage of hand sanitizer and hand wash

Pink Eye - How You Can Prevent It

Bloodshot eyes aren't exactly the best feature of a person! When a person's eyes are bloodshot, it is quite easy to 'see' that something is wrong! Eyes are possibly the most delicate organs of the body, and are all the more vulnerable to infections such as 'subconjunctival haemorrhage'. However, as dour as such terms may sound, there is a lot which really should be known about them!

The eye has a thin layer which goes by the name of the conjunctiva, which covers a part called the sclera. Many a times, especially in the case of children, if an injury unfortunately occurs in the eye, there are chances that it may form subconjunctival haemorrhage.

The reason why this occurs is that there are some of the very small blood vessels in a person's eye break. The reason for this, apart from an injury could also be on account of a sudden increase in the blood pressure of the person. This usually takes place due to some very strenuous lifting exercise but also can occur due to laughing or sneezing!

The occurrence of a subconjunctival haemorrhage can also be closely linked to the consumption of pills which thin the blood such as aspirin.

Treating Subconjunctival Haemorrhage

Now, considering the fact that such a haemorrhage has the potential to look quite scary, it may be natural for a person to react proactively. However, in many cases this is not required at all. As a matter of fact, the issue clears up within a couple of weeks at the maximum and a week and a half, on average. If this does not happen to be the case, it is a signal that a medical professional should take a look at the patient's eye.

In many instances, a person may not even get to know that he or she is suffering from a subconjunctival haemorrhage as there is no effect on the vision of the person and he or she would probably get to know that this is the case by taking a look in the mirror or being informed of his or her eye looking red.

In order to treat a subconjunctival haemorrhage in an effective manner, the first thing to be done by a person is to avoid any medication which could be causing it. Also, it is quite important not to rub one's eye as this really does slow down the healing process.

Artificial tears help soothe the eye but they do not hasten the rate of repair. A subconjunctival haemorrhage may occur, but if a person follows the right steps, his or her vision can consistently remain 20/20!

All About Subconjunctival Haemorrhage

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:

1. Corneal astigmatism
It happens when your cornea itself is distorted.

2. 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:

1. A family history of astigmatism or other eye issues like dislocation of the cornea.
2. Scarring or diminishing of your cornea
3. Excessive partial blindness, which makes foggy vision at a separation
4. Excessive farsightedness, which makes hazy close-up vision
5. A past of eye surgeries, for example, cataract surgery (surgical expulsion of a blurred focal point)

Symptoms; The side effects of astigmatism include:

1. Hazy, Bended, Or Fluffy Vision At All Separations (Close-Up And Far Away)
2. Trouble seeing during evening
3. Lazy eye
4. Squinting
5. Irritation in the eye
6. 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:

1. Laser in situ keratomileusis (LASIK)
2. Photorefractive keratectomy (PRK)
3. 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.

Types and Treatment for Astigmatism

LASIK stands for Laser In-situ Keratomileusis. This is a common eye surgery that helps in correcting vision problems. During this procedure, the cornea of the eye is cut across by a medical expert to raise the tissues and reshape them to correct vision. LASIK is suitable for patients who have shortsightedness, long sightedness or who suffer from astigmatism.

Here are the 5 benefits that a LASIK surgery offers:

1. Improved vision

A study reveals that 95% of the people who underwent this surgery achieved uncorrected visual acuity of 20/40 and 85% of the people achieved 20/20 vision. This procedure ensures that a patient achieves enhanced vision.

2. Quick results and recovery

This surgery enables you to return to your normal schedule immediately the day after the surgery. You can have clear and improved vision within a day.

3. Long- lasting outcomes

A minimum timeframe of 3 months is required for the eyes to adjust, after which LASIK results are permanently noticeable in a patient. No follow up procedures are required unless something wrong went with the surgery. The patient will continue to have improved vision unless there is any normal loss due to illness or aging.

4. No need of glasses

You no longer require glasses as your vision turns to normal post-LASIK surgery.

5. Goodbye contact lenses

LASIK surgery will help eliminate the need for contacts. You will be able to avoid all the problems pertaining to wearing a contact lens, including lens solution.

5 Benefits of Lasik Surgery

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