Cataract is generally associated with old age. However, in some unfortunate cases, children could be affected by cataract as well. A cataract can be defined as a cloudy or opaque layer that forms on the eye's natural lens that lies behind the iris and the pupil, leading to eventual loss in vision. Cataract can affect children in one eye or both eyes.

Cataract can be a congenital birth defect or can develop as the child grows older. The latter case is known as pediatric cataracts. The exact cause of cataracts in children is not known, but it has been associated with a number of genetic disorders, low birth weight and infections during pregnancy. Traumatic events such as an injury to the eye can also cause cataracts.

The earlier a cataract is diagnosed and treated, the better it is. It is easier to identify a cataract that affects both eyes than a cataract that affects only one eye. If a congenital cataract is not treated in time, the part of the baby's brain used for sight may not develop properly. Hence it is crucial to recognize cataract symptoms.

Here are a few you should look out for:

    Not looking directly or responding to large, colourful objects.
    Not being able to find small objects while crawling.
    Excessive squinting or shielding their eyes to bright sunlight.
    Eyes that do not focus on the same point.
    White reflex instead of a red reflex in photographs.
    Uncontrolled movement of the eye.

Cataracts that are too small to affect sight can be treated with eye drops to dilate the pupil. However, this provides only temporary relief. Surgery is the most preferred form of cataract treatment. This surgery can be performed even in the first few weeks of a baby's life. The child is put under anesthesia and a microsurgical instrument is used to break the lens into small pieces and remove it.

This surgery is followed by the use of lenses or glasses to help the eye regain its power to focus again. In some cases, the lens may be implanted to replace the natural lens. In cases where cataract affects only one eye or one eye is more severely affected than the other, there may be a tendency to develop amblyopia or lazy eye syndrome. In such cases, it becomes necessary to patch the good eye shut and stimulate vision in the eye that has undergone surgery.

Cataract in Children

Glaucoma is a group of eye diseases characterised by damage to optic nerve usually due to excessively high intra ocular pressure (eye pressure). If left untreated can lead to optic nerve damage resulting in progressive, permanent vision loss. Glaucoma usually affects people above the age of 40, but can affect younger people as well. This condition causes fluid to build up in the eye, which puts pressure on the optic nerve. 

There are broadly two types of glaucoma - Open angle glaucoma ( more common in elderly) and angle closure glaucoma.
Women are more likely to suffer from glaucoma than men are. Ethnicity also plays an important role in determining the risk of suffering from this condition. East Asian and African Americans have a high risk of glaucoma, as they have a shallow, anterior chamber depth. Some of the other conditions that can increase a person s risk of glaucoma are:

Diabetes
Hypothyroidism
Myopia
An earlier eye surgery
Retinal detachment
Tumours
Injury to the eye
Long term corticosteroid medication
If diagnosed early enough, glaucoma can be treated and its effects can be reduced. However, the damage already caused by glaucoma cannot be reversed. The aim of glaucoma treatment is to either reduce the production of fluid in the eye or improve its flow. This helps slow down the progression of this disease and prevents any further loss of vision. Glaucoma treatment usually takes the form of eye drops or surgery.

Eye drops are the first step towards treating glaucoma. There are many different types of eye drops. Prostaglandin analogues aim at increasing the flow of fluid out of the eye and are usually prescribed in cases of swelling around the rim of the eyes, darkening of the iris and blurred vision. Beta-blockers can also help lower the secretion of fluids in the eye.

Patients who are also suffering from diabetes or lung conditions such as bronchitis may be prescribed cholinergic agents, carbonic anhydrase inhibitors or sympathomimetic drugs. Cholinergic agents help improve the outward flow of fluid in the eyes while Carbonic anhydrase inhibitors reduce fluid production in the eyes. Sympathomimetic drugs do both reduce the production of fluids and improve outflow.

If the eye drops are not effective, surgery may be advised to lower the pressure built up in the eye. Some of the common types of surgery for glaucoma are:

Trabeculoplasty: This procedure involves directing a high-energy laser beam into the eye to open clogged drainage canals. The surgery has high success rates but the problem may recur after surgery.
Filtering surgery: This involves creating an opening in the eye and removing a part of the trabecular meshwork, thus allowing fluid to flow outwards.
Drainage implants: Children or patients with secondary glaucoma may be treated with this surgery where a small silicone tube is placed in the eye to aid in fluid drainage.

Glaucoma - Factors That Put You Risk!

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

Allergic conjunctivitis is the result of a foreign particle (allergen) coming in contact with the eye. Once this happens, the immune system overreacts resulting into an inflammation of the eye. The eyes sore with pain. The over secretion of the histamine dilates the blood vessels causing the nerve to irritate and blood vessels of the eyes to expand. Some common reasons of allergic conjunctivitis include eye drops, pollen, dust mites, makeup and animal fur. The good news is that allergic conjunctivitis is easily treatable. Here are top five ways to deal with this condition:

Taking care of the eye: It is advised not to wear contact lenses until the symptoms go away fully. If any medication is used, a person must wait for at least 24 hours before putting on the contact lenses. Sometimes our hands carry major pollens that result in allergic conjunctivitis. It is equally important not to rub the eye without washing both the hands. Many studies have also reported that frequent bathing of the eye with cold water helps to clear the symptoms quickly. Some even say that frequent splash of warm water does the trick.
Avoid the allergen: Allergen being the villain behind the occurrence of this condition, it is very important to stay away from it. In peak pollen times, it makes sense to close the door. In case a person must go out, it makes sense to wear a sunglass. A pillow made of feathers should be changed every week to stay away from the infection. The number of dust mites at home should be decreased as much as one can.
Antihistamines: To quickly get rid of allergic conjunctivitis, doctors often prescribe antihistamines. It can be in the form of eye drop or oral presentation. They can successfully counter the effect of histamine which the body produces because of the hyper activity of the immune system. An antihistamine can block the aggressive effect of the immune system in a short time. Some of the commonly prescribed histamines include loratadine, cetirizine, emedastine, and ketotifen. People taking this form of the medicine for the very first time should refrain from carrying heavy load or driving.
Mast cell Stabilizers: These takes a little longer to act as compared to antihistamines. Their effects, however, are more lasting compared to its peers. Some of the popular mast cell stabilizers include nedocromil and lodoxamide. This medicine belongs to a non-steroid family and can successfully block the chemicals that cause inflammation.
Corticosteroids: These medicines are only prescribed by doctors when the symptoms of allergic conjunctivitis are serious. They belong to the steroid family of medicine produced synthetically. They can reduce the immune response of the body quickly and reduce the swelling as well. They can have possible side-effects. It is therefore wise, to consult a doctor before using it.

Allergic Conjunctivitis - 5 Top Ways To Deal With It!

Bloodshot eyes indicate the reddening of the eye vessels. They can cause irritation and make the eye swollen. The condition may arise due to allergies, eye infections, allergies, fatigue and other illness of the eye. It does not signify a disease but indicates an eye condition which might have caused the eye to redden. Bloodshot eyes can be encountered in one or both the eyes.

Causes of Bloodshot Eyes:

One of the frequent causes of bloodshot eyes is irritants such as dry air, pollen, pet dander, dust and UV rays of the sun. Shortage of sleep also tends to make the eyes red. Inflammations of the eye can also make them red giving a bloodshot appearance. It can even happen with people who wear contact lens for more than 16 hours without soaking it in the disinfectant. At times excessive dryness can make the eyes red. Some other reasons for the eye to become red include conjunctivitis, blepharitis, glaucoma and corneal ulcer. Another concerning reason of bloodshot eyes is a subconjunctival haemorrhage. While the latter is not dangerous in nature, it can cause significant trouble if proper care is not taken on time.

Symptoms of Red Eyes:

Some of the common signs of bloodshot eyes include watery eyes, foreign sensation, burning feeling, dermatitis, falling of eye lashes, light sensitivity, swollen eyelid, itching of the eye and feeling of irritation of the eye.

The Complications Involved:

In most of the cases, bloodshot eyes do not imply serious complications. In case it happens from conjunctivitis, a person may not be able to go to work, wear cosmetics and come in public places since it is a communicable disease. If bloodshot eyes arise from a serious condition such as glaucoma and trauma, some of the possible complications may involve the following:

Eye scarring

Vision loss due to complete blindness

Spreading of the existing condition to other persons

Eye loss in severe cases

Preventive Measures:

Bloodshot eyes might arise from an array of reasons. While it cannot be totally dodged, some general preventive measures can ensure that such a condition does not arise:

Keeping hands clean by thoroughly washing them with liquid soap

Not sharing personal belongings such as washcloths, linen, and cosmetics

Get immediate medical attention in case of any eye injuries

Stay away from an environment that is full of allergens

Staying away from people who are suffering from infectious eye diseases such as conjunctivitis

Taking a shower immediately after getting in touch with an infected person suffering from conjunctivitis

Wearing eye glasses in a dusty environment

Bloodshot Eyes - Causes, Symptoms and Complications

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:
1. Myopic astigmatism: When the principal meridians of the cornea are nearsighted.
2. Hyperopic astigmatism: When the principal meridians of the cornea are farsighted.
3. Mixed astigmatism: When one of the principal meridians is nearsighted and the other is farsighted.

It can also be classified in two other types:
1. Regular astigmatism: When the principal meridians are perpendicular to each other.
2. 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.

All About Astigmatism

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