Glaucoma is a serious eye condition in which the optic nerve gets damaged and the situation gets worse over time. If untreated, individuals may go permanently blind. Most individuals, with glaucoma, have no previous symptoms or warning signs of this disorder and this is the reason why it is important to have regular eye check-ups.

Causes of glaucoma
Eyes have a liquid called aqueous humor. This fluid flows out of the eyes through mesh like channels for proper lubrication of the eye. However, there can be situations in which these channels may get blocked. In such a case, there would be a build-up of this liquid, thereby causing an increase in fluid pressure. This is usually a major cause of glaucoma. Although there has been no elaborate evidence of what exactly causes this blockage, doctors have noticed that this can be inherited.

Other less common causes include:

Any sort of blunt injury or chemical injury to the eye
Blocking of blood vessels inside the eye
Other inflammatory conditions
Improper eye surgery
Types of glaucoma
There are mainly two kinds of glaucoma than can occur:

Open-angle glaucoma: This is the most common kind of glaucoma and is also called wide-angled glaucoma. In this kind, the tubular meshwork through which the liquid flow occurs is normal. However, the fluid flow isn t the way it should be.
Angle-closure glaucoma: This is also known as acute glaucoma or chronic angle closure. In this case, the liquid is not able to drain properly because of the angle between the iris and the cornea being too narrow, thus causing the iris to be in the way. This can cause a sudden build-up of pressure, thereby leading to chronic glaucoma.
Facts about glaucoma

This disorder usually has no previous signs or symptoms and occurs all of a sudden.
This disorder mainly affects individuals above 40 years of age.
Glaucoma can be inherited.
People with diabetes have chances of suffering from glaucoma.
If not treated early, it may lead to permanent blindness.
Symptoms of glaucoma
Usually there aren t many symptoms to warn people about this disorder. However, one of the first signs is definitely losing peripheral or side vision. Other symptoms might include

Chronic vision loss
Visibility of halo around lights
Narrowed vision
Glaucoma is treated by any of the three methods:

Prescription eye drops in order to reduce eye fluid formation, thereby resulting in outflow increase
Laser surgery
Microsurgery

Glaucoma - A Complete Guide on It!

Eyeglasses and contact lenses are both used for vision correction. Both of the options have their advantages and disadvantages but a number of factors like lifestyle, comfort and age etc. are important while deciding which one to choose. Here is a list of the fundamental differences between using spectacles and using contact lenses:

1. Distance from the cornea
Lenses are worn directly on the eye and are in constant physical contact with the cornea while glasses are worn over the eyes. Contact lenses may cause infections in the eye because the user has to touch the eye in order to wear them and to take them off.

2. Difference in vision
Since the lenses of spectacles are a little distance away from the eye, vision can be slightly distorted but contact lenses can provide natural and accurate vision. Also, side vision is not improved by glasses as you have to turn your head to see what is beside you. The contacts move around with your eyeballs and the peripheral vision is in focus.

3. Ease of use
Some people find eyeglasses difficult to use because of the constant weight on the face and the obstruction caused by the frames of the glasses. There may also be a constant need to adjust the frames. Often eyeglasses slip down the nose when you sweat or engage in rigorous physical activity. Contact lenses are free from all these hassles - they are not distracting or obstructive and so they are extensively used by dancers and athletes. Spectacles is very uncomfortable to wear during the rains or in humid weather because they fog up.

4. Infections and complications
Contact lenses can get displaced inside the eye and they can be difficult to reposition. They also cause the eyes to itch and water if you wear them for a very long time at a stretch or if tiny dust particles enter your eyes. The use of eyeglasses is far more flexible in this respect - they can be removed in case your eye itches or burns, but regular use of glasses causes dark circles and bags under the eyes.

5. Aesthetic differences
People often prefer contact lenses as they do not change the physical appearance - they help you look natural and you can also use colored lenses to change the color of your eyes. Glasses may look slightly unnatural but some people also prefer them for the fashion quotient.

Lens Vs Specs

Eye allergy or allergic conjunctivitis is an adverse immune response of the body that occurs when it comes across an irritating substance or allergens like smoke, dust or pollen. The body assumes these to be harmful substances and releases chemicals called histamine to fight against them.

Symptoms of an eye allergy-

Allergy in the eyes causes the occurrence of certain symptoms-

  Itching in the eyes

  The sensation of burning in the eyes

  Redness

  Watery discharge

  Swollen eyelids

  Light sensitive

What triggers it?

An eye allergy is usually triggered by the following components-

  Pollen

  Dander

  Dust Mites

  Mould

  Pet Dander

  Exhaust from vehicles

What to do if you suffer from eye allergy-

  Consult an eye specialist or allergist - It is important to consult a physician since the symptoms may pertain to other allergies like asthma or eczema that have different treatment.

  Take proper medication - Take the prescribed eye drops, oral histamines or decongestants to alleviate the symptoms.

  Avoid the allergen - It is difficult to do so if the allergies are seasonal, that means if the eye allergies always occur during specific seasons of the year. If they are not seasonal, you can avoid the allergens if you

Keep the doors and windows closed at home and while riding the car
Take a shower or change your clothes after coming back home from outside
Wear an allergy-relief mask while outside to filter the smoke, dust, etc.
Wear glasses to protect eyes from the allergens
Wash hands after petting any animal
Use a dehumidifier to protect against mould
  Take allergy shots - These are good precautionary measures for seasonal allergies. These increase the tolerance for the irritants. Similarly some eyedrops can be given to decrease the frequency, severity and intensity of allergy episodes.

  Natural remedies - If nothing else works you can use a cold compress to relieve the itchy eyes. Eat walnuts, fish oil and flaxseed oil that contain Omega- 3 fatty acids to reduce inflammatory substances in the body.

What not to do if you are having an eye allergy-

  Avoid rubbing your eyes; that will further irritate your eyes and damaged the eye surface

  Do not keep your indoor surroundings dirty and dusty

  Do not dry-sweep the floors

  Do not pet any animal if you are allergic to animal dander

There is no permanent cure for eye allergies yet but the proper treatment and precautions can help to reduce many of the symptoms. Over-the-counter medications may work out for some people but others may require severe treatment. Remember in spite of prophylactic or therapeutic treatment if u are exposed to a high load of allergens, you will develop symptoms of allergies but they will be milder than if u had no prophylaxis.

Eye Allergies - What To Do & What Not To Do?

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

In order to see clearly, the eyes need to be constantly lubricated. This function is performed by small glands located in the eyelids known as meibomian glands. These glands secrete oil onto the surface of the cornea through tiny openings on them. Malfunctioning of this gland can create an excessive amount of oil.

When oil accumulates on the eyelids, it encourages the bacteria present in the eye and the skin around it to multiply leading to inflammation. This condition is known as meibomianitis. Adults are at a higher risk of suffering from this condition as compared to children.

Some of the factors that could trigger meibomianitis are:

Allergic reactions
Fluctuation of hormones associated with puberty and adolescence
Acne and other skin conditions
Lice or mites on the eyelashes
Unsanitary contact lens solution
Contaminated eye makeup
Certain medications such as isotretinoin for acne that increases bacteria on the eyelids
However, in some cases, a clear trigger factor may not be identifiable.
Some of the characteristic symptoms of this disease are:

Dry eyes
Constant watering from the eyes
Inflammation and reddening of the eyelids
Burning sensation in the eyes
Itchiness
Flaking of skin around the infected eye
Heightened sensitivity to light
Excessive blinking
Crusting of eyelashes
Blurred vision
Frequent formation of sties
Loss of eyelashes or abnormal growth of eyelashes
Regular cleaning of the eyes with warm water and abstaining from the use of contact lenses and eye makeup can help reduce irritation and manage the inflammation. Additionally, the doctor may also prescribe antibiotics or steroids in the form of pills, eye creams or drops. Artificial tears may also be recommended to patients exhibiting dry eye symptoms.

Meibomianitis - 8 Things That Can Trigger It!

Ever noticed spots or strands that  float  into your line of vision. These are known as floaters. In most cases, they do not affect your vision, but can cause a lot of discomfort. Thus, in most cases they do not require treatment unless they affect your vision significantly. Floaters are more likely to stand out when looking at bright objects or something like a clear blue sky. Moving your eyes can shift the fluid in your eyes and move these floaters out of your line of sight.

Dust particles entering and irritating the eye should not be confused with floaters. Floaters can be described as flecks of a protein called collagen. These flecks can be seen when they are loosened from the back of the eye known as the vitreous. This can happen at any age but is more likely to affect people between the ages of 50 and 75. Being near sighted or suffering from cataract also increases your risk of seeing floaters. In rare cases, it can also be triggered by a disease in the eye, an injury to the eye, tumors or crystal deposits in the back of the eye.

Noticing the odd floater is not something to worry about. However, if you notice a sudden increase in the number and frequency of floaters in your eye, see flashes of light, have pain in the eyes or experience a loss of side vision, consult a doctor immediately. This could also be a sign of a more serious condition like a detached retina that requires immediate medical attention. Excessive floaters can be removed through a surgery known as a vitrectomy or laser vitreolysis. A vitrectomy involves the removal of vitreous gel from the middle of the eye and replacing it with silicone oil or a gas bubble. The surgery last 2 or 3 hours, but you may require an overnight stay in the hospital.

Laser vitreolysis is a more recent form of treatment for this condition. This pain free procedure involves the projection of a laser beam into the eye that focuses on large floaters to break them apart or vaporize them. This procedure can be performed as an outpatient and is considered safer than a vitrectomy. The form of treatment suited to a person will depend on a number of factors including their age, what the floaters look like, where they are located and the frequency of their appearance.

Eye Floaters - When Should You Consult A Doctor?

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