People may have weak eyes due to a variety of reasons. Astigmatism happens to be one of those reasons. When one is affected by astigmatism, it results in blurry vision. The eye has a part called the cornea, which is the outermost layer of the eye and is responsible for allowing light to enter. When the cornea is not shaped as it should be, it leads to astigmatism.

However, this is not the only condition under which it can occur. In fact, there are two different types of astigmatism. One is corneal astigmatism which is the result of an odd-shaped cornea. The other is lenticular astigmatism, which occurs when the lens has an incorrect shape. More often than not, people are born with astigmatism. However, there are chances of developing this eye disorder after an eye injury or after an eye disease.

How to diagnose?
There are a few ways in which astigmatism can be diagnosed. 

One of the most popular methods is the visual acuity test. This measures the distance at which a letter is read clearly, as compared to what it should be. 
Another way is by refraction. By placing lenses in front of the eyes, the way they focus light is measured. 
The third way by which astigmatism can be detected is by keratometry, also known as topography. Light is focused on the cornea and the reflection is measured to find the curvature of that area.
Treatment options
The easiest way to go about treating astigmatism is by using corrective lenses. This is usually the method of treatment for people whose astigmatism is not that bad. The lenses could either be a part of spectacles or used as contact lenses. The good part about contact lenses is that the field of view is wider.

Orthokeratology (Ortho-k) works to improve astigmatism by using lenses as well. However, the lenses are of the hard variety. These lenses are useful for corneal astigmatism patients as they reshape the eye. Usually, they are worn while sleeping and most people can have normal vision the next day. However, if one stops using them, the eye goes back to its original state. So, they are not a permanent solution.

Surgery, however, can be a permanent solution to astigmatism. LASIK and PRK are two of the most popular types. RK is also popular, but to a lesser extent. It is good to remember that the risks of surgery should be discussed with a doctor prior to undergoing one.

Astigmatism - Ways They Can Be Diagnosed!

A red eye is one of the first and most common symptoms of conjunctivitis. Conjunctivitis is the inflammation of the tissue that lies over the white part of the eye and lines the inner side of the eyelid. It is usually the result of a viral infection and can easily spread from one person to another. Conjunctivitis can also be a symptom of STDs like Gonorrhea or Chlamydia. In newborns, conjunctivitis can be vision threatening, while in grownups it is not considered a serious health risk. The symptoms of conjunctivitis differ according to the cause of the infection. 

Some common symptoms of conjunctivitis are:
1. Green or white discharge from the eye
2. Redness of the white part of the eye
3. Inflammation of the eyelid
4. Waking up to crusted yellow discharge
5. Itchiness and burning in the eyes
6. Increased sensitivity to light
7. Blurred vision

An eye examination and testing a sample of the fluid secreted by the eye can be used to diagnose conjunctivitis.  It can easily be treated at home and does not require hospitalization. Antibiotics are often given in the form of eye drops and ointments to treat conjunctivitis. These usually need to be applied 3 to 4 times a day for a period of 5 to 6 days. Wash your eyes before putting the eye drops. Once applied, close your eyes and roll the eyeball around to distribute the medicine and keep it from overflowing out of the eye. Wash your hands immediately after applying the eye drops.

Viral conjunctivitis is highly contagious. If you are suffering from it, you should take a few days off work and restrict your social interactions. Wash your hands frequently as you may unconsciously rub your eyes. This is especially important with regards to meals and finger foods. Also, avoid sharing towels, pillowcases, etc. to minimize the transmission of the disease from one person to another.  

Avoid using makeup while being treated for conjunctivitis. With conjunctivitis, the eye is more sensitive to irritants and thus, a speck of makeup can worsen the situation. Also avoid contacts. If you wear contacts regularly, dispose the current set and start using a fresh set after your doctor gives you a clean chit. 
Artificial tears or non prescription eye drops can also be used to relieve the itchiness and burning in the infected eye. If only one eye had been affected by conjunctivitis, do not use the same eye drop bottle for both eyes.

Managing the Acute Red Eye

Are you losing your sight day by day? Does it make difficult to see you at night? Is this the onset of Blindness? Get to know about Retinitis Pigmentosa with these tips.

What actually is Retinitis Pigmentosa? 
Retinitis Pigmentosa (RP) refers to a group of diseases, which causes a slow, but progressive vision loss. It is a genetic disorder that affects the ability to respond to light.This inherited disease causes a slow loss of vision, beginning with decreased night vision and loss of peripheral (side) vision and eventually results in blindness.

Causes:
Retinitis pigmentosa is often hereditary (runs in families). If you or your partner has retinitis pigmentosa, there may be up to a 50 percent chance that you will pass it on to your children. Ask your ophthalmologist about genetic counseling if you are planning to have children.

Symptoms:
1. Slow loss of vision
2. Beginning of decreased night vision
3. Loss of peripheral vision
4. Difficulty in identifying colours

Diagnosis:
If you have poor night vision or a loss of side vision or if there is a history of retinitis pigmentosa in your family, your ophthalmologist will conduct a comprehensive eye exam to determine if you have retinitis pigmentosa. Your ophthalmologist will dilate your eyes to look at the back of them for signs of disease.

Treatment:
Currently there is no known cure for retinitis pigmentosa. However, research has shown that vitamin A palmitate may slow the progression of certain forms of RP. Your ophthalmologist can advise you about the risks and benefits of vitamin A palmitate and how much you can safely take. Taking too much vitamin A palmitate can be toxic, and evidence of vitamin A palmitate effect on RP progression is not substantial.
Another recommendation for slowing vision loss from RP is to wear sunglasses to protect your retina from harmful ultraviolet (UV) light.

Retinal prosthesis is also an important area of exploration because the prosthesis, a man-made device intended to replace a damaged body part, can be designed to take over the function of the lost photoreceptors by electrically stimulating the remaining healthy cells of the retina.

Retinitis Pigmentosa: What You Should Know About It?

Glaucoma is a group of diseases that causes damage to your eye's optic nerve and gets worse over time. The optic nerve is a bundle of millions of nerve fibres which carry visual impulse from the retina at the back of eye to the brain. The increased Eye pressure, called intraocular pressure, can damage the optic nerve and fasten the natural nerve fibre loss. Since nerve cells can't regenerate this damage is permanent and irreversible.

Without treatment, glaucoma can cause total permanent blindness within a few years. Because most people with glaucoma have no early symptoms or pain from this increased pressure, it is important to see your eye doctor regularly so that glaucoma can be diagnosed early and treated before significant functional visual loss occurs.

If you are over age 40 and have a family history of glaucoma, you should have a complete eye exam with an eye doctor every one to two years. If you have any risk factors, you may need to visit your eye doctor more frequently.

What Are the Symptoms of Glaucoma?

For most people, there are usually few or no symptoms of glaucoma. The first sign of glaucoma is often the loss of peripheral or side vision, which can go unnoticed until late in the disease. This is why glaucoma is often called the "Sneak Thief of Vision" or "Silent Thief of Eye Sight".

If you have any of the following symptoms, seek immediate medical care:

Seeing halos around lights
Vision loss
Redness in the eye
Eye that looks hazy (particularly in infants)
Nausea or vomiting
Pain in the eye
Narrowing of vision (tunnel vision)
Risk Factors

There are several risk factors, which may lead to glaucoma, such as

Age of the individual
Ethnicity- African, Caribbean, Hispanics and Asians are at higher risk
Increased eye pressure or IOP History of glaucoma in family or relatives
Presence of Myopia or Hyperopia
Previous eye injuries
Use of steroids- as injections, tablets, eye or ear drops or ointments or protein supplements for muscle building in gyms or inhalers
Previous history of anemia
Individuals conditions affecting blood flow like hypertension, diabetes or high blood sugar, migraine etc are also at risk.
Treatment-

The treatment for glaucoma relies on the nature and seriousness of every case. Generally, glaucoma cannot be totally cured, but it can be controlled. Eye drops, pills, laser strategies, and means of surgery are utilized to maintain and prevent further harm from happening. Talk to your eye doctor to find out if you are at risk of developing glaucoma.

Glaucoma - 7 Signs You Are Suffering From It!

Amblyopia is decreased vision in one or both eyes due to abnormal development of vision in infancy or childhood.It is commonly known as lazy eye, in which a child's vision does not develop properly, usually in one eye. If it is left untreated, a child's vision will never develop correctly in the affected eye.

What are the types of Amblyopia are there?
There are several different types and causes of Amblyopia, such as Strabismic Amblyopia, Deprivation Amblyopia and Refractive Amblyopia.
The end result of all forms of Amblyopia is reduced vision in the affected eye(eyes).

How does Lazy Eye occurs?
Lazy eye occurs when your brain favors one eye, often due to poor vision in your other eye. Eventually, your brain might ignore signals from your weak or lazy eye. The condition can result in vision impairment and loss of depth perception.

What are the Symptoms of Lazy Eye?
Lazy eye may be hard to detect until it becomes severe. Early warning signs include:
1. Tendency to bump into objects on one side
2. An eye that wanders inward or outward
3. Eyes that appear not to work together
4. Poor depth perception
5. Double vision
6. Squinting

What Causes Lazy Eye?
A number of conditions and factors can lead you to rely on one eye more than the other. These include:
1. Constant strabismus or turning of one eye
2. Genetics or a family history of lazy eye
3. Different levels of vision in each of your eyes
4. Damage to one of your eyes from trauma
5. Drooping eyelids
6. Vitamin A deficiency
7. Corneal ulcer or scar
8. Eye surgery
9. Vision impairment, such as nearsightedness, farsightedness, or astigmatism
10. Glaucoma, which is high pressure in your eye that can lead to vision problems and blindness

How is Amblyopia diagnosed?
When it first occurs, parents and children often don't notice the condition. It's important to get routine eye exams as an infant and child, even if you show no outward symptoms of eye problems.
Family history of amblyopia is a risk factor for the condition.

How Is Lazy Eye Treated?
Glasses/Contact Lenses
Eye Patch
Eye Drops
Surgery
Other treatments include:
Atropine penalization therapy (also used for maintenance)
Optical blurring through contact lenses or elevated bifocal segments

What Is Amblyopia? Are You or Your Child Suffering From It?

An eye allergy or allergic conjunctivitis is a condition that strikes when certain substances irritate the eyes, which can cause a reaction. This reaction has varied symptoms starting from inflammation to watering and even redness and an itching sensation. So how can you tell if you have an eye allergy? this article will tell you all you need to know!

Causes: to begin with, this is an immune response that happens when the eye comes in contact with substances like dirt, grime, pollutants, pollen, nettle, pet hair, smoke, mold and more, which may cause irritation. These are typically known as allergens. The immune system takes these allergens to be invaders and begins attacking the same by releasing chemicals that cause these allergic reactions. Also, an eye allergy may be a symptom or outcome of other conditions like asthma, hay fever, or even eczema.

Symptoms: the eye usually bears a pink or red appearance when the patient is suffering from an eye allergy. Also, watery eyes are a common sight during this condition while scaling around the eyes may also take place. Further, itching and burning sensation may be felt by the patient and swelling or puffiness can be seen. The symptoms may afflict one or both eyes. The patient may also have a runny nose or stuffy nose as well as nasal congestion.

Difference between eye allergy and pink eye: conjunctivitis or pink eye is usually caused due to bacteria or a virus that spreads infection in the eye. But eye allergy is caused due to a response of the immune system that leads to an allergic reaction. While the pink eye may be a contagious condition, an eye allergy is not.

Diagnosis: the diagnosis of an eye allergy will be done with the help of various tests conducted by an ophthalmologist. The skin prick test will help in introducing allergens to find out if the spot gets raised or suffers from inflammation. Also, the doctor will check for other ailments like asthma and eczema.

Treatment: there are varied methods of treating this condition. To begin with, the doctor may prescribe medication like decongestants and antihistamines as well as steroids for more severe and persistent cases. Also, injections may be prescribed in order to do away with the allergic reaction and eye drops containing olopatadine hydrochloride may also be used.

Home remedies: staying away from allergens and using a warm and clean washcloth over the eyes, for a few minutes every day, may help in relieving the painful symptoms of the condition.

Do not forget to consult your doctor before you try any natural or home based remedies.

Are You Suffering From Eye Allergy?

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