People may suffer from visual impairment even though their eyes are perfectly normal. Such loss of vision may result from neurological impairment.

Vision is the combination of image formation and perception of various attributes of the image by the brain. When the brain is not able to perceive images or various attributes of images, the patient may suffer from neurological impairment of vision. Such impairment owes its origin to the nervous system.

Causes of Visual Impairment:

There are various areas in the brain that process some or the other attribute of the image that has formed on the retina. Occipital cortex, the area situated at the rear side of the brain is a very important site. It is responsible for processing visual stimuli and allowing people to make an idea about shape, distance, movement, color, etc. The severity of loss of vision depends on the extent and location of damage in the brain.

Neurological loss of vision may result from acquired brain injury, difficulties with visual perception, impairment in coordination of the eyes, etc. All these may stem from damage areas in the brain that are responsible for vision. There are many areas in the brain that are responsible for vision.

These areas can get damaged from various accidents like:

Stroke: If a person suffers a stroke, a part of his or her brain is likely to get damaged due to a haemorrhage or a blocked blood vessel.

Traumatic Brain Injury: A traumatic brain injury such as in a car accident or a violent fall can damage visual perception of the brain.

Infections: Infections such as meningitis attack the brain and may impair various areas of it.

Lack of Oxygen: People may suffer from lack of oxygen if they experience accidents like a near-drowning episode or a heart attack or something else, which has the effect of interrupting blood flow to the brain.

Diseases: Diseases such as brain tumors, multiple sclerosis etc. can precipitate neurological vision loss.

Symptoms of Visual Impairment:

Symptoms of neurological vision loss depend on the type of vision impairment and the location of damage in the brain. It may include:

Blurry vision: In Blurry vision, a person will not see things clearly or may see something in light but find it difficult to see them in dim light.

Double vision: In double vision, the patient sees a single object as two and cannot merge them as one.

Problems with depth perception of objects

Problem with bright light: In this type of problem, a person experiences difficulty seeing an object in a bright light. One may also feel pain or discomfort in the eye in bright light.

Difficulty with interpreting the object the person is looking at

Partial loss in the visual field: In this problem, half of the visual field in each eye is missing.

Treatment of Visual Impairment:

There is hardly any treatment for such vision loss since the rectification of visual acuity is of no help. Depending on the location and degree of neurological impairment, vision may improve over time. Some children with acquired brain injury or impairment in the coordination of the eyes and difficulties with visual perception also tend to improve with age.

Conclusion:

This is a type of vision loss where glasses, contact lenses, surgeries, or eye drops are not going to help. Such vision loss is usually permanent. Children with similar symptoms need to be presented with pictures, bright light, etc., which may help to form an idea about the object.

Visual Impairment Related To Nervous System!

Eye allergy or allergic conjunctivitis is an eye disorder where inflammation of the conjunctiva in the eyes takes place. Eye allergies are different from contagious or bacterial conjunctivitis. Eye allergies are more likely to occur during the hot, summer season. Homeopathy medicines offer excellent treatment for eye allergies. Below listed are some homeopathic medicines, which cure eye allergies, along with the symptoms when they are prescribed.

Natural Homeopathic Remedies for Eye Allergies
Apis Mel: Apis Mel treats eye allergies characterized by a burning and stinging sensation in the eyes. Oedema accumulates around the eyes, and the eyelids become swollen and puffy. The watery discharge comes out of the eyes.
Euphrasia: This is an effective homeopathic medicine for treating eye allergies where there is an acrid discharge from the eyes. The discharge is acidic and burns the skin that comes in contact with the same. Burning pain in the eyes is indicated. The eyes become watery.
Argentum Nitricum: Argentum Nitricum is an effective homeopathic medicine used in case of eye allergies with an abundant, purulent discharge. The patient develops photophobia, and splinter like pain in the eyes is experienced. The conjunctiva swells.
Ruta: This is a fine homeopathic medicine for treating eye allergies where there is a sensation of the presence of a foreign body in the eyes. Indicated by severe eye irritation, the patient feels something like a dust particle is stuck in his eyes. The eyes become red and painful.
Pulsatilla: Pulsatilla is used when there is relief due to the application of cold water. Symptoms include discharge of a thick, yellow fluid from the eyes. Itching and burning are caused. The eyelids feel agglutinated.
Natural Home Remedies for Eye Allergies
Eye allergies problem can be treated with homeopathic medicines, these are home remedies are easily available and does not offer side effect to your precious eyes. Check out some natural home remedies used for eye problems such as allergies, redness, dryness, and Stinging problem:

Cold compress: Application of cold compress around the allergy affected area provides relief. Soak a cloth in cold water and apply it gently to the affected area. Chamomile tea bags can be used as a cold compress.
Cucumber: You can place round slices of cucumber over the allergy affected area on the eyes to get relief. Cucumbers contain anti-irritation properties, which help to reduce puffiness, swelling, and irritation in the eyes.
Rosewater: Rosewater is an effective natural remedy for eye allergies. It soothes and cools the eyes, and makes the eyes clear. Rosewater can be used as an eye drop.
Green tea: Green tea is completely natural and gives relief to eye allergies. It soothes the eyes and is anti-inflammatory in nature.
Eye allergies are common and affect people during summer the most. They may reoccur every year. Homeopathic and natural treatment methods for eye allergies are very efficient treatment procedures.

Eye Allergies - 5 Homeopathic Remedies For It

Cataract can be defined as the clouding of the natural lenses in the eyes. This is caused by the clumping of protein in the eye lens. Cataract is a common eye disorder and the leading cause of loss of vision in people who are past their fortieth birthday. Cataract can occur in one or both eyes. When diagnosed properly, cataract can be treated with surgery to prevent blindness.

Depending on where and how they develop, there are many types of cataract. The most common amongst these are:

1.        Subcapsular cataract

These occur at the back of the eye lens. Diabetic patients are very susceptible to this kind of cataract.

2.        Nuclear cataract

Yellowish-brown cataract that form in the center of the lens are called nuclear cataract. This is usually seen in cataract caused by ageing.

3.        Cortical cataract

Cataract in the lens cortex are known as cortical cataract. These are wedge shaped and whitish in color. Spokes protruding out of these opaque wedges can be seen moving towards the center of the eye.

4.        Congenital cataract

Though they are not common, babies can also have cataract. Cataract formed at birth or within the first year of a baby's birth are known as congenital cataract.

5.        Secondary cataract

Cataract is one of the known side effects of diabetes and glaucoma. Some steroids and medicines are also linked to cataract.

6.        Traumatic cataract

If your vision becomes cloudy years after an eye injury, it could be a traumatic cataract. It can take several years for this to happen.

7.        Radiation cataract

Exposure to radiation can also lead to cataract. This is seen sometimes in patients who have undergone radiation therapy to fight diseases like cancer.

Though the type of cataract might differ from person to person, the symptoms are usually the same. Some of the common symptoms of cataract are:

1. Blurred vision
2. Reduced night vision
3. Increased sensitivity to light and glare
4. Seeing halos around lights
5. Colors appearing faded
6. Double vision

A reading test is the first step towards diagnosing cataracts. This is followed by tests to measure the eye pressure. Your doctor will also need to dilate the pupil to check the condition of the optic nerves and retina.

Surgery is the safest way to remove a cataract. Surgery is usually recommended when cataract begin inhibiting your daily life such as preventing you from driving, interfering with reading etc.
 
In most cases, this can be done as an outpatient procedure. The earlier it is diagnosed, the easier it is to treat. Hence, if you notice any of the symptoms mentioned above, get your eyes checked at once. The surgery is a day-care surgery only, so a person can go home the same day.

Is Your Vision Clouded? It Could Be Cataracts

Eye twitching, tics in the eyelids and spasms in the eye are pretty common. In case of eye twitching, usually the lower eyelid becomes involved. The upper eyelid may also twitch in certain cases. Twitches are not permanent in nature, and they leave after some time. In some cases, eye twitching may last for long durations of time such as weeks or months.

Eye twitching is not a critical medical condition. It is a temporary prickling and irritation in the eyes, which ceases after some time. Common twitching of the eyes is not related to any neurological disorder.

Here are some reasons which cause eye twitches-

Stress
Every individual goes through some amount of stress, and the body reacts differently in different people as a result of stress. An eye twitch may be caused due to stress, especially related to strain in the eyes.
In order to reduce stress you should practice yoga, meditation, perform breathing exercises and take a break. Reducing the stress would also cease the twitching in the eyes.

Tiredness
Eye twitching can appear when you are fatigued or very tired. Lack of proper sleep makes your body tired, and this might trigger eye twitching.
You should improve upon your sleeping hours and sleep more.

Eye strain
Vision problems and any issue related to the eyes can cause stress, which may result in constant twitching in your eyes. Whenever too much stress is imposed upon your eyes, they tend to react and twitching occurs. Any problem would make the eyes put in more effort, which results in strain.
You should have an eye check up if you experience an eye strain accompanied by twitching sensation in your eyes.

People who use computers, laptops, tablets and smartphones for a profuse period of time experience pain and twitching in the eyes. There is a 20-20-20 rule to be followed while using such devices, which reduces eye strain and reduces itching or twitching. You can also avail special eyeglasses for people who spend a lot of time on computers.

Caffeine
Intake of an excess amount of caffeine leads to eye twitching. Cut down your doses of coffee, tea, dark chocolates and soft drinks in case of eye twitching and you may observe an easing in the twitching.

Alcohol
Alcohol also leads to eye twitching so you must abstain from alcohol in case you are having twitching in the eyes.

Dry eyes
This disorder develops in people who have crossed the age of 50. People who use computers a lot also develop dry eyes, which leads to eye twitching.

Our eyes twitch because of a lot of reasons. You should know the facts right and avoid situations that lead to eye twitching.

Why Our Eyes Twitch?

During summer you try to take special care about the overall health of your body, particularly, your eyes. Eyes are one of the most important organs of the body, and the scorching summer heat can cause serious eye problems like conjunctivitis, infections, red eye, migraines etc., which is why it's important to take proper care of eyes during the summer season.

Here are some tips to keep your eyes cool and protected during the summer:

- Wearing sunglasses is very important when you are outdoors as it protects your eyes from the harmful UVA and UVB light. This will help in avoiding migraines and even serious conditions like cataract.
- Avoid midday sunshine. Stay indoors as much as possible during the middle of the day to avoid the sunshine then when the effect of the sun and ultraviolet radiation exposure are at their peak.
- When you plan to go for a swim, make sure you wear your swimming goggles. Otherwise you might catch conjunctivitis.
- You should not splash water into the eyes directly unless any foreign particles such as dust enter your eyes. This might damage the tear film of the eye, which protects your eyes.
- You need to maintain proper hygiene by washing your hands and face properly as soon as you reach home so that dust or grime does not enter the eyes as their entry can result in allergies and infections.
- You can keep a slice of cucumber on each of your eyes to relax and cool them down.
- 6 to 8 hours of sleep are a must as they help in revitalizing your eyes.
- Adding green vegetables, carrots, nuts, liver and fruits to your diet would be very beneficial for the health of your eyes.



8 Tips to Keep Your Eyes Cool in Summers

Blurred vision is most often a sign that you need corrective spectacles for near sightedness, far sightedness or astigmatism but it could also be a sign of a bigger problem including eye diseases or neurological problems. Blurred vision involves the loss of sharpness of vision and objects appearing hazy and out of focus. It can affect one eye or both eyes simultaneously.

Whatever be your age, it is a good idea to consult a doctor as you begin to experience a blurred vision. To measure the extent of your vision problem, a doctor will do a comprehensive eye examination including spatial contrast sensitivity and a standard eye chart test. Some of the factors that trigger blurred vision are:

1. Myopia or nearsightedness
2. Hypermetropia or farsightedness
3. Astigmatism caused by an irregularly shaped cornea
4. Presbyopia - the diminished ability to focus on objects due to the hardening of the lens in the eye
5. Dry eyes or the lack of lubrication on the surface of the eyes
6. Hormonal changes during pregnancy
7. Migraine headaches
8. Temporary floaters in the eye formed by the liquefying of the gel in the eyes
9. After effects of lasik surgery
10. Eye drops or medication
11. Overuse of contact lenses
12. Diabetes

Blurred vision can also be a symptom of a serious condition such as cataract, glaucoma, macular degeneration, diabetic retinopathy and cardiovascular diseases.

Treatment for blurred vision depends on the factors triggering it. Wearing corrective glasses can cure blurred vision caused by myopia, hypermetropia and astigmatism. These conditions can also be treated by lasik surgery. For blurred vision related to diabetes, check your blood sugar and get it into its optimal range.

Exercises for the eye muscles can also help sharpen vision and lower the rate of eye muscle degeneration. Some of these exercises are:

1. Alternately focus on an object close to you and another far from you for ten seconds each.
2. Blink your eyes and hold for two seconds
3. Roll your eyes clockwise and anticlockwise. Repeat 15-20 times.
4. Rub your palms together to generate heat and place over your eyes to relax them.

A healthy diet with plenty of vitamin a can help keep your eyes healthy and prevent blurring of vision. Wearing sunglasses can also protect your eyes from harmful uv radiation and lower their rate of wear and tear. Lastly avoid reading in moving vehicles and holding a book too close to your face.

Is Your Vision Blurry? What Should You Do?

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