The quality and sharpness of vision are generally measured with a Snellen chart. The Snellen chart shows letters of logically smaller size. Perfect vision is 20/20. This implies the patient or subject sees the same line of letters at twenty feet that a typical individual sees at twenty feet.

Here are a few doctor recommended tips that can be followed in order to achieve a perfect vision. These are as follows:

1. Eat right for good vision
Taking good care of your eyes begins with the food that you eat. Foods, for example, fatty acids, lutein, zinc and vitamins C and E may avert age related vision and eyesight problems, for example, macular degeneration and cataract as shown by certain studies. Eating these foods daily can lead to healthy eyesight. Following are some of the nutrients that can help us do so:

    Green vegetables, for example, spinach, kale, and collards
    Salmon and fish
    Eggs, nuts, beans, and other non-meat protein sources
    Oranges and different citrus natural products or juices
    Shellfish and pork

2. Quit smoking
Smoking makes you more inclined to get cataract, optic nerve damage and macular degeneration. The more times you attempt to stop smoking, the more probable you are to succeed.

3. Wear shades
The right sort of shades will shield your eyes from the sun's bright (UV) beams. An excess of UV exposure makes you more inclined to get cataracts and macular degeneration. Pick shades that piece ninety nine to hundred percent of both UVA and UVB beams. Wraparound lenses shield your eyes from the side. Spellbound lenses diminish the glare when driving. Some of the contact lenses come with UV protection as well. It is still a smart thought to wear shades for more protection, however.

4. Turn away From the Computer Screen
Gazing at a computer screen for a really long time can bring about eye strain, foggy vision, trouble focusing at a distance, dry eyes. The muscles around the eyes can start getting weak and painful if given too much strain. Turn down the screen brightness. You need to at present have the capacity to see, however, you should not feel like you are gazing at a very bright light. In case you are reading from the computer, use the zoom capacity to make the content bigger.

5. Pencil exercise
Take a pencil, and place it some place in the centre. Draw a letter, number or dot in on any side of the pencil. For this activity, you will concentrate on the pencil and the spot as you move it toward and far from your eyes. Pencil push-ups are rumoured to correct twofold vision and crossed eyes, yet it cannot hurt to attempt them for different issues since it is free, easy, and just includes focusing and refocusing your eyes. 

How to Have the Perfect Vision? Doctor Recommended Tips

5 myths about eye health and the real facts behind them

Your eyes are an important part of your health. There are many things you can do to keep them healthy and make sure you are seeing your best. However, there are a number of myths regarding what you should do and what you shouldn't do when it comes to maintaining good eye health.

Here are 5 of those myths busted:

Myth #1: reading in dim light and sitting too close to the tv hurts your eyes

Fact: sitting too close to the tv, you may feel eye strain or get a headache from reading in the dark, but it will not weaken your eyes. It fatigues your eyes but does not harm your eye health in any way.

Myth #2: eating carrots will improve your vision

Fact: carrots are rich in vitamin a, a nutrient essential for good vision. But eating carrots will only provide a small amount of vitamin a. To get the optimum amount, you need to include other sources of vitamin a in your diet as well, some of which are milk, cheese, egg yolk and liver. Spinach is best for eye health. It has lutein and zeaxanthin, both of which can help prevent cataracts.

Myth #3: if you wear glasses or contacts for a continuous period, your eyes will weaken

Fact: your eyes will not grow weaker by using corrective lenses. The prescription may change over time due to aging or absence of disease but it has nothing to do with your current prescription. Some children have correctable eye problems that do require glasses to improve the condition.

Myth #4: when you get something in your eye, rub it out

Fact: this is not true for everything that gets in your eyes. If any particle falls in your eyes dust it off. But if it is sand and small debris that gets in your eye, don't touch it. Use an eye wash for flushing it out. If an object gets stuck in your eye, don't remove it or rub your eye constantly. Visit a doctor at the earliest because some serious injuries may seem minor at first.

Myth #5: dark sunglasses can protect your eyes from the sun

Fact: the color of sunglass does not ensure eye protection. Look for sunglasses that block both uva and UVB rays. Exposure to the UV-rays of sunlight can have cumulative effects on your eyes. It increases your risk for cataracts, solar retinitis, and age-related vision loss. Even if your contacts have UV protection, wear sunglasses that block 100% of uva and UVB rays for full protection.

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Related Tip: Here's What CRYING Does to Your Body

Sitting Too Close To TV Will Weaken Your Eyes? FALSE.

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

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!

Amblyopia is commonly known as'lazy eye. It is a vision development disorder, which affects eyes and the brain during infancy and childhood. It signifies that the eye does not achieve a normal visual acuity even with refractive correction in form of glasses or contact lens. During normal visual development, the eye and brain learns to'see' and develop binocularity, that is the ability to perceive depth (stereoacuity). This occurs in the first 8 to 10 years of life. 

Each eye transmits a clear and identical image from retina to the brain, which fuses the two images into a single image with 3 dimensions (adding depth). When the image is formed on the retina of two eyes is too dissimilar, the brain cannot fuse the two images and suppresses the more blurred image. As a result, the worse eye does not learn to'see' and becomes'lazy. This condition is seen in 1-4% of population.

The common causes for dissimilar images or amblyopia are:
1. Misalignment of the eyes or squint: it is the primary reason for amblyopia is misalignment of the eyes. In case, both your eyes are not aimed in the same direction, the image captured by each eye is different, resulting in diplopia. The brain will see from the dominant eye and suppress image from the other eye. Over a prolonged period of time, the eye dissociates from the visual cortex of the brain.

2. Refractive amblyopia:
A. Unequal refractive error in both eye. When the eye power of both eyes differ by more than 1.5d of spherical equivalent, which results in dissimilar images between the two eyes. As a result, the visual development in restricted in the worse eye.
B. High refractive error or astigmatism in both eyes, since there is a blurred image in both eyes, the normal vision development does not occur in either eyes resulting in bilateral lazy eyes.

3. Cloudiness in visual system or visual deprivation amblyopia: any kind of obstruction or cloudiness in the normal visual axis of the eye tissues can lead to amblyopia. Disorder of any kind, which blocks a clear image from being focused blocks the formation of a clear image on your retina. Commonly due to congenital or developmental cataracts or corneal opacities or prolonged closure of one eye in early childhood (drooping of one eyelid, eyelid swelling, patching of one eye).

Treatment for amblyopia
For treatment of amblyopia, a child must be compelled to utilize his affected, weaker eye. This can be done by correction of causative factor such as, treating refractive error with glasses, surgical correction of misalignment of eyes followed by patching and vision therapy, cataract surgery.

Patching or occlusion of the good eye
This is done to force the brain to pay attention to visual input from the worse eye. This allows nerve connections between affected eye and brain to develop due to, which the eye'learns to see. Eye drops such as atropine are also used for blurring the vision of the good eye. Some form of vision therapy may also be required to train both eyes to see together and develop some degree of depth perception.

To be effective, treatment should be implement as early as possible, within the period of normal visual development best within first 8 years of life. Some visual gain has been seen in selected patients up to age of 14 to 18 years. This also highlights the importance of a comprehensive eye examination as a routine in young children.

About Amblyopia or Lazy Eye

Glaucoma is a type of eye disease in which the optic nerve of the eyes get damage. The problem gets worse over time and leads to a condition where a person is not able to see, thus blindness.

Glaucoma can also cause due to the pressure buildup inside the eyes. This buildup of pressure is known as intraocular pressure which leads to damage the optic nerve. The optic nerve of the eyes is responsible for transmitting images formed on the retina to the brain. Due to the damage of this optic nerve, people suffering from Glaucoma may lose their vision completely and permanently.

Glaucoma is one main leading cause of blindness all over the world. For treating Glaucoma, there are many options and surgical methods are available. However, Ayurveda is one of the most effective methods to cure this problem naturally and completely.

Symptoms

The problem usually does not show any early symptoms. However, some of the common symptoms that may occur due to Glaucoma are:

Seeing halos around lights

Red eyes

Vision loss

Lazy eyes

Nausea

Vomiting

Eye pain

Narrowed vision

Ayurvedic Treatment of Glaucoma

Ayurveda is known for its wisdom in treating body ailments in the most natural and effective way. Ayurveda seems to have a cure for every ailment and this is true for Glaucoma. There are many herbs and therapies available which help in relaxing the pain, reduce the redness, drain the deposited fluid, improves vision, etc.

According to Ayurveda, any problem is caused due to the disturbance of balance in the doshas. It says that the disturbance of Kapha dosha may lead to Glaucoma.

Among various herbs used in Ayurvedic treatment, some of the herbs used in Ayurveda to treat Glaucoma are:

Punarnava (Boerhavia diffusa): It is one of the leading herbs used to cure the Glaucoma. It has the diuretic properties which help in controlling the disease by draining the excess fluid from the eyes. It also prevents the damage of optic nerve and reduces intraocular pressure.

Triphala: Triphala is another herb used in Ayurveda to treat this problem. It is usually used as an eyewash. It also reduces intraocular pressure and prevents vision loss. The herb also possesses anti-inflammatory properties that protect the optic nerve from damage.

Amla (Phyllanthus emblica): It is also a beneficial herb that manages and treats Glaucoma. It contains Vitamin C and has antioxidant properties protecting the ocular tissue, optic nerve, and retina.

Take Away

Ayurveda is one of the most effective ways to treat Glaucoma. However, it is always advisable to consult an Ayurvedic specialist before going for any of these herbs. Some lifestyle changes and exercises along with Ayurvedic treatment will help a person to gain better result.

Glaucoma - How Can Ayurveda Avert It?

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