Night blindness is also called nyctalopia.It's a type of vision impairment. People with night blindness experience poor vision at night or in dimly lit environments. It is not a disease in itself, but rather a symptom of an underlying problem, usually a retina problem.

What Causes Night Blindness?
A number of eye conditions can cause night blindness, including:
1. Nearsightedness or blurred vision when looking at faraway objects.
2. Cataracts or clouding of the eye's lens.
3. Retinitis pigmentosa, which occurs when dark pigment collects in your retina and creates tunnel vision.
4. Vitamin A Deficiency
5. Zinc Deficiency
6. Dry Eyes
7. Diabetes

Are the Symptoms of Night Blindness?
The sole symptom of night blindness is difficulty seeing in the dark. You're more likely to experience night blindness when your eyes transition from a bright environment to an area of low light, such as when you leave a sunny sidewalk to enter a dimly lit restaurant. You're likely to experience poor vision when driving due to the intermittent brightness of headlights and streetlights on the road.

How can I Prevent Night Blindness?
You can't prevent night blindness that's the result of birth defects or genetic conditions, such as Usher syndrome. You can, however, properly monitor your blood sugar level and eat a balanced diet to make night blindness less likely. 

Orange colored foods are excellent sources of vitamin A, including:
1. Cantaloupes
2. Sweet potatoes
3. Carrots
4. Pumpkins
5. Butternut squash
6. Mangoes

What are the Treatment Options for Night Blindness?
The treatment will depend on its causes.
1. Nutrient deficiency (Vitamin A and Zinc) is the easiest to treat. 
2. If the cause is cataract, you can go for cataract surgery to remove the clouded lens and replace it with artificial intraocular lens. Vision is usually dramatically improved after surgery. 
3. For dry eye syndrome, lubricate your eyes with artificial tear drops as they provide instant relief. Just make sure that they are without preservatives. 
4. Diabetic retinopathy can be prevented with tight control over blood sugar, active lifestyle and good dietary habits.
5. As for retinitis pigmentosa, unfortunately there are no treatments available. Thankfully, new research is showing that vitamin A might have a slowing effect on the progression of this eye disease.

Night Blindness: Causes and Symptoms

The eye is a complex organ. It is made up of a number of different parts which together build a sense of image. Retina is a very significant part of the eye. It is this part of the eye that helps it project the image. The object image is ultimately created on this part of the eye. But it is also a very sensitive and delicate organ. There are many abnormalities that may affect the retina. Central Serous Retinopathy is one such abnormality.

This medical condition of the eye is precipitated when there is a buildup of fluid behind the retina. This leads to the detachment of the retina. The patient may experience gradual or even sudden loss of vision as the central retina gets detached.

The Retina and its Structure

The retina is a very important part of the eyes. It is a membranous structure where vision takes shape and is composed of several layers. It contains special photoreceptor cells that help in identifying color, vision, etc. There are different cells that help in central as well as peripheral vision. The central region of the retina is also known as macula. Retinal Detachment is a disorder of retina that can turn people blind or low in vision. Medical intervention is necessary to regain lost vision.

Symptoms of Central Serous Retinopathy

Patients need to be aware of the symptoms lest they should be caught completely unaware of it.

Objects may appear farther away than usual.

White portions of images may appear dull and lines may appear crooked.

Patients may experience blurry vision in the initial stages.

However, it does not always a precipitate symptom. If fluid buildup is not affecting the central vision area, the patient may not experience any deterioration in central vision. This is a perception that the central part is responsible for the central vision. He or she may experience a clear central vision, although there is a fluid buildup. Nevertheless, it may eventually push the central part and detach the retina resulting in Central Serous Retinopathy. Patients may experience a darkening or blurring of their central vision. This is usually limited to one eye. However, one may experience such problems in both eyes at different stages of life.

Risk factors

Though the contributory factors are not well known, it is thought that stressful lifestyles and some medicines can contribute to such ailments.

Treatment

Treatment may not always be required in all cases. Doctors may just ensure that built-up fluid is draining out. However, if fluid is not draining out, medical intervention is necessary doctors may go for treatments like photodynamic therapy, thermal laser treatment, or medications. Doctors may also recommend stopping steroids and bringing in lifestyle changes.

Conclusion:

People who notice any changes in their vision or experience pain or blurry vision should consult an Ophthalmologist as soon as possible. If a person is already suffering from any eye disease and experiences such symptoms, he/she should immediately seek medical attention without waiting for his/her next appointment.

In some cases, the fluid dissolves itself with no further medical treatment. However, if it does not, a variety of medicines and medical treatments are available.

Central Serous Retinopathy - What Should You Know?

If your eyes suddenly look reddish and feel extremely itchy, you may be suffering from allergic conjunctivitis. Allergic conjunctivitis is triggered by exposure to allergens like pollen or mold spores. An allergy to eye drops or contact lens solution can also trigger this condition. Allergic conjunctivitis is a very common health condition and more common during the hay fever season.

There are two types of allergic conjunctivitis; acute allergic conjunctivitis and chronic allergic conjunctivitis. Acute allergic conjunctivitis is characterized by the swelling of eyelids and intense itchiness and burning. Amongst the two, this is a more common condition. Chronic allergic conjunctivitis can occur during any season and has symptoms that come and go. It is a milder response to allergens such as dust, food, pollen, chemical scents etc.

On presenting the symptoms of conjunctivitis to a doctor, he may ask for an allergy skin test, a blood test or a scraping of the conjunctival tissue to understand the type of conjunctivitis you are suffering from. Allergic conjunctivitis can be treated with a combination of medication and home care.

Antihistamines are the most common form of treatment for this disease. This can reduce and block the release of histamines in the body. Artificial eye drops may also be used to create a screen over the eye and prevent the eye from coming in contact with the allergen. Eye drops may also be used to shrink swollen blood vessels in the eye. Steroid eye drops may also be used along with anti inflammatory eye drops.

Home care to treat allergic conjunctivitis focuses on preventing the trigger. Today, apps on your phone can update you n the pollen levels in the air. Close your windows every time you notice a higher than normal pollen count and keep your home as dust free as possible. You could also use an air purifier in your home. Also, avoid exposure to strong chemicals, dyes, perfumes etc.

To avoid the condition from worsening, avoid rubbing your eyes and wash your hands every time you touch your eyes. Disinfect your towels, sheets and pillowcases that come in contact with your eyes every few days with hot water. Wash eyes with cold water twice daily especially after coming home from outside. Do not share your make up or brushes with other people. This is a healthy habit to follow even when you are not suffering from this condition. While you suffer from pink eye you should also not wear contact lenses. Once the eye has healed, discard the old lenses and replace them with a new pair.

Allergic Conjunctivitis - How It Can Be Treated?

7 Easy ways to get relief from computer eye strain

Do you spend long hours in front of the computer? If you do, you may be experiencing eye strain on a regular basis. Eye strain is a common problem and is characterised by fatigue, decreased productivity, red eyes and eye twitching. You can get rid of eye strain by making use of any one of these simple tips. 

1. Ensure that your workplace has correct lighting
Often eye strain occurs as a result of improper lighting. This can be caused by exposure to bright sunlight coming in from the windows and doors or excessively dazzling indoor lights. You can avoid extra lights by keeping blinds or shades closed and by avoiding high-intensity bulbs or fluorescent lights. Alternatively, opting for incandescent or halogen lighting can be beneficial.

2. Minimise glare
You can install an anti-glare screen on the monitor of your computer to minimise glare. Keep the windows covered to reduce glare caused by outdoor sources.

3. Modify the display settings of your computer
You can modify the display settings of your computer in the following manner to reduce eye strain:
• Brightness-Set the brightness of the display to a level, which equals the brightness of your workplace.
• Text size and contrast-Modify the text size and contrast according to the comfort level of your eyes. For most people, black text colour on a white background ensures minimum eye strain and maximum convenience.
• Colour temperature- The spectrum of visible light, which a colour display usually emits is its colour temperature. Blue light is considered to cause more eye strain. So, you should decrease the colour temperature to minimize the amount of blue light emitted by your computer’s display.

4. Try some eye exercises
You can practise some easy eye exercises to prevent your eyes from getting tired. Try staring at a distant object for 10-15 seconds and then looking at any nearby object for another 10-15 seconds. Return your gaze to the first object. Repeat 10 times.

5. Opt for some computer eyewear while working
Try wearing a pair of computer glasses while working. They ensure that your eyes remain correctly focussed on the computer screen, while reducing strain to a minimum. Computer glasses also prove to be very effective in diminishing glare. 

6. Take short breaks at regular intervals
Apply the 20-20 rule to your work regime. After each 20 minutes of work on the computer, give your eyes a 20 second break by looking away from the screen towards any object located 20 feet away from you.

7. Go for a comprehensive eye exam
Make sure that you go for a comprehensive eye exam every year to reduce vision problems caused by computers. This will also help in detecting the root cause behind your problem, so that you can effectively employ curative or preventive measures to control eye strain.

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7 Easy Ways to Get Relief from EveryDay Computer Eye Strain

Eye Strain is an umbrella term that denotes a number of symptoms that relate to the extended use of eyes as well as discomfort that may come from excessive smartphone and computer use. This condition may or may not lead to significant eye damage and is usually characterised by blurry vision, headaches and a feeling of dryness in the eye as you blink less which creates less tears. This may happen due to the extended use of the eye when you are following objects on a screen or staring at a screen for too long. So, is eye strain the cause of your headaches? 

Find out more in this article.

Causes: Eye Strain or Asthenopia is caused by concentrating on visually intense tasks like reading from texts that have a fine print, the use of computers and other screens for prolonged periods, and trying to focus on objects in the dark. This can lead to distress of the muscles in this area which can also cause eye strain leading to a variety of symptoms including double imagery and even headaches and mild migraine like conditions.

Eye Muscle Imbalance: When there is eye strain which leads to headaches, it can also give rise to eye muscle imbalance which makes it difficult to concentrate with both eyes at the same time. In such cases, one may need bifocal glasses so as to fix the issue and prevent such debilitating headaches to remain on a persistent basis.

Diagnosis: Digital eye fatigue and ocular eye strain leading to headaches can be diagnosed by a doctor with the help of regular eye examinations. In any case, one should have the eyes checked at least once a year. This is especially important if your job involves sitting in front of the computer screen for prolonged hours.

Symptoms: There are a variety of symptoms of these headaches that are caused by eye strain. Apart from blurry vision which does not allow the patient to see properly and clearly without glasses, it can also cause headaches with symptoms like nausea and sensitivity to light. Retinal or eye migraines do not necessarily have to come with headaches, but the pressure can be painful enough.

Treatment: To begin with, the best form of treatment for headaches born from eye strain includes prevention which can be done by getting plenty of rest and sleep even as we limit the hours spent in front of the screen. One can also lower the resolution of the screen and make it more ambient. Also, the screen should be placed at a considerable distance from the eyes. The doctor can also prescribe glasses and eye drops for better eye lubrication.

Headache - Can Eyestrain Be the Reason Behind it?

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?

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