People are well aware of the harmful effects that UV rays have on the skin, but very few know that UV rays can damage their eyes as well. The tissue that human eye is made up of is one of the most sensitive tissues in the body and hence, the most vulnerable. The increasing level of UV radiation reaching the Earth s surface every minute has made it indispensable to take the required precautionary measures to protect the eyes.

What are UV rays?

Sunlight consists of 3 types of radiations - Infrared, Visible light and UltraViolet. Artificial sources like lasers, tanning beds and welding machines also emit UV radiation.

There are three types of UV radiations - UV-A, UV-B and UV-C. 

UV-C is absorbed by the ozone layer and does not possess any risk. It is UV-A and UV-B radiations that adversely affect the eyes and vision.

Impact of UV rays on  eyes

Too much exposure to UV rays can affect vision, harm the eyes, and deteriorate overall eye health. There are various eye problems that are aggravated by excessive exposure to UV radiation:

Macular Degeneration: It is caused by damage to the retina over time by UV rays. It leads to age-related blindness. Too much exposure to UV rays increases the risk of developing macular degeneration.
Cataract: It is the clouding of eye s natural lens - the part of the eye that focuses the light we see. Too much exposure to UV rays increases the risk of developing cataracts. 
Pterygium: Often known as  surfer s eye , pterygium is a pink, non-cancerous growth that is formed on the conjunctiva. UV rays are believed to be responsible for the development of this growth.
Skin Cancer of the Eyelids: Too much exposure to UV rays can cause skin cancer in and around the eyelids.
Photokeratitis: Popularly known as corneal sunburn or  snow blindness , photokeratitis is caused due to excessive short-term exposure to UV-B rays. Photokeratitis occurs when you spend long hours at the beach or skiing. It sometimes leads to temporary vision loss. 
How to protect the eyes from harmful UV rays?

Here are some tips to help ensure that eyes are protected against harmful UV rays:

Always use quality sunglasses that block out 99-100 percent of both UV-A and UV-B radiation when outdoors.
Stay away from tanning beds, and if you use them occasionally, always wear eye protection. 
Wrap around frames should be used if you spend a lot of time outdoors.
Be sure to see your doctor at least every two years.

UV Rays - Are They Damaging Your Eyes?

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

4 tips for a great eyesight

An important organ of the body, eyes must never be taken for granted and need to be protected at all times. In addition to protecting them, you also need to improve as well as maintain their overall health.

Here are some of the ways of keeping your vision in top form:

1. Eat for good eye vision

To have healthy eyes and consequently good vision, you need to have foods that keep them in good health. Nutrients like Zinc, vitamins C and E, and Omega-3 Fatty Acids can help to fend off age-related sight problems such as cataracts or macular degeneration (a condition characterized by the deterioration of the middle portion of the retina). Foods like eggs, nuts, green leafy vegetables, oranges and citrus fruits are what you need to have to get good eye health. 

2. Kick the Smoke habit

Smoking can adversely affect your eye health and can make you prone to eye conditions like cataracts, macular degeneration and damage of optic nerve (a nerve that transmits impulses from the eyes to the brain). By kicking this habit, you end up saving your eyes from irreversible damage.

3. Use sunglasses

Exposure to the Sun's ultraviolet rays for a long period of time can make you prone to common eye problems including cataracts. To protect them from the Sun's harmful rays, you need to use sunglasses that block 99-100% of Ultraviolet A (UVA) and Ultraviolet B (UVB) rays.

4. Go for a regular eye checkup

Going for regular eye examinations can help in protecting your vision and ensure you see clearly. Eye examinations are important to help you find eye problems like glaucoma (a condition wherein the optic nerve is damaged, resulting in vision loss). A comprehensive eye examination can help in identifying problems like nearsightedness, farsightedness or astigmatism (an eye defect that occurs to a deviated spherical curvature).




4 Tips for a Great Eyesight

Did you know that your vision is responsible for around 80% of you sensory input? your eyes are among the most delicate organs in your body. Long work hours in front of the computer and long study hours results in tired and sometimes irritating eye conditions. But help isn't too far. Before you head to the doctor, you can head to your kitchen to look for solutions. There are several home remedies that you can try to not only improve your eyesight but also get rid of glasses and rebuild your vision! here's how you can do it:

1. Exercise: Just like any other body part, your eyes need exercise too. Blinking your eyes rapidly for 5 seconds helps moisturize it. Similarly, cupping your eyes with you palms for 4-5 minutes triggers acupuncture points that helps the eye to relax. There are specific exercises to reduce eye strain, improve blurred vision and enhance reading. Do these as per the specific problem you are facing.

2. Take a break: Follow the 10-10-10 rule when you are on the computer for extended hours. For every half hour of work, take a 10 min break to look at something n a distance at least 10 feet away for 10 seconds. These becomes tricky if you are studying or working in a fast paced environment and easily forget to take breaks. Set alarms that help you know the time so that you can actively plan your breaks. To enhance break time, try to look at greenery during your 10 sec break which helps the eyes relax better. Splash your eyes with cold water to give them a fresh feel.

3. Yoga: Yoga and meditation relaxes your body and mind. It is also a great way to relax your eyes as you get to close them and give them rest. When you close your eyes, you shut out a big chunk of sensory inputs helping your body go from an active reaction mode to a passive action mode.

4. Eat for your eyes: Make sure you add your weekly quota of vision enhancing food in you diet. Carrots which are rich in beta-carotene and vitamin a are great for the eyes. Similarly grapes and blueberries work great to improve your night vision. Green leafy veggies, garlic, shallots, eggs and onion all contribute in keeping your eyes healthy and strong. Cold water fish rich in DHA is an another great food that helps reduce dry eyes and muscular degeneration.

5. Change your lifestyle: Other than exercise and proper nutrients, you need to ensure you get a shut eye for six to eight hours every day to let your eyes fully rest and rejuvenate. As always drink 6 - 8 glasses of water. And don't forget to get regular eye check ups especially if you are a diabetic or have other health conditions that adversely affect your eyes.

Natural Remedies For Better Eyesight

The ability to see is one of our greatest powers and it needs to be valued and looked after. Sometimes this involves wearing glasses to improve our vision. Spectacles not only help us see better but also prevent straining and further deterioration of the eye muscles. Here are a few signs to watch out for that will indicate your need for spectacles. Keep in mind however that a comprehensive eye exam is the only way to determine the power required for your spectacles. 

-  Blurred vision
Blurred vision or the inability to focus on something in the distance is one of the first signs or eye deterioration. When it comes to children, watch out for complaints of inability to read the writing on class blackboards.

-  Frequent headaches
Unexplained headaches that come and go could be a sign that you need glasses. These headaches can usually be felt at the end of a long day or after watching television. 

-  Constant squinting
Squinting is a natural way to improve vision. This is because the act of squinting reduces extra light and light scattering thus allowing us to see something clearer. Thus, if you notice yourself squinting more than usual it is time to schedule an eye exam.

-  Difficulty working on a computer
Struggling to read figures and words on a computer screen is usually a sign of poor vision. Try adjusting your screen angle and the distance of the screen from your eyes to see if your vision improves or worsens. 


-  Difficulty adjusting to lights
Sudden increased sensitivity to lights can be a sign of many eye disorders with vision problems being the most common. 


-  Eye strain
Occasional pain in the eyes after a long day or as a result of an allergic reaction is nothing to worry about. However, if this pain persists for a few days, it could be an indication that you need spectacles. 
Deterioration of vision is usually a very gradual process and so you may not realize when it begins. However, the earlier you start wearing corrective glasses to improve your vision the easier it will be to control the deterioration of the eye muscles and you may even be able to rectify your condition completely. So, do not ignore any of these warning signs. Even if you do not have any of these symptoms, it is a good idea to get a thorough eye examination at least once a year.

Common Signs You Need Glasses

Cataract is generally associated with old age. However, in some unfortunate cases, children could be affected by cataract as well. A cataract can be defined as a cloudy or opaque layer that forms on the eye's natural lens that lies behind the iris and the pupil, leading to eventual loss in vision. Cataract can affect children in one eye or both eyes.

Cataract can be a congenital birth defect or can develop as the child grows older. The latter case is known as pediatric cataracts. The exact cause of cataracts in children is not known, but it has been associated with a number of genetic disorders, low birth weight and infections during pregnancy. Traumatic events such as an injury to the eye can also cause cataracts.

The earlier a cataract is diagnosed and treated, the better it is. It is easier to identify a cataract that affects both eyes than a cataract that affects only one eye. If a congenital cataract is not treated in time, the part of the baby's brain used for sight may not develop properly. Hence it is crucial to recognize cataract symptoms.

Here are a few you should look out for:

    Not looking directly or responding to large, colourful objects.
    Not being able to find small objects while crawling.
    Excessive squinting or shielding their eyes to bright sunlight.
    Eyes that do not focus on the same point.
    White reflex instead of a red reflex in photographs.
    Uncontrolled movement of the eye.

Cataracts that are too small to affect sight can be treated with eye drops to dilate the pupil. However, this provides only temporary relief. Surgery is the most preferred form of cataract treatment. This surgery can be performed even in the first few weeks of a baby's life. The child is put under anesthesia and a microsurgical instrument is used to break the lens into small pieces and remove it.

This surgery is followed by the use of lenses or glasses to help the eye regain its power to focus again. In some cases, the lens may be implanted to replace the natural lens. In cases where cataract affects only one eye or one eye is more severely affected than the other, there may be a tendency to develop amblyopia or lazy eye syndrome. In such cases, it becomes necessary to patch the good eye shut and stimulate vision in the eye that has undergone surgery.

Cataract in Children

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