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March 2018

High Index – The Camouflage Lens

Earlier, there were times, when thick glass wearers were teased by friends and subordinates. The thick spectacle lenses were uncomfortable to wear and being mostly in glass had a complaint of breakage. There was no concept of high Index lenses and the users felt very uncomfortable in wearing thicker glasses in earlier times. People who had such high prescriptions could not follow fashion trends. However, today lightweight eye lenses are available for people who need correction in their vision with high powers.

Refraction corrects most vision defects. When a refraction is done, light is bent as it passes through a lens. The more the light is bent, the stronger is the prescription. More light is bent if the prescription is higher but in case of high refractive index lenses, light refracted is more efficient than in case of traditional lenses. With the material being more efficient, less material is required to make a corrective lens.

Today with the technology changing, different materials are available to ensure comfortable vision. Thin lenses are now manufactured using different available materials. There is high refractive Plastic and glass material with good optical quality with Plastic material having advantage of lighter weight compared to glass. With a 1.6 or 1.7 Index, there is less curvature on the frame leading to a thinner lens. Plastic Lenses have various indices available with 1.6 Index spectacle lenses being most used. Whenever the manufacturer uses high index material for lenses, it’s density increases and lesser material is used to make lenses thereby making it thin. A lens with high Refractive Index is relatively thin. High power prescription are the ones where the user needs to use High Refractive Index for their spectacle lenses. Some lenses are used even for high Plus powers where a thinner centre helps in reducing the weight and thickness of the lens. Aspheric lenses are used for Plus power lenses. Most aspheric lenses are made in high index material.

However, these lenses are very reflective and cause problems for drivers. Some countries also do not allow its drivers to drive without antireflection lenses especially if they are using lenses with high Indices. Antireflection lenses reduce light reflection and help in ensuring the same of the driver while driving and improve the vision. They have a downside to them as well as they are more expensive and prone to scratches. A superior scratch resistant coating is required on the lenses to prevent scratches.

Most people who use high index lenses suffer from myopia. The lenses become thin when the refractive index used is high. Today, Ultra High Index lenses are used to high myopes. Users with prescriptions like +11.00/-11.00 can make use of these Ultra high index lenses for a thin and flat eyeglass. The cost of these is a lot more though. 1.9 Index Glass lenses along with 1.74 Plastic lenses are the thinnest index lenses. They are available at the lowest possible prices online.

Some Interesting Eye Care Tips

We all know that eyes are very important for us but why do we tend to take them for granted. We have been to busy taking care of our skin, hair, and other parts of our body but we have put aside eye care most of the time.

The most common problems we have encountered with eye care are usually crow’s feet and dark circles. These eye problems can easily be remedied. In my research I have found the following eye care tips that I found to be quite helpful. Hope these tips can also help you.

Tips on Eye Care

Tip 1 – Enough Rest

The most used part of our body is the eyes. Have you noticed that you get migraines from driving especially during the night when you encounter bright lights from other cars? I usually have them. I found out that well rested eyes would mean lesser migraines. Rest is one important role in taking care of your eyes.

Tip 2 – Proper Diet

Fruits and vegetables are a great diet in taking care of your eyes. Usually yellow fruits and vegetables are the best ones. These fruits and vegetables are very rich in beta carotene. Papaya, mangoes, squash, and even spinach can be a great source of beta carotene. These types of food can help improve and maintain good health for your eyes.

Tip 3 – Drink Lots of Water

The skin around our eyes is very thin and underneath it is full of blood vessels. Drinking lots of water can prevent puffiness around our eyes. Do you know why our eyes become puffy at times? Our body has defense mechanism that every time we are dehydrated our body retains some water thus resulting to puffiness. Drinking eight or more glasses of water a day can help detoxify our body.

Tip 4 – Eye Exercise

Yes! There is also some form of exercise for the eyes. Exercising your eyes can supply enough oxygen and can make them function much better. I even find these exercises relaxing. I find time in between work to close my eyes for 30 seconds then I move my eyeballs around. I move my eyeballs from left to right and then up and down. Another exercise I would perform to prevent blurred vision is to hold a pencil at arms length and slowly bring it in towards my nose. Be sure to keep your eyes focused on the pencil.

Tip 5 – Avoid Excessive Rubbing

Our eyes are one of the most sensitive parts of our body. The best thing you should do in taking care of your eyes is to avoid rubbing them. This action will only make your eyes more irritated. The best thing you should do is to blink them. If some alien matter comes into your eyes, it is best to wash them with milk. Milk is a natural cleanser that will not cause further irritation in your eyes.

Tip 6 – Use Sunglasses

During sunny days I make sure that I wear sunglasses when I venture out in the daylight. This will help shield my eyes from the harmful rays of the sun. While you are resting it help to put cucumber slices or tea bags under your eyes. These can prevent dark circles and wrinkles from appearing around your eyes.

I hope that the eye care tips I have shared with you can really help you. Truthfully, I find these eye care tips very handy.

Eye Health – Keep an Eye on It

Everyone is becoming more health conscious by engaging in exercise and proper nutrition. But one area that we often lack motivation is caring for our eyes. Our eyes are one of the most important sensory organs we depend on our eyes to see the world. So we must ensure they are properly maintained and protected against disease. Here are some tips to help keep your eyes healthy.

Prevent straining your eyes.
Computers have taken over the world. Some people are spending up to eight hours or more a day in front of a computer either at work, or playing video games. But what steps do we take to secure and strengthen our eyes. The strain upon our eyes subtly creeps up and it can become difficult to read the small print. Regular eye test should be a part of our overall plan to keep our eyes in focus.

Wear Sun Glasses.
Outdoor activities during hot days is something everyone enjoys but the problem is we do not always think about the damage the suns UV rays have on our eyes. The use of sunglasses can help prevent cataracts and macular degeneration. Make sure that your sunglasses that have 100% UV protection.

Take Vitamin A supplements or foods high in vitamin A such as fruits or vegetables which can help greatly in the prevention of eye disease. Or maybe you could make a fresh fruit or vegetable juice to make it a bit more enjoyable.

Quit Smoking
Anyone now who still smokes does so knowing full well that it kill you but also smoking is directly related to loss of vision. Cataracts and macular degeneration are two main diseases caused by smoking.

Keep Active and have a healthy diet.
Exercising Eating lots fruits and vegetables and other healthy foods, will decrease your risk of developing eye disease. Exercise improves the circulation strengthens your overall health and if your body is healthy than your eyes will be to.

As we discover new ways to improve our overall health, eye health is just as important and should not be forgotten.If you ever find yourself squinting or experience blurry vision make an appointment with your ophthalmologist. Early diagnosis and treatment will improve your chances greatly.