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Latest Vision News

Block the Blue Light

The truth is, blue light isn’t all bad. It shouldn’t be blocked at all times. It can help memory, boost alertness, and elevate your mood! Still, the eye cannot take blue light all day long and it can easily contribute to eye strain especially when it is coming from computer screens and tablets and cellphones.

These days, we’re working, learning, and relaxing in front of screens emitting blue light all throughout the day—and night. Even your average indoor lightbulb can give off blue light.

You’re probably wondering. Okay, but what is blue light anyway?

Blue light is the highest energy visible light on the UV spectrum, and before the advent of technology, the sun was our only significant source of blue light. Problems arise, however, with the amount of blue light to which we are exposing our brains and bodies, potentially causing undue stress to our eyes and even making it hard to sleep at night.

There are a few ways to avoid this strain. First, let us introduce you to one of the best options on the list: blue light blocking lenses.

What are blue light blocking lenses?

Good question. Glasses equipped with lenses with blue light protection are a simple solution to combat the symptoms caused by increased screen time. The technology in these lenses has a subtle tint that softens harsh blue light rays as they pass through, reducing the amount of blue light to which the wearer’s eyes are exposed. They aren’t heavy or thick and can be made without a prescription attached to them. They can be made to fit adults, teens and children and are safe for all to wear. All blue light blocking glasses aren’t made the same. They can be made to block a certain percentage of blue light. How much you decide to block, well, that is up to you. Give our practice a call and we will gladly talk you through your options!

What else can I do to block blue light?

While you won’t be able to block it without the correct lens as your shield, you can still manage it.

When working at a computer, for example, you’re often looking up and down, from screen to paper, and your eyes are moving around and refocusing time after time. This is where the 20-20-20 rule can come into play. For every 20 minutes you’re in front of a screen, turn your head and look at something at least 20 feet away for 20 seconds. Just, give your eyes a break.

Another option: simply lower the brightness. The display settings for your screen on your phone or computer allow you to adjust the amount of light seeping from the screen. If your screen looks like a light source, lower the brightness. If your screen looks dull and a bit too dark, it’s okay and probably for the best to brighten it up. A dull screen can also strain your eyes.

Bottom line, protect your eyes the best way you can and remember that we are here to help! Looking to get a pair of blue light protection glasses that fit your lifestyle and your budget? Here at Infinity Eye Care, we can customize any style of frame and lens prescription with blue light-blocking technology.

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We commonly see patients who come in saying that their eye is bleeding.

The patients are usually referring to the white part of their eye, which has turned bright red. The conjunctiva is the outermost layer of the eye and contains very fine blood vessels.  If one of these blood vessels breaks, then the blood spreads out underneath the conjunctiva. This is called a subconjunctival hemorrhage.

A subconjunctival hemorrhage doesn't cause any eye pain or affect your vision in any way. Most of the time, a subconjunctival hemorrhage is asymptomatic.  It is only noticed when looking at the mirror or when someone else notices the redness of the eye.  There should not be any discharge or crusting of your lashes.  If any of these symptoms are present, then you may have another eye condition that may need treatment.  

What causes a subconjunctival hemorrhage?  The most common cause is a spontaneous rupture of a blood vessel.  Sometimes vigorous coughing, sneezing, or bearing down can break a blood vessel.  Eye trauma and eye surgery are other causes of subconjunctival hemorrhage.  Aspirin and anticoagulant medication may make patients more susceptible to a subconjunctival hemorrhage but there is usually no need to stop these medications.  

There is no treatment needed for subconjunctival hemorrhage.  Sometimes there may be mild irritation and artificial tears can be used.  The redness usually increases in size in the first 24 hours and then will slowly get smaller and fade in color.  It often takes one to two weeks for the subconjunctival hemorrhage to be absorbed.  The larger the size of the hemorrhage then the longer it takes for it to fade.

Having a subconjunctival hemorrhage may be scary initially but it will get better in a couple of weeks without any treatment. However, redness in the eye can have other causes, and you should call your eye doctor, particularly if you have discharge from the eye.

Article contributed by Dr. Jane Pan

 

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