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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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Meet Our Doctors
Dr. Melissa Farley


Dr. Melissa FarleyDr. Melissa Farley was born and raised in rural Wayne, West Virginia. Dr. Farley completed her undergraduate studies at Marshall University where she was the recipient of Marshall’s highest award – The John Marshall Scholarship. She graduated Magna Cum Laude with a Bachelor’s of Science Degree in Chemistry, in 2004. After graduation, she went on to pursue her optometry degree at Southern College of Optometry in Memphis, Tennessee. She had a great opportunity to fulfill her passion for missions with trips to Jamaica and the Dominican Republic with SVOSH (Student Volunteer Optometric Services to Humanity).

During her time at Southern College of Optometry, Dr. Farley completed externships at the Veterans Hospital in Memphis, the Eye Center at Southern College of Optometry, and in private practice where she had extensive experience working with cutting edge technology in eye care. Upon completion of her externships, she graduated with her Doctorate Degree with honors and was selected for the Beta Sigma Kappa Optometric Honor Society.

She has been in private practice in Southwest Virginia for the past 8 years. Dr. Farley has extensive experience in medical optometry providing a variety of services for her patients including vision correction, glaucoma treatment, macular degeneration management and genetic testing, foreign body removal, emergency medical treatment, dry eye management, surgical cataract and LASIK co-management, infant and pediatric examinations, and specialty contact lens fitting.

Dr. Farley loves working with children! Part of her clinical rotations and private practice experience has been evaluating and managing all types of infant and children's vision problems. She also participates in the InfantSee Program, which provides a free infant vision evaluation between the ages of six months and one year of age.

Dr. Farley is an active member in the American Optometric Association (AOA), Virginia Optometric Association (VOA), Fellowship of Christian Optometrists (FCO), and Volunteer Optometric Services to Humanity (VOSH). She also enjoys participating in local vision missions through Remote Area Medical.

She loves to spend time with her family, and enjoys being actively involved in church activities. She also loves camping, hiking, and anything outdoors.

Dr. Sarah Erwin


Dr. ErwinDr. Sarah Erwin was raised in Austinville, Virginia, along with three sisters and one brother.  Dr. Erwin completed her high school degree from Carroll County High School in 2007, graduating with honors.  She went on to pursue her Bachelor's of Science degree from Virginia Tech, majoring in Biology and graduating Summa Cum Laude in 2011.  After completing her undergraduate degree, Dr. Erwin attended the University of Alabama at Birmingham School of Optometry.  She had the terrific honor of joining the Beta Sigma Kappa International Optometric Honor Society.  Dr. Erwin graduated with honors and received her Doctor of Optometry degree in May 2015.

Dr. Erwin has completed externships at VisionAmerica in Birmingham, Alabama, Vistar Eye Center in Roanoke, Virginia, and a private practice in Hillsville, Virginia.  She has enjoyed gaining valuable experience diagnosing and treating many eye diseases by learning from intellegent clinicians.

Dr. Erwin is an active member in the American Optometric Association (AOA), the Virginia Optometric Association (VOA), and the American Academy of Optometry (AAO).  In the summer of 2015, Infinity Eye Care welcomed Dr. Erwin to Radford, Virginia.  She brings with her a wealth of knowledge and a delightful personality to all her patients. 

Dr. Erwin enjoys all aspects of patient care.  Her special interests include contact lenses, pediatrics, and ocular disease.  In her spare time she enjoys reading, hiking, and spending time with her husband, family, and friends.


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