Let’s Talk about Light

Let’s Talk about Light | W. John Murrell, M.D. | Amarillo, TX Vision is the byproduct of light. Wavelengths of light enter the eye and stream to the retina, where a clear image is formed through the interpretation of light. In sunlight, there are wavelengths of violet, indigo, blue, green, yellow, orange, and red light. Interestingly enough, the joining of every one of these colors creates white light. While the full spectrum of wavelengths of light is necessary, there are also details about the light that should be known.

Light is energy. Therefore, every wavelength of light emits a certain amount of energy. Red light has longer wavelengths. Blue light has shorter wavelengths. The shorter the wavelength, the higher energy emission is from that light. So, blue light has some of the highest energy output on the spectrum.

Are You Being Exposed?

Other than the blue light that is present in natural sunlight, there are other sources that have become increasingly common in recent years. Some of the primary ways that we are exposed to blue light today include:

  • LED television screens
  • LED light bulbs
  • Compact fluorescent light (CFL) light bulbs
  • Digital devices (smart phones, computer screens, tablets, etc.)

Yikes! That’s a lot of blue light exposure!

Why it Matters

Blue light in sunlight is good for health. It boosts alertness and has historically been a prime factor in healthy circadian rhythm, or sleep cycle. When there is too little exposure to natural sunlight and its full spectrum of colors, including blue light, children may not develop optimal eye health or vision. When too much blue light exposure takes place, though, sleep cycles are disrupted, sometimes dramatically. Because research suggests that children absorb more blue light through the eyes than adults, exposure becomes a very real concern.

Exposure to excessive blue light can lead to digital eye strain. This condition may manifest as dry eyes or a sense of tiredness and irritation. Consequently, digital eye strain may cause a person to have difficulty focusing. This is frustrating but maybe not all that concerning. What is concerning is the high likelihood of retinal damage caused by blue light. When exposure occurs continually over time, the risk of age-related macular degeneration increases substantially.

Protecting your Eyes

In addition to seeing your eye doctor on a regular basis, you can support eye health by limiting screen time. If you work on a computer, you may add a filter to your monitor to reduce blue light. Computer glasses with a yellow tint may also be worn, or lenses with anti-reflective coating.

Is it time to check your eye health? Call (806) 351-1177

Contact Us For All Your Health Related Queries!

Panhandle Eye Group Subspecialists

7411 Wallace Blvd
Amarillo, TX 79106

Amarillo Cataract & Eye Surgery Center

7310 Fleming Ave
Amarillo, TX 79106

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We offer earlier morning appointment starting at 7:40am for those who choose to come in at an earlier convince. Our phone hours are as posted.

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There is an upcoming solar eclipse that is taking place on April 8th.


We recommend that viewers do not look directly at the sun when outside and that eye protection must be worn at all times.


This is the latest IOL for Dr. Murrell's cataract practice. The LAL is the first IOL that can be adjusted after the surgery. Dr. Murrell can customize your IOL so that you can have the vision that you desire.

The LAL is a premium IOL which will not be covered under your medical insurance hence will have to pay for this IOL.


What's coming to Dr. Murrell's practice in the next few months.
Embrace with Accutite and Facetite and Morpheus Prime and Morpheus8

Accutite and Facetite: - These are FDA approved cosmetic devices that can melt fat and mildly tighten skin. It requires only a small opening in the skin. The Accutite is for small areas such as the upper and lower eyelids. The Facetite is for the larger areas of the face such as the jowls, neck, and nasolabial folds.

Morpheus Prime and Morpheus 8 - These are FDA approved cosmetic devices that are applied to the skin to tighten the skin and collagen underneath the skin. The Morpheus Prime is for smaller areas smaller areas such as the upper and lower eyelids. the Morpheus8 is for the larger areas of the face. Both Morpheus Prime and Morpheus 8 takes 3 treatments spaced 4 weeks apart from each other.

The Accutite and Morpheus Prime can both be performed to the eyelids to maximize the cosmetic effect. Likewise, the Facetite and Morpheus8 can both be performed to maximize the cosmetic effect.

The Embrace is the device that rungs the Accutite, Facetite, Morpheus8, and Morpheus Prime. These treatments are not covered by insurance. The patient will have to pay for the procedure.

What's New in Dr. Murrell Practice in 2023

Light adjustable IOl (LAL) for Cataract Patients

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