Expert Q&A for How to Reduce iPhone Eye Strain

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Should I see a doctor if I'm always squinting because lights are too bright?

Kerry Assil, MD
Board Certified Ophthalmologist
Dr. Kerry Assil is a board certified Ophthalmologist and the Medical Director and CEO of Assil Eye Institute (AEI), an ophthalmology practice in Los Angeles, California. With over 25 years of experience and as one of the world's foremost experts in eye surgery, Dr. Assil has trained 14,000+ physicians in refractive and cataract surgery, performed 70,000+ eye surgeries, and authored over 100 textbooks, chapters, and articles on refractive and cataract surgery. He's served as the Distinguished Professor lecturer at Harvard, Johns Hopkins, Duke, Baylor, Tokyo, and UCLA among others. He has served on the advisory boards of 20+ ophthalmic device, pharmaceutical, and scientific companies and has appeared in the media as an authority on advances in vision-restoring surgeries and refractive surgery. Dr. Assil continues to make significant advances in his field with numerous inventions and introductions of state-of-the-art technologies.

Kerry Assil, MD

Board Certified Ophthalmologist

Expert Answer

Yes. If you're always squinting, it may be a sign that there's something wrong with your eyes. It could be an allergy, mild condition, or inflammation of some kind. It may not be a huge deal, but it's worth looking into.

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Why does squinting make it easier to see?

Kerry Assil, MD
Board Certified Ophthalmologist
Dr. Kerry Assil is a board certified Ophthalmologist and the Medical Director and CEO of Assil Eye Institute (AEI), an ophthalmology practice in Los Angeles, California. With over 25 years of experience and as one of the world's foremost experts in eye surgery, Dr. Assil has trained 14,000+ physicians in refractive and cataract surgery, performed 70,000+ eye surgeries, and authored over 100 textbooks, chapters, and articles on refractive and cataract surgery. He's served as the Distinguished Professor lecturer at Harvard, Johns Hopkins, Duke, Baylor, Tokyo, and UCLA among others. He has served on the advisory boards of 20+ ophthalmic device, pharmaceutical, and scientific companies and has appeared in the media as an authority on advances in vision-restoring surgeries and refractive surgery. Dr. Assil continues to make significant advances in his field with numerous inventions and introductions of state-of-the-art technologies.

Kerry Assil, MD

Board Certified Ophthalmologist

Expert Answer

When you squint to see clearly, you're creating an artificial pinhole effect by shuttering your pupils. It's kind of like decreasing the F-stop of a camera to increase its depth of focus.

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Is squinting a sign that I need glasses?

Kerry Assil, MD
Board Certified Ophthalmologist
Dr. Kerry Assil is a board certified Ophthalmologist and the Medical Director and CEO of Assil Eye Institute (AEI), an ophthalmology practice in Los Angeles, California. With over 25 years of experience and as one of the world's foremost experts in eye surgery, Dr. Assil has trained 14,000+ physicians in refractive and cataract surgery, performed 70,000+ eye surgeries, and authored over 100 textbooks, chapters, and articles on refractive and cataract surgery. He's served as the Distinguished Professor lecturer at Harvard, Johns Hopkins, Duke, Baylor, Tokyo, and UCLA among others. He has served on the advisory boards of 20+ ophthalmic device, pharmaceutical, and scientific companies and has appeared in the media as an authority on advances in vision-restoring surgeries and refractive surgery. Dr. Assil continues to make significant advances in his field with numerous inventions and introductions of state-of-the-art technologies.

Kerry Assil, MD

Board Certified Ophthalmologist

Expert Answer

If you find yourself squinting in normal light conditions just to see better, it could be a sign that you need glasses (or better glasses if you already wear them).

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Question

Why does looking at my phone cause my eyes to hurt?

Kara Hartl, MD, FACS
Board Certified Ophthalmologist
Dr. Kara Hartl is a board certified Ophthalmologist and the Founder and CEO of Mountain View Eye Center in Fairbanks, Alaska. Dr. Hartl is a blue light expert and specializes in studying the effects of natural and artificial light on people’s eyes and bodies. She received a BA in Biology from Harvard University and earned her Doctor of Medicine (MD) from The University of California-San Diego Medical School. Dr. Hartl also trained at the world-renowned Bascom Palmer Eye Institute. She is passionate about incorporating technology into the future of eye care and has started a public education initiative to inform everyday LED screen users about the effects and the easy ways to protect themselves while continuing to use their devices. Dr. Hartl also founded the international non-profit, Gift of Sight, which is dedicated to curing blindness across the globe.

Kara Hartl, MD, FACS

Board Certified Ophthalmologist

Expert Answer

There are a few things that can cause this, but typically, your blink reflex decreases significantly over time. This cause the tear film to evaporate, which leads to dry and irritable eyes.

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Question

Do your eyes get worse with age?

Kara Hartl, MD, FACS
Board Certified Ophthalmologist
Dr. Kara Hartl is a board certified Ophthalmologist and the Founder and CEO of Mountain View Eye Center in Fairbanks, Alaska. Dr. Hartl is a blue light expert and specializes in studying the effects of natural and artificial light on people’s eyes and bodies. She received a BA in Biology from Harvard University and earned her Doctor of Medicine (MD) from The University of California-San Diego Medical School. Dr. Hartl also trained at the world-renowned Bascom Palmer Eye Institute. She is passionate about incorporating technology into the future of eye care and has started a public education initiative to inform everyday LED screen users about the effects and the easy ways to protect themselves while continuing to use their devices. Dr. Hartl also founded the international non-profit, Gift of Sight, which is dedicated to curing blindness across the globe.

Kara Hartl, MD, FACS

Board Certified Ophthalmologist

Expert Answer

To a degree, yes. It becomes harder to focus at close distances the older you are, which is why a lot of older people use reading glasses.

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Question

Why would the muscles around my eyes hurt after looking at my phone?

Kara Hartl, MD, FACS
Board Certified Ophthalmologist
Dr. Kara Hartl is a board certified Ophthalmologist and the Founder and CEO of Mountain View Eye Center in Fairbanks, Alaska. Dr. Hartl is a blue light expert and specializes in studying the effects of natural and artificial light on people’s eyes and bodies. She received a BA in Biology from Harvard University and earned her Doctor of Medicine (MD) from The University of California-San Diego Medical School. Dr. Hartl also trained at the world-renowned Bascom Palmer Eye Institute. She is passionate about incorporating technology into the future of eye care and has started a public education initiative to inform everyday LED screen users about the effects and the easy ways to protect themselves while continuing to use their devices. Dr. Hartl also founded the international non-profit, Gift of Sight, which is dedicated to curing blindness across the globe.

Kara Hartl, MD, FACS

Board Certified Ophthalmologist

Expert Answer

When you focus really hard on something that's close to you, the muscles around your eyes have to contract. Over time, this can cause fatigue and aches.

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