Good vision is one of the most important aspects of our overall health. However, many of us unintentionally adopt habits that can lead to long-term vision problems. Phoenix eye doctors have identified the top five habits that could harm your eyesight, along with actionable steps to prevent vision damage. In this article, we’ll explore these harmful habits in detail and offer expert insights on maintaining healthy eyes for life.


1. Excessive Screen Time Without Breaks

In today’s digital age, prolonged exposure to screens—whether it’s a computer, smartphone, or tablet—has become a leading cause of vision strain. This condition, often referred to as Digital Eye Strain or Computer Vision Syndrome (CVS), can lead to symptoms such as dry eyes, headaches, and blurred vision.

Why It’s Harmful

Staring at screens for long periods reduces blinking frequency, which causes the eyes to dry out and increases discomfort. The blue light emitted by screens can penetrate deep into the eyes and potentially cause retinal damage over time.

How to Protect Your Vision

  • Follow the 20-20-20 rule: Every 20 minutes, look at an object 20 feet away for 20 seconds to give your eyes a break.
  • Adjust screen brightness to match the lighting in your room.
  • Use blue light-blocking glasses to minimize harmful light exposure.
  • Blink frequently to keep your eyes moist and reduce dryness.

2. Not Wearing Sunglasses Outdoors

Neglecting to wear sunglasses when exposed to sunlight can have long-term consequences for your vision. The sun emits ultraviolet (UV) rays, which can damage sensitive eye tissues and increase the risk of conditions like cataracts and macular degeneration.

Why It’s Harmful

Chronic exposure to UV rays without protection can lead to photokeratitis (a painful sunburn of the cornea), pterygium (growth on the eye), and even cancer of the eyelid or surrounding skin.

How to Protect Your Vision

  • Choose sunglasses that block 100% of UVA and UVB rays.
  • Opt for wraparound styles to provide full coverage.
  • Consider wearing a wide-brimmed hat for additional sun protection.
  • Use UV-blocking contact lenses if prescribed by your eye doctor.

3. Rubbing Your Eyes Frequently

Rubbing your eyes may seem harmless, but this habit can have serious repercussions. The eyes are extremely sensitive, and excessive rubbing can lead to infections, damage to the cornea, and weakened vision.

Why It’s Harmful

  • Rubbing can introduce bacteria and allergens into your eyes, increasing the risk of infections like conjunctivitis.
  • It may cause microscopic tears in the cornea, making your eyes vulnerable to further injury.
  • Chronic rubbing can lead to keratoconus, a condition where the cornea thins and bulges into a cone-like shape, severely impairing vision.

How to Protect Your Vision

  • Use a cold compress to soothe itchy eyes instead of rubbing them.
  • Keep your hands clean to avoid transferring bacteria.
  • Consult a doctor if persistent itchiness is caused by allergies or other underlying conditions.

4. Skipping Regular Eye Exams

Many people only visit the eye doctor when they notice a problem, but skipping regular eye exams can allow hidden conditions to go undetected until they become severe. Regular check-ups are crucial for maintaining optimal vision and overall eye health.

Why It’s Harmful

Eye diseases like glaucoma, diabetic retinopathy, and macular degeneration often develop slowly and without obvious symptoms in their early stages. By the time symptoms appear, irreversible damage may have already occurred.

How to Protect Your Vision

  • Schedule a comprehensive eye exam at least once every two years (or annually if you have a family history of eye diseases).
  • Ensure your eye doctor performs tests for pressure, vision sharpness, and retinal health.
  • Discuss any changes in your vision with your doctor immediately.

5. Poor Diet and Dehydration

Your diet plays a significant role in your eye health. Consuming foods low in essential nutrients and neglecting proper hydration can negatively impact your vision. A lack of vitamins, particularly Vitamin A, C, E, and omega-3 fatty acids, can lead to conditions such as dry eye syndrome and age-related macular degeneration (AMD).

Why It’s Harmful

  • A poor diet deprives your eyes of the nutrients they need to function optimally.
  • Dehydration can reduce tear production, leading to discomfort and increased risk of infections.
  • Excessive consumption of sugary foods can contribute to diabetes, which in turn increases the risk of diabetic retinopathy.

How to Protect Your Vision

  • Incorporate eye-healthy foods such as carrots, spinach, kale, fish (rich in omega-3), and citrus fruits into your diet.
  • Drink at least 8-10 glasses of water daily to maintain proper hydration.
  • Limit processed and sugary foods to prevent vision-related complications.

Additional Tips for Maintaining Healthy Vision

  • Get adequate sleep to allow your eyes to rest and repair.
  • Avoid smoking, as it significantly increases the risk of cataracts and AMD.
  • Use proper lighting while reading or working to reduce strain.
  • If you wear contact lenses, follow the recommended cleaning and replacement schedule to avoid infections.

Protecting your vision requires conscious effort and a proactive approach. By avoiding these harmful habits and adopting healthier alternatives, you can preserve your eyesight for years to come. Consult a Phoenix eye doctor to discuss any concerns about your vision and receive personalized advice.

Dr. Bryan Fuller

Dr. Bryan Fuller of Tatum Eye Care in Phoenix Arizona
Dr. Fuller grew up in Issaquah, Washington and graduated with a Bachelor’s degree in Mechanical Engineering from Washington State University. He decided to ditch the calculator and trade it in for a phoropter and slit lamp. He headed east to The Ohio State University where he received his Optometry degree in 1998. Go Bucks! Not wanting to return to the gray of Washington, after graduation, he headed southwest to sunny Arizona. Shortly thereafter he met Dr. McPhelan and they partnered up at their original location, Optical Illusions. With the success of the first location, the two doctors opened up their north location, Optique at the Ridge. After many years of operating the two locations, it was time for an upgrade. In 2016 they merged the two locations into their larger and current location, Tatum Eyecare! When not at the office, Dr. Fuller enjoys spending his free time with his amazing wife and two boys. Dr. Fuller holds the following degrees:

Ohio State University - Doctorate of Optometry
Washington State University - B.S. Mechanical Engineering

Dr. James McPhelan

Dr. James McPhelan of Tatum Eye Care in Phoenix Arizona
Dr. McPhelan grew up in Southern California and enlisted in the Army at age 17. He graduated from Southern California College of Optometry in 1976, then started practicing optometry in Arizona in 1977. Over the next few years, he grew 20/20 Eye Care to 15 offices. In 1999, he and Dr. Fuller took over Optical Illusions, then opened Optique at the Ridge. In 2016, they created Tatum Eyecare. In his spare time, Dr. McPhelan is an avid golfer, often competing in multiple tournaments through the year. Dr. McPhelan holds the following degrees:


Southern California College of Optometry - Doctorate of Optometry

Dr. Houle

Dr. Houle
Dr. Houle is following in her father's footsteps as an optometrist. She is a North Dakota native who received her Bachelor's degree from the University of North Dakota before earning her Doctorate of Optometry from Midwestern University - Arizona College of Optometry. Dr. Houle began her career in eye care more than 10 years ago, and she worked as a receptionist, optician, and technician before becoming an optometrist. She has a particular interest in the management of ocular disease including dry eye and glaucoma. In her free time, Dr. Houle is an avid baseball fan (go Twins!) and spends as much time as possible with her friends and family in both Arizona and North Dakota.

Midwestern University – Arizona College of Optometry - Doctorate of Optometry
University of North Dakota - Bachelor of Science: Biology

Dr. Kenneth O'Daniel

Dr. Kenneth O'Daniel of Tatum Eye Care in Phoenix Arizona
Dr. O’Daniel was born in the beautiful mountains of Waynesville, North Carolina and grew up in Dayton, Ohio. He attended Wright State University and graduated with his BS in Biology in 1977; shortly thereafter, beginning his Masters in BioChemistry.

Dr. O’Daniel is also a 1983 graduate of the Illinois College Optometry. He met his wife Lori during this period. Lori, a Chicago native, became an integral part of his practice (and life!) shortly thereafter.
He moved to Scottsdale in 1986 to begin practicing inside LensCrafters. In 1990 Dr. O'Daniel opened the Scottsdale LensCrafters, and he also presided as its director of Optometric services.
Dr. O’Daniel became an Optometrist because of his love and passion for photography, physics, and desire provide patients with the ability to see the world more clearly. As a licensed optometrist, Dr. O’Daniel provides complete eye care services for the surrounding communities ages seven and up.
Dr. O’Daniel has had a working relationship with both Dr. Fuller and McPhellan for over two decades. He has served as past director for the Arizona Optometric Association, and past President of the Central Arizona Optometric Society. In January, 2018 Dr. O’Daniel decided to join Tatum Eye Care, the premier Eye Care Center in Phoenix and Scottsdale.
Dr. O’Daniel’s goal is simple: Provide Excellent Eye Care, treat patients as family, and treat everyone honestly and fairly!

Dr. Christina Wong

Dr. Christina Wong of Tatum Eye Care in Phoenix Arizona
A southern California native, Dr. Wong attended UCLA where she received her B.S. in Biology. She then completed her Doctorate of Optometry at the Southern California College of Optometry. Dr. Wong moved to Arizona to complete a residency in ocular disease at Hu Hu Kam Memorial Hospital on the Gila River Indian Reservation. Following residency, Dr. Wong earned the distinction of Fellow in the American Academy of Optometry.

Dr. Wong provides comprehensive eye care to patients of all ages, from pediatrics through seniors. She has a special interest in the management of medical eye conditions including glaucoma, eye infections, dry eye and diabetic retinopathy.
Outside of the office, Dr. Wong enjoys running, going to the beach, rooting for the Bruins, and spending time with her husband and three daughters.
University of California Los Angeles - B.S. in Biology
Southern California College of Optometry - Doctorate of Optometry

Dr. Ryan Felten

Dr. Felten of Tatum Eye Care in Phoenix Arizona
Dr. Felten is a native to Arizona, and was raised in North Phoenix where most of his family still resides. He earned his Bachelor of Science in Exercise Science from Brigham Young University; then returned home to Arizona to pursue his Doctor of Optometry at Midwestern University in Glendale. While at Midwestern University, he was a member of the Beta Sigma Kappa Honor Society and was the recipient of the Clinical Excellence Award in Pediatrics and Vision Therapy. Dr. Felten enjoys working with patients of all ages and also speaks fluent Spanish. Dr. Felten holds the following degrees:


Brigham Young University - Bachelor of Science in Exercise Science
Midwestern University - Doctorate of Optometry