The Thyroid Fixer, Episode 585

Title: When It's Not Your Thyroid: The Vision Problem Making You Tired, Foggy, and Miserable
Host: Dr. Amie Hornaman
Guest: Dr. Bryce Appelbaum, Functional Optometrist
Published: December 9, 2025

Overview

This episode shatters a long-standing blind spot in the world of thyroid and hormone health: the powerful, often-overlooked influence of vision—not just eyesight—on symptoms like fatigue, brain fog, headaches, and more. Dr. Amie Hornaman welcomes functional optometrist Dr. Bryce Appelbaum to unravel how hidden “functional vision problems” can mimic or worsen thyroid symptoms, why most eye doctors miss these issues, and how anyone—at any age—can retrain their visual system to restore clarity, energy, and quality of life.

Key Discussion Points & Insights

1. Vision vs. Eyesight: A Crucial Distinction

• Eyesight: Refers to sharpness or clarity (can you read the chart?); a symptom addressed with glasses/contacts.
• Vision: A brain-driven process that organizes, interprets, and acts on what our eyes see; critical for how we function and perform.

“Eyesight is our ability to focus light clearly—it's a symptom. Vision is entirely brain.” — Dr. Bryce Appelbaum (09:47)

2. Functional Vision Problems Are Widespread & Overlooked

• Many fatigue, brain fog, and even ADHD-like symptoms may stem from vision, not “just” hormones or brain chemistry.
• Most eye exams are not designed to detect vision processing issues—only structural or refractive problems.
• Symptoms include:
  • Reading fatigue and loss of place (14:49)
  • Screen exhaustion and headaches
  • Motion sickness
  • Poor depth perception or problems with gait
  • Losing objects/misplacing keys
  • Sensory overload

3. The Myths of Age-Related Vision Loss

• The belief that “readers” are inevitable in your 40s and beyond is a myth.
• The visual system—like any other muscle group—can be trained and optimized at any age.
• Active vision training can delay or even avoid the need for reading glasses for years, possibly decades.

“Anyone can develop the ability to lock in focus…you can, at a minimum, kick the can down the road [on readers] for decades.” — Dr. Bryce Appelbaum (12:56)

4. How Vision Ties into Thyroid, Hormones, and Neurology

• Dysfunctional vision is intimately intertwined with hormonal imbalances and neurological symptoms:
  • Dry eyes, light sensitivity, blurred or double vision are recognized thyroid symptoms.
  • Vision overload can contribute to fatigue, migraines, and fogginess—often misattributed to other causes.
  • “Vision problems are brain problems”—and can mimic many common misdiagnoses (ADHD, dyslexia, etc.).

“If you cannot control your eyes and their ability to focus, you cannot control your mind and its ability to focus.” — Dr. Bryce Appelbaum (21:01)

5. Conventional Eye Care Is Missing the Mark

• Standard eye exams (~10–15 minutes) miss most vision processing and coordination issues; Dr. Appelbaum’s functional vision evaluations last up to two hours.
• Key areas typically missed:
  • Eye tracking and teaming
  • Convergence and accommodation
  • Depth perception
  • Peripheral vs. central processing
• Band-aid solutions (glasses/contacts) can exacerbate underlying dysfunction over time if root causes are ignored.

"Your prescription should not change as you are an adult unless there’s a functional vision problem that’s not being identified." — Dr. Bryce Appelbaum (18:08)

6. Hidden Impacts: ADHD, Dyslexia, Concussions, and More

• Up to 1 in 4 children has a functional vision problem affecting learning.
• 15 of 18 ADHD symptoms have a visual component that can be treated.
• Migraine, vertigo, and “brain fog” are sometimes mislabeled when there’s an underlying vision dysfunction—especially post-concussion.
• Real-life stories:
  • A teenager’s undiagnosed functional vision issues after a football concussion led to loss of depth perception, brain fog, and problems with daily function (30:52–38:43).
  • Children misdiagnosed and medicated for ADHD or dyslexia but actually suffering from convergence insufficiency—cured through vision therapy.

“For him it’s really unstable…imagine if something terrible happened on the road because he was so tunneled in, his peripheral vision collapsed.” — Dr. Bryce Appelbaum (34:38)

7. Vision and Autism

• Many autistic individuals struggle with motor coordination, eye contact, and even toe-walking due to underlying spatial vision distortions.
• Prism lenses and targeted exercises can dramatically improve social, reading, and physical function.

“Often somebody like Bodhi is also relying on touching everything...he’s not able to touch the world visually, yet.” — Dr. Bryce Appelbaum (49:38–50:06)

Memorable Quotes & Moments

| Time | Speaker | Quote | |----------|-------------|-----------| | 09:47 | Dr. Bryce | “Vision is entirely brain. Vision problems are brain problems, and there are solutions for these brain problems.” | | 14:49 | Dr. Bryce | “If you’re using reading as a sleeping pill...your mind is wandering, that is a clear sign the eyes are not working well together as a team.” | | 21:01 | Dr. Bryce | “15 of the 18 symptoms associated with ADHD have a visual component that are treatable.” | | 37:41 | Dr. Bryce | “This kid had perfect eyesight…this is not your eyes. This is how your brain is receiving the input from your eyes, organizing it and knowing what to do with it. So anyone listening, the take-home is there’s so much more to vision than just 20/20 eyesight.” | | 46:07 | Dr. Bryce | “If you can’t focus your eyes, you can’t focus your mind. Any change in eye movement is a change in attention, voluntary or involuntary.” | | 50:51 | Dr. Bryce | “Our visual function changes as we age…But the whole mindset that cognitive capacity and vision decline as we age—that’s not normal, that’s just common.” |

Timestamps for Key Segments

• Vision vs. Eyesight Defined: 09:03–09:47
• Fatigue and Brain Fog as Vision Problems: 08:15–09:41, 14:49–16:30
• Symptoms of Functional Vision Problems: 14:49–16:30
• Migraine & Neurological Overlap: 16:30–17:17
• Conventional Eye Care Gaps & Misdiagnosis: 20:18–25:46
• ADHD/Dyslexia Cases and Vision: 21:01–23:12, 43:41–46:07
• Post-Concussion Story: 30:52–38:43
• Vision, Gait and Neurologic Mimics (MS, Autism): 38:43–50:06
• Eye Exercises & Prevention (Eye Push-ups): 50:51–54:09
• On Blue Light & Digital Fatigue: 61:33–64:44
• ScreenFit At-Home Vision Training: 55:41–61:11
• Final Takeaway - Prioritize Vision: 65:10–65:47

Practical Takeaways: What Listeners Can Do

• Recognize vision is not just about clarity; it’s about the brain. If you or a loved one have unexplained fatigue, headaches, or attention issues, think vision.
• Self-evaluate: Are you exhausted after meetings or screen time? Fatigued by reading? Get motion sick? Lose things often?
• First Step: Seek evaluation from a board-certified functional vision specialist. Use covd.org to find providers.
• Daily Eye "Push-ups": Cover one eye, hold your thumb at arm’s length, bring it close until blurry, focus to make it clear, then look far. Alternate eyes, repeat. (50:51–54:09)
• Train your vision just like you train your body.
  • Use structured vision programs at home (e.g., Dr. Appelbaum’s ScreenFit program—use code DRAMIE for $200 off, 55:41–61:11).
• For blue light and screens: Block artificial blue light at night to support sleep, but performance and comfort are about much more than blue light lenses (61:33–64:44).
• Trust your instincts—if something feels off or harder than it should be, don’t accept “it’s normal.”

“With almost any symptom, we all need to consider that vision could be and is likely a part of the problem. Put your vision first…” — Dr. Bryce Appelbaum (65:10)

Resources & Next Steps

• Find a Functional Vision Specialist: https://covd.org
• Dr. Appelbaum’s website & programs: myvisionfirst.com
• Instagram: @DrBryceAppelbaum
• ScreenFit Program (At-home digital vision training): Use code DRAMIE for $200 off

Tone & Final Thoughts

This was an “eye-opening” (pun intended) episode, full of energetic back-and-forth, personal stories, and groundbreaking insights. Dr. Amie’s warm, empathetic advocacy for her audience combines with Dr. Appelbaum’s expertise, demystifying a topic left unaddressed in hundreds of episodes—proving that, even after everything else has been tested or treated, vision may be the missing key to truly feeling better.

If you found your symptoms mirrored in this discussion, don’t dismiss or delay—consider your vision as a powerful lever for reclaiming your mind and body.