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The Chadwick Vision Clinic blog is where we share our knowledge on everything from complex optical cases to practical tips for everyday eye health.

This blog is largely based on our Ask Chadwick YouTube series. In these videos, we answer questions from you or questions that we come across with regularity. Our goal is to provide you jargon-free explanations and advice that’s actually useful.

Filter through using the headings below to see articles related to different topics. 

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  • All
  • Aniseikonia
  • Binocular Vision Disorders
  • Distance Vision
  • Epilepsy
  • Lighting
  • Low Vision
  • Magnification
  • Photophobia
  • TBI & Concussions
Man with glasses experiencing headache, hand on forehead, stress relief concept.

Why Do I Still Have Headaches with My New Prescription?

Learn why you might still have headaches and eye strain even with a new prescription. This video explains convergence insufficiency, the importance of binocular vision exams, and treatment options like prism and vision therapy.

Smiling child with purple sunglasses, looking through a window, capturing joy and playfulness in the sunlight.

Are Blue-Tinted Lenses effective for Photosensitive Epilepsy?

Flickering lights triggering seizures? Learn how Z Blue tinted lenses filter out problem wavelengths and may help reduce seizure risks.

Close-up of a person's eyes and skin, depicting detail and texture in natural lighting.

What Is Aniseikonia and How Does It Affect Vision?

Aniseikonia is a difference in image size between your two eyes. We explain how this can lead to symptoms like headaches and fatigue, and how specialized lenses can help.

Elderly woman having an eye exam consultation with a healthcare professional in a medical office setting.

How Can I Start Seeking Help for My Binocular Vision Dysfunction?

Binocular vision dysfunction can be a complex problem. Learn about a two-phase approach that first addresses any underlying issues between your eyes before you begin vision therapy.

Black eyeglasses with interchangeable yellow and orange lenses on a wooden surface.

How Can Tinted Eyewear Help With TBI and Concussion Recovery?

Learn how tinted eyewear can be a practical solution for concussion and TBI recovery. Discover how tinted lenses filter visual input, helping your brain heal while you stay functional.

Man relaxing on a couch, reading a magazine with magnifier glasses, next to a table with magnifying tools.

How Do I Use A Magnifier and What Is Focal Length?

Learn the right way to use a magnifier to make objects look bigger. We’ll cover focal length, field of view, and why choosing a high-quality, precisely calibrated lens is essential for true magnification.

Close-up of a subway sign for 7 Avenue Broadway Times Square in NYC, with a small telescope in the foreground.

How Do I Use A Monocular Telescope?

Learn how to use a monocular telescope to improve your distance vision. We’ll show you how to focus it and explain the important trade-off between magnification power and field of view.

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What Is Convergence Insufficiency and How Is It Treated?

Convergence insufficiency is a common visual problem in our digital world. Learn about its symptoms, from headaches to neck aches, and how prism lenses or vision therapy can help.

Woman feeling stressed at work, sitting at a desk with a laptop, holding her head in her hands.

Why Does the Eyecare Industry Struggle With Low Vision?

In this post we explore why focusing on a patient’s functional needs and passions, rather than just their diagnosis, is the key to finding truly effective solutions.

Optometrist holding eyeglasses options over a clipboard with vision test results.

Do You Need a Prescription For High Powered Readers?

Learn why consulting a low vision specialist is highly recommended, even if you can purchase some devices without a prescription. Expert guidance can help you find the right solutions faster.

Stressed senior woman covering face with hands in bright office environment, expressing anxiety or fatigue.

What Is Binocular Vision, and How Are Binocular Vision Disorders Corrected?

Binocular vision is how your brain turns two images into one. Learn about common disorders, how they affect you after a concussion or with computer use, and solutions like prism and the Shaw Lens.

Stacked black monocular lenses on a white marbled surface, featuring various magnifications.

What Are Monocular Telescopes and How Do They Work?

Discover how monocular telescopes help low vision patients with “spotting” tasks like reading signs. Learn why choosing the right magnification is key to balancing clarity and a wide field of view.