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In order to function properly, the eyes must be able to focus, coordinate, move and assess their surroundings. These are basic visual skills. However, some people have difficulty with one or more, leading to visual complications. Some signs you or your loved ones have a basic visual dysfunction may include difficulty reading or with reading comprehension, headaches, eye pain and/or fatigue, double vision, poor performance of tasks, difficulty with rhythm, challenges with learning left and right, and reversing numbers or letters when copying or writing. The following articles go into more details on the attributes and impact of each basic visual skill.
How the Eyes Work
Eye Movement
Eye movement refers to the voluntary and involuntary movements of the eyes that assist with obtaining, fixating and following visual stimuli. The eyes are each connected to a system of six muscles. Light is sensed by the retina, which is a type of tissue that contains cells known as photoreceptors. These
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Brian D. Marshall, O.D., F.A.A.O.
Dr. Brian Marshall is certified as a therapeutic optometrist and an optometric glaucoma specialist. He has been in practice for over 20 years. After graduating with honors from the University of Houston College of Optometry, he completed a residency in Cornea and Advanced Contact Lens Practice and later a fellowship in Refractive Surgery.
Tina M. Marshall O.D.
Dr. Tina Marshall is certified as a therapeutic optometrist and an optometric glaucoma specialist. She has been in practice for over 20 years. She earned her degree through the New England College of Optometry in Boston, Massachusetts.
Tina M. Marshall O.D.
Dr. Tina Marshall is certified as a therapeutic optometrist and an optometric glaucoma specialist. She has been in practice for over 20 years. She earned her degree through the New England College of Optometry in Boston, Massachusetts.
Tina M. Marshall O.D.
Dr. Tina Marshall is certified as a therapeutic optometrist and an optometric glaucoma specialist. She has been in practice for over 20 years. She earned her degree through the New England College of Optometry in Boston, Massachusetts.
Brian D. Marshall, O.D., F.A.A.O.
Dr. Brian Marshall is certified as a therapeutic optometrist and an optometric glaucoma specialist. He has been in practice for over 20 years. After graduating with honors from the University of Houston College of Optometry, he completed a residency in Cornea and Advanced Contact Lens Practice and later a fellowship in Refractive Surgery.
Courtney Cates, O.D.
Dr. Courtney Cates is originally from Amarillo, Texas and received her Bachelor of Science degree from Texas A&M University. She then attended the prestige University of Alabama at Birmingham School of Optometry where she earned her Doctor of Optometry degree and graduated with academic honors in 2017.