Home » Vision Therapy Blog

Vision Therapy Blog

Keep up-to-date on the latest vision-related news and eye care events in our Practice. The items are displayed by year and month. To view older entries use the links in the box below to select the year and month you would like.

Top 5 Reasons to Perform Cycloplegic Refraction

Why use dilating eye-drops in a child's eye exam? It may be performed to detect vision disorders, especially in young children who cannot verbally provide a clear and accurate description of their vision problems, and are frequently unaware of the presence of those problems. The following article is geared towards...

Visual Symptoms in Traumatic Brain Injury

 Monica Bell A traumatic brain injury occurs as a result of forces from impact disrupting the functioning of brain cells and their ability to effectively transmit signals. As a result, changes in physical, cognitive, and emotional aspects may be observed. Physical symptoms include headaches, dizziness, nausea, vomiting, drowsiness and sensitivity...

WICKFEST! Wickenheiser Female World Hockey Festival

  By: Debbie Luk We had the wonderful opportunity to participate at an empowering and inspiring hockey event for girls. This special weekend is the dream come-to-life of six-time Olympian Hayley Wickenheiser. Hayley is pleased to host her seventh festival in this exciting city and venue, in partnership with Girls Hockey...

ADHD or Vision Problem?

We have previously blogged about how vision problems have similar symptoms as AD(H)D, and how to tell the difference between the two. A recent study discusses how treating convergence insufficiency, a common eye-teaming dysfunction, can result in reduction of attention deficit symptoms. Behavioral and Emotional Problems Associated With Convergence Insufficiency in Children:  An Open Trial.  The paper...

Sports Training with Strobe Glasses

Under stress, there is a tendency for fine muscles to deteriorate. For instance, we may lose our voice, our hands may start shaking, and our functional visual skills can fail. Functional visual skills refer to one’s ability to maintain visual focus, track a moving target, coordinate the two eyes for...

Demystifying Hyperopia (Farsightedness)

By: Jessica Yang Optometry Intern, Class of 2016, and Debbie Luk, Developmental Optometrist The terms myopia (nearsightedness) and hyperopia (farsightedness) are often confused with each other. People with nearsightedness can see better up close than objects in the distance. Some children with mild to moderate amount of nearsightedness are asymptomatic. This...

Myopia Control

By Cassandra Biro, Debbie Luk What is Myopia and how do you correct it? Myopia (near-sightedness) results when the power of the cornea is stronger and/or the length of the eye is longer than average. This results in light focusing in front (instead of on) the retina making distant objects...

Optometric Treatment for Post-TBI Patients

By: Yi Zheng, Optometry Intern, Class of 2016 Traumatic brain injuries (TBIs) such as concussions, strokes and whiplash injuries frequently result in oculomotor dysfunction and visual disturbances. Common vision disorders associated with TBIs include deficits in accommodation, version, vergence, visual field, and photosensitivity.1 The intimate interactions between these visual systems can...

Making Learning Fun!

Therapists, educators, and parents realize the benefits of games have on learning.  Game based learning (GBL) is designed to balance learning and fun!  They satisfy our fundamental need to learn by providing enjoyment, motivation and creativity. Below are some educational games hand picked by Dr. Luk to assist in visual perception...

Tetris, Dig Rush Video Games for Lazy Eye

Lazy eye is a chronic condition that is associated with abnormal development in the visual center of the brain. Hence lazy eye does not just affect the eye sight (visual acuity) of one eye, but in fact it is a binocular vision problem affecting depth perception, eye focusing and eye...

Are your children’s eyes ready for school?

By Dr. Debbie Luk, BSc(Hons), OD, FCOVD, Dr. Shaelen Morrison, BSc(Hons), OD, and Dr. Alison Leung, OD Vision is an integral part of a child’s learning and development. Vision is the fourth most common cause of disability in North America. This is an important statistic as 80% of what children...

5 Things You Need To Know About Convergence Insufficiency

Above: Carter Hutton, Canadian professional ice hockey goaltender, undergoing convergence testing Written By: Cassandra Biro, 3rd year Optometry Student & Vision Therapist for Dr. Debbie Luk What is Convergence Insufficiency? Under normal circumstances, the eyes must turn inwards to view objects at near. Convergence insufficiency results when an individual has...

Bad Visual Habits

Although a therapist will probably work on building your child's eye tracking skills during vision therapy, that doesn’t mean that your child will automatically adopt proper eye movements when reading to you at home. He/she might be so used to either bobbing or moving the head side to side, that...

Continuing Education in Vision Therapy and Rehabilitation

Dear Colleagues, We are excited about the upcoming Calgary Vision Event in September. This intimate and highly interactive course is open to optometrists, ophthalmologists, orthoptists, and physicians and therapists who treat TBI patients. Topics include vision development, visual neurology and traumatic brain injury. It will also cover corresponding diagnosis, management...

What’s So Important About Doing My Homework?

  By: Paul Harris, OD, FCOVD, FAAO, FABCO Home activities have been an integral part of our vision therapy program. The pioneer clinicians in the field noticed that when home practice was done on a regular basis, more profound and lasting changes in behavior were noted. This was passed on...

Update on Irlen Lenses

There is much controversy when it comes to whether Irlen/Scotopic Sensitivity Syndrome (IS or SSS) exists or not and if its proposed treatment of coloured filters is effective for treating reading difficulties. Irlen Syndrome is described as a perceptual condition where individuals experience sensitivity to certain wavelengths of light thus...

Traumatic Brain Injury and Vision

What is traumatic brain injury? Traumatic brain injury (TBI) is defined as any damage or alteration to brain function due to external physical force. TBIs can be caused by falls, motor vehicle accidents, assaults, concussions, gun shots, or explosions and blasts etc. There are three levels of TBI: mild, moderate and...

Are Video Games and Computers Bad for Your Eyes?

Above: Patient wearing computer glasses designed to reduce eye strain and fatigue By Anita Tieu, Doctor of Optometry Senior Intern How are video games and electronic devices integrated into our lives?    With the numerous electronic devices available, video games have become a large part of entertainment for adults and...

Visual Motor Integration

  Above: one of our patients playing a game called Multi-Matrix. It trains eye-tracking, eye-hand coordination and visual motor integration.  Summer is half way over, is your child ready for school in September? One of the fundamental skills for a child's development is called Visual Motor Integration. Visual Motor Integration...

Dyslexia and Vision

    By: Helen Mach and Debbie Luk Does your child read like this?  Reversal of letters, difficulty with decoding the alphabet, and difficulty with recognizing words and letters are common characteristics of a disorder called dyslexia. Dyslexia is the most common learning disability that affects 5 to 10 percent...

How do we see?

"We look with our eyes. We see with our brains. We understand with our minds." ~ Harry Wachs, OD   Pretend you are a grade one student looking at some shapes on a page called ‘words’ that are made up of ‘letters’ The letters are clear, but what is the...

Surgery for Intermittent Exotropia?

Intermittent Exotropia (outward eye turn) can develop at any age. When the eye is turned, it can be a cosmetic concern. Further, it can result in double vision, words moving on a page and lost of depth perception. Depth perception is the ability to judge the distance of an object, and...

Making the Lazy Run

Written by: Theola Li, Univeristy of Waterloo Forth Year Optometry Intern We are all aware of what being lazy means; unwilling to wake up in the morning, watching TV instead of doing work, staying at home to eat instead of going to the gym. But what does an eye being...

Optometric Care of the Struggling Student

  by Leonard J. Press, O.D., FAAO, FCOVD It isn't news to many of us that a significant number of students struggle needlessly with undetected or untreated learning problems.  But when an organization with the prestige of the American Academy of Optometry publishes a Position Paper on the subject, people will...

Visual impediments a key factor in childhood learning and behavioural difficulties

For Immediate Release — Wednesday, October 23, 2013  U of L paper indicates visual impediments a key factor in childhood learning and behavioural difficulties  A University of Lethbridge researcher is calling for more comprehensive, and compulsory, early childhood vision assessments to help reduce potential learning and behavioural difficulties that affect...

A Vision Experiment with Four Teachers

This is a must watch for educators and parents! This video demonstrates some of the reasons why vision screening by a school nurse or pediatrician can be misleading. There are ~20 visual skills that the standard eye chart does not test. Even if your child has 20/20 eye sight, they...

Patients with Special Needs

Vision Problems and Special Needs Children Dr. Debbie Luk and the vision therapists at the Vision Therapy Calgary have experience working with children with autism, cerebral palsy, Down syndrome, sensory integration disorder and other conditions. Roughly 40% of our patient population has some type of special issue. Dr. Luk is...

ADHD and Vision Problems – Are They Related?

By: Vicky d’Entremont and Dr. Debbie Luk Many children are mislabeled as Attention Deficit/Hyperactivity Disorder aka (ADHD) by parents, teachers, pediatricians and eye care professionals. Have you investigate whether an undetected visual deficit may be mimicking or co-existing with ADHD? Yes, even if your doctor says your child sees 20/20,...

How do we see 3D?

Clikc for information on conditions causing reduced depth perception: Amblyopia, Convergence Insufficiency...

It’s Time to Stop Arguing and Help Our Children!

COVD Joins with Author, Educator, & Expert in Early Learning Success, Dr. Bob Sornson in Saying “It’s Time to Stop Arguing and Help Our Children!!” 1 Aug, 2013 15:30 CET The College of Optometrists in Vision Development is pleased to welcome Dr. Bob Sornson in helping us celebrate August as International...

Visual Impediments to Learning

Do you know someone who is struggling in school? Could it be a vision problem? How is vision and learning related? For any one who works with children, this is a very informational journal article written by a Canadian colleague: Dr. Charles Boulet.    Piquette N, Boulet C. Visual Impediments...

What do you know about Autism?


Great Eye Questions Asked by You!

By: Ailin Huang Over the past school year, Dr. Luk was invited to different primary schools to teach about the eyes. The students and teachers were very enthusiastic, and they asked some really good questions. We would like to share with you the answers to the most common questions.    1.     ...

School’s Almost Out! What do I do with my kids do now?

Maybe you’re planning vacations, summer camps, or perhaps thinking about tutoring programs to give your child an academic head start. In either case, remember to add “getting an eye exam” to your list of summer plans for your children. This is because 80% of learning is visual. And even if...

Eye Health talks at NW Schools!

Dr. Luk will be presenting an interactive session for primary school students.  May 8th - St. Joseph School Grade 3/4 Class June 6th - Collingwood School Grade 3 Class June 11th - St. Joseph School Grade 3 Class June 12th - Collingwood School Grade 3 Class  ...

Welcome Calgary Girl Guides

  We had a wonderful time hosting 25 Girl Guides at our office. Dr. Debbie Luk gave a presentation about how we see with not only our eyes, but with also  our brain! We also had an interactive session doing some vision therapy exercises on our new touch-screen 3D TV....

Request Your Next Appointment Online…

You can now request your next appointment online. Find out how...

Pink, Stinging Eyes?

It Could Be Pink Eye.