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Hornsby Irlen Dyslexia Clinic | About Us

Who We Are

My name is Dianna Kellerman. I am the director of Hornsby Irlen Dyslexia Clinic based in Sydney. I am a qualified teacher, Irlen diagnostician, dyslexia diagnostician and life coach.
I have an empathy for you and your situation. I love nothing more than seeing you succeed or your child succeed, that is why I am the best for you.

Each person is seen as unique. Therefore each person is individually assessed and a unique colour is worked out for coloured glasses or contact lenses.​

The tutoring I offer at Hornsby Irlen Dyslexia Clinic is individually tailored to make up the gaps that may have been caused by dyslexia or other some other cause.  I pride myself on earning the respect of clients by providing a quality service.

Life coaching can take you where you want to go along the path to your future success and build the life you want. A personal coach such as myself can help you achieve your goals!

Giraffe wearing Irlen glasses

Irlen Syndrome is a visual processing dysfunction. It is not an optical problem, it is a problem associated with how the brain processes the visual information it receives from the printed page and the environment.

Signs and Symptoms

  • Light Sensitivity
  • Reading Difficulties
  • Print Distortions
  • Eye Strain, Headaches, Migraines
  • Fatigue
  • Spelling Difficulty
  • Attention, Concentration, Behaviour Problems
  • Writing Difficulties
  • Dept Perception Issues


Experience Irlen Syndrome


Learn more about Irlen Syndrome

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Hornsby Irlen Dyslexia Clinic 
Central Coast Irlen Dyslexia Clinic 

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Hours of Operations
Monday – Thursday 9:30am – 4:30pm
Central Coast Irlen Dyslexia Clinic – Saturday appointments

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