Common Vision Symptoms
Do You Need Vision Therapy?
Many functional vision problems are invisible on a standard eye test. Headaches, reading difficulties, double vision, and digital eye strain are often the first signs of a binocular vision disorder - treatable with vision therapy in Chennai, but frequently missed for years.
Why Vision Symptoms Are Frequently Missed
Standard eye tests check one thing: whether your eyes can see clearly at distance. They do not test how your two eyes work together (binocular vision), how quickly and accurately they can focus (accommodation), or how efficiently they move across a page (oculomotor function). A person can pass with perfect 6/6 vision in both eyes and still have a significant functional vision problem causing daily symptoms.
This matters because functional vision disorders respond very well to treatment - but only once correctly diagnosed. Many children labelled as "slow readers" or "inattentive", and many adults with chronic headaches or digital eye strain, have an underlying binocular vision problem that a specialist evaluation can identify and a vision therapy programme can resolve.
Symptoms Standard Tests Miss
- Headaches and eye strain during near or screen work
- Double vision that comes and goes, especially when tired
- Reading difficulties despite normal acuity - losing place, rereading lines
- Dizziness, motion sensitivity, or balance problems after concussion
Common Vision Symptoms We Treat
Important: Any one of these symptoms can indicate a functional vision problem. You do not need all of them. A single persistent symptom - especially in a child - warrants a specialist evaluation.
- Headaches during or after reading, screen use, or close work
- Double vision - intermittent or constant, near or distance
- Losing place when reading, rereading lines, or skipping words
- Blurred vision that fluctuates during sustained near tasks
- Eye strain or tired eyes after 20-30 minutes of close work
- Poor depth perception or difficulty judging distances
- Dizziness, balance problems, or motion sensitivity - especially after concussion
- Light sensitivity or discomfort in bright or busy visual environments
- Slow reading speed, poor comprehension, or difficulty copying from the board
When to Seek Help - Decision Guide
Use this guide to decide whether a specialist functional vision evaluation is warranted.
Your Child Has Reading or Learning Difficulties
If your child struggles to read despite adequate intelligence and phonics instruction - particularly if they lose their place, skip lines, or avoid reading - request a functional vision evaluation before attributing the problem to dyslexia or attention difficulties alone.
You Have Unexplained Headaches or Eye Strain
If headaches occur specifically during or after near work or screen use, and standard glasses or contact lenses do not resolve them, a binocular vision problem is the likely cause. Convergence insufficiency is the most common and most treatable.
You Have Had a Concussion or Brain Injury
Visual symptoms are among the most common and persistent effects of concussion. If you have been cleared medically but still have visual symptoms - blurred vision, light sensitivity, reading difficulty, dizziness - request a neuro-optometric evaluation specifically.
You or Your Child Has a Squint or Lazy Eye
Strabismus and amblyopia are often manageable without surgery. If you have been told surgery is the only option, or your child has been patching for months without significant acuity improvement, seek a second opinion from a COVD-certified specialist.
Vision Symptoms FAQs
Can my child have a vision problem if they passed the school eye test?
Yes. School eye tests check visual acuity only - they do not test binocular vision, focusing, tracking, or visual processing. A child can pass with perfect 6/6 vision and still have significant binocular vision dysfunction causing reading difficulties, headaches, and poor concentration.
What is the difference between functional vision symptoms and a refractive error?
Refractive errors (short-sightedness, long-sightedness, astigmatism) cause blur corrected by glasses. Functional vision symptoms arise from how the two eyes coordinate, how quickly they focus, and how efficiently they move across a page. Glasses do not fix these problems - only vision therapy addresses the underlying functional deficit.
I get headaches after screen work - is this a functional vision problem?
Headaches worsening with near or screen work are commonly caused by convergence insufficiency and accommodative dysfunction - not primarily blue light. The root cause is the effort required to keep both eyes aimed and focused accurately. Vision therapy addressing the binocular deficit resolves most cases.
Can vision problems cause balance or dizziness symptoms?
Yes. After a concussion or TBI, disruptions to visual-vestibular integration can cause dizziness and balance difficulties. Vertical heterophoria is a frequently missed cause of chronic dizziness in adults. A neuro-optometric evaluation can identify whether vision is contributing to your balance symptoms.
When should I see a vision therapist rather than a regular optometrist?
See a vision therapist specialist if: symptoms persist despite correct glasses, a child has been told their eyes are fine but still struggles with reading, you have post-concussion visual symptoms, or you have been advised to consider squint surgery. A COVD-certified optometrist has specialist training in functional and binocular vision that goes beyond a standard optometry qualification.
Recognise any of these symptoms in yourself or your child?
A functional vision evaluation is the only way to know for certain. Our COVD-certified specialists in Chennai will identify exactly what is happening and whether vision therapy will help.
Home · All Treatments · Evaluation Process · Cost · FAQs