The most common symptoms are:
- Eye strain
- Headaches/migraine
- Nausea
- Fatigue
- Restlessness, anxiety, irritability, dizziness or mood changing
- Poor performance in sports
- Depth-perception problems
- Slow or inefficient reading
- Poor reading comprehension
- Text and environment look different
- Concentration problems
- Light sensitivity
- Difficulty with reading music
- Difficulty with copying
- Difficulty with maths