Identification - Visual impairment

• Mild vision loss -6/12-6/18 Snellen (LogMAR 0.3-0.48).
  
  
• Moderate vision loss - 6/18 – 6/36 Snellen (LogMAR 0.5 – 0.78).
  
  
• The child may be registered with a Certificate of Visual Impairment (CVI) as sight impaired.
  
  
• The pupil has impaired function in the educational setting and this is generally accepted to be the key criterion. While it is difficult to categorise these pupils they may include those with:
  
  
  • Restricted fields.
    
    
  • Fluctuating vision e.g. nystagmus.
    
    
  • Deteriorating / degenerative condition.
    
    
  • Some pupils may have a restricted field of vision.