Ocular Surface Disease Index (OSDI)

Ocular Surface Disease Index (OSDI)

Contain 3 sections which assess recent symptoms and is one of the most frequently used instruments to assess DES.

• Have you experienced any of the following during the last week?
  • eyes that are sensitive to light?
  • eyes that feel gritty? .
  • painful or sore eyes?
  • blurred vision?
  • poor vision?
    
    
• Have problems with your eyes limited you in performing any of the following during the last week?
  • reading?
  • driving at night?
  • working with a computer or bank machine (ATM)?
  • watching TV?
    
    
• Have your eyes felt uncomfortable in any of the following situations during the last week?
  • windy conditions?
  • places or areas with low humidity (very dry)?
  • areas that are air conditioned? (1,2)

12 items are graded on a scale of 0–4 and the sum of scores for all questions answered is calculated.

• 0 - none of the time
• 1 - some of the time
• 2 – half of the time
• 3 – most of the time
• 4 – all of the time

The scores range from 0 to 100. According to the final score, the patient's symptoms can be categorized as

• normal - 0–12
• mild dry eye -13–22
• moderate dry eye - 23–32
• severe dry eye - 33–100 (2)

Reference:

• (1) Drug and Therapeutics Bulletin. The management of dry eye. BMJ. 2016;353:i2333.
• (2) Amparo F, Schaumberg DA, Dana R. Comparison of Two Questionnaires for Dry Eye Symptom Assessment: The Ocular Surface Disease Index and the Symptom Assessment in Dry Eye. Ophthalmology. 2015;122(7):1498-503.