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Table 2 Ocular surface examination of patients presenting for a routine ophthalmic visit

From: Eyelid Disorders in Ophthalmology Practice: Results from a Large International Epidemiological Study in Eleven Countries

Parameter Value
Conjunctival examination N = 6473
 Normal 35.1%
 Abnormal 64.9%
Type of conjunctival abnormality N = 4201
 Papillae 13.2%
 Conjunctival hyperemia 87.8%
 Fluorescein staining 14.0%
 Follicles 13.1%
 Concretions 8.0%
Corneal examination N = 6405
 Normal 71.9%
 Abnormal 28.1%
Type of corneal abnormality N = 1801
 Superficial punctate keratitis (fluorescein) 81.0%
 Ulceration 6.2%
 Pannus 9.8%
 Filaments 14.5%
 Tear film examination
  Break-up time N = 5527
   Normal 49.5%
   Abnormal (< 10 s) 50.5%
 Schirmer’s test N = 4758
  Normal 63.0%
  Abnormal (< 10 mm in 5 min) 37.0%
  1. Some patients had concurrent conjunctival or corneal abnormalities