Observation:PrThr:Pt:Cornea/Conjunctiva:Ord:Acid fast stain
observation:prthr:pt:cornea/conjunctiva:ord:acid fast stain
Observation:Presence or Threshold:To identify measures at a point in time:Cornea/Conjunctiva:Ordinal:Acid fast stain
observation:presence or threshold:to identify measures at a point in time:cornea/conjunctiva:ordinal:acid fast stain