Fig 2.

In vivo confocal microscopy grading system for conjunctival connective tissue organization. Images are 400 by 400 μm. (A) Normal: homogenous, amorphous appearance, with occasional, fine, wispy strands. (B) Grade 1: heterogenous appearance with poorly defined clumps or bands present. (C) Grade 2: clearly defined bands of tissue which constitute less than 50% of the area of the scan. (D) Grade 3: clearly defined bands or sheets of tissue which constitute 50% or more of the area of the scan and in which striations are present. If different grades of scarring are seen within a particular volume scan then the highest grade is recorded. The connective tissue which is graded needs to be separate from that associated with the vascular tissue; if this is not possible then the scan is considered ungradable.