Utilisation of a Novel Test to Measure Severity and Treatment Efficacy of Posterior Blepharitis

Table 1

COTE grading system.

Grade	Nature of secretion on compression
1	Clear oil
2a	Easy egress of pus
2b	Slow and difficult egress of pus
3	Thick toothpaste-like secretion (worm-like)
4	Complete blockage of tarsal gland; no egress of secretion visualised