Table 1.

Conjunctival irritation scales

Conjunctival assessment	Scale
	0	1	2	3	4
Congestion	None	Flushed reddish; slight perilimbal injection	Bright red; ≥75% perilimbal injection	Dark, beefy red; bulbar, palpebral, perilimbal injection; presence of petechia	N/Aa
Swelling	None	Swelling above normal with no lid eversion	Swelling with misalignment of lids; upper > lower	Swelling with partial eversion; upper = lower	Marked eversion; upper > lower
Discharge	None	Present on inner portion of eye	Abundant on lids and hair	Marked discharge on periocular skin	N/Aa

^aNA, not applicable.