Table 2.

Results of the preliminary study in alkali chemical injury on rabbit's cornea

Rabbit	NaOH (Concentration and duration of exposure)	Clinical inflammatory features (on day-7)			Histopathological inflammatory features (on day-7)
		Conjunctival hyperemia	Corneal edema	Corneal epithelial defect	Grading of PMN
1	1N NaOH (30 seconds)	moderate	moderate	mild	Nil
2	2N NaOH (30 seconds)	moderate	moderate	mild	mild
3	2N NaOH (60 seconds)	severe	severe	severe	mild

N: Normality, NaOH: Sodium hydroxide, PMN:polymorphonuclear