Table 2.

LSD test between all studies groups of tear strength test.

Study groups		Mean difference	SE	Sig.
Group (A)	Group (B)	−2.268	0.921	0.020 S
Group (B)	Group (C)	−1.692	0.921	0.077 NS
Group (C)	Group (A)	3.960	0.921	0.000 HS