Table 2 Comparison of operation duration between the two groups.

From: To investigate endoscopic membranous nasolacrimal duct resection combined with retrograde lacrimal stent placement in the treatment of extremely inferior lacrimal duct obstruction

Group

Number

Operation duration [Minutes, median (interquartile)]

Experimental group

27

32(29, 34)

control group

27

61(49, 74)

Z

 

Z = − 6.266

P

 

P < 0.05

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