[Observation on therapeutic effect of squamous blepharitis treated with liquefacient nitrogen cryotherapy].

PURPOSE: To observe the therapeutic effect of squamous blepharitis treated with liquefacient nitrogen cryotherapy.

METHODS

126 patients (234 eyes) with squamous blepharitis were randomly divided into two groups. Observation group 65 patients (120 eyes) were treated with liquefacient nitrogen cryotherapy adding antibiotic eye drops and ointments. Control group 61 patients (114 eyes) were treated with antibiotic eye drops and 2% yellow mercury oxide ointments. Both groups were treated for two courses, 20-25 days per course.

RESULTS

Sixty-four eyes of observation group were cured, 30 eyes were improved and 26 eyes were ineffective. Thirty-two eyes of improved and ineffective patients were cured after an additional course. Total cured rate was 80%. Fourty-eight eyes of control group were cured, 30 eyes were improved and 36 eyes were ineffective. Total cured rate was 42.11%. The difference of two groups were significant (chi2=35.47, P < 0.01).

CONCLUSIONS

Liquefacient nitrogen cryotherapy was an effective method for squamous blepharitis.