Objective To explore a new method for lacrimal passage irrigation after laser dacryocystoplasty surgery. Method One-hundred patients (104 eyes), which underwent laser dacryocystoplasty surgery combined with lacrimal drainage tube indwelling, were divided into two groups. In Group A (50 patients, 52 eyes), lacrimal passage irrigation was performed by traditional No.5 needle. While in Group B (50 patients, 52 eyes), it was done by No.7 blunt round needle designed by the researchers. Lacrimal passage irrigation was performed three times, each at the 3rd day, 1 week and 1 month after surgery. The silicone tube was removed 3 months after surgery and the treatment was evaluated. Results The total effective rate was 64% (32/50) in Group A and 92%(46/50) in Group B. The difference was statistically significant (χ2=18.537, P < 0.01). Conclusions The No.7 blunt round needle showed better effect when used for lacrimal passage irrigation after laser dacryocystoplasty surgery. It could improve the efficiency of lacrimal passage irrigation, thus decreasing irrigation times and reducing psychological pressure for the patients, which is worthy of clinical application.

Objective To investigate the NO and NOS activities of retina tissue after hemorrhagic shock and resuscitation in rabbit and the effects of taurine on them. Methods Twenty four New Zealand rabbits were randomly divided into three groups: control group, shock and resuscitation (SR) group and taurine group. Chromatometry was used to detect the NOS activities. Results The ON content and NOS activities, either in retina tissue or in plasm, increased significantly 3 h after hemorrhagic shock and resuscitation (P

Objective: To determine the contents of thromboxane (TXA_2) and prostacyclin (PGI_2) in optic nerves after acute intraocular hypertension injury so as to provide experimental data for the treatment of the clinical intraocular hypertension. Methods: A rabbit acute intraocular hypertension injury model was established by 90-min anterior chamber douche. Thirty adult rabbits were equally randomized into 5 groups: 4 intraocular hypertension injury groups (60 min, 90 min, 24 h and 48 h after intraocular tension normalization) and a normal control group. The eyes of all rabbits were removed and the homogenate of optic nerves was used to determine the contents of TXB_2 and 6-Keto-PGF_ 1?, and the metabolites of TXA_2 and PGI_ 2 by radioimmunoassay. Results: The contents of TXB_2 and 6-Keto-PGF_ 1? in the 60 min and 90 min groups were significantly higher than those of the normal control group (P