Clinical Evaluation of Recurrence Rate of Pterygium Operation according to Mitomycin C Concentration

PURPOSE: The authors compared the recurrence rate and complications of primary pterygium operation with respect to mitomycin C concentration. METHODS: Four hundred twenty three eyes with primary pterygium underwent surgery using the bared sclera method. One hundred nineteen eyes randomly chosen were treated with 0.02% mitomycin C (Group I) twice a day for 5days, 138 eyes were treated with 0.01% mitomycin C (Group II), and 166 eyes were treated with 0.005% mitomycin C (Group III). RESULTS: During the mean follow-up period of 6 months, the overall recurrence rate was 14.7% (62 eyes). Recurrence rates in each group : 8.4% (10 eyes) in Group I , 13.7% (19 eyes) in Group II , and 19.9% (33eyes) in Group III . Complications seen in Group I were corneal abrasion (1 eye), symblepharon (1 eye), and postoperative corneal scar (1 eye). Complications seen in Group II were symblepharon (1 eye), and postoperative corneal opacity (2 eye) and seen in Group III were symblepharon (1 eye), and postoperative corneal opacity (1 eye). We conclude that a higher concentration of mitomycin C (0.2 mg/ml) reduces the recurrence rate of pterygium. CONCLUSIONS: We recommend the use of mitomycin C concentration of 0.02% twice a day for 5days to lower the recurrence rate and complications after excision of primary pterygium

Silicone Intubation for Canalicular or Common Canalicular Obstruction in Adult

PURPOSE: Patients with canalicular or common canalicular obstruction have been treated by carrying out conjuctivodacryocystorhinostomy mainly through skin or the nasal cavity, but all sorts of defects attendant on an operation have been indicated. At this, the authors inquired into a result of a surgery and their satisfaction in a different viewpoint for silicone intubation. METHODS: We inquired into a result of a surgery and their satisfaction in a different viewpoint for 68 patients' 72 eyes who can be observed over 3 months among patients diagnosed as canalicular or common canalicular obstruction and operated on with silicone intubation as subject. RESULTS: After surgery, silicone tube was removed at average postoperative 5.8 months and we observed them for average 10.5 months. The result of operations showed that successful cases are 72.2% (52 eyes) and failing cases are 28.8% (20 eyes). CONCLUSION: For the cases with canalicular obstruction, especially common canalicular obstruction for short period, primary silicone intubation would be one of the ideal lacrimal surgery that should be explained the possible secondary conjuctivodacryocystorhinostomy later.

Clinical Evaluation of Chestnut Bur Injuries to the Eye

The authors reviewed the chart of 37 patients who had chestnut bur injury to the eye from September 1997 to November 1998.Their ages were ranged from 4 to 69 years old and they 33 men (89.2%)and 4 women (10.8%).They were injured by chestnut bur on cornea (33 eyes), sclera (1 eye), cornea and sclera (2 eyes), cornea and periorbital tissue (2 eyes). Chestnut burs were removed from 28 eyes at Out Patient Department (75.7%)and from 9 eyes with surgical microscope in operating room (24.3%).At OPD, simple removals without leaking were performed in 21 eyes (56.8%)and leaking occurred in 7 eyes (18.9%).Among 7 eyes (18.9%), primary repairs were performed in 2 eyes (5.4%), therapeutic contact lens were worn in 3 eyes (8.1%), chemical tissue glue was used in 1 eye (2.7%) and a pressure patch was used in 1 eye (2.7%). At operating room, simple removals were performed in 3 eyes (8.1%)and leaking occurred in 6 eyes (16.2%).Among 6 eyes (16.2%), primary repairs were performed in 4 eyes (10.8%)and therapeutic contact lens were in 2 As complications, traumatic cataract, iritis, endophthalmitis, cornealulcers and scleral granuloma were developed in 8 eyes (21.6%), 12 eyes (32.4%), 1 eye (2.7%), 1 eye (2.7%)and 3 eyes (8.1%)respectively. In conclusion, the prompt &proper management of chestnut bur injury and the importance of prevention &public information should be stressed.