AIM: To investigate the curative effects and advantages of transconjunctival approach operation to treat orbital blowout fracture.

METHODS: Totally, 46 cases(46 eyes)with fracture on inner and lower orbit wall were treated with transconjunctival approach operation, and the methods and effects were retrospectively analyzed.

RESULTS: All patients had no significant vision loss postoperatively. Among 31 diplopic cases, 12 months after operation, 3 cases existed diplopia with extreme upward and temporal rotation. Among 23 patients with enophthalmos, 3-12 months after operation, 15 patients showed protrusion difference between two eyes less than 2.0mm, and the vision of the operative eye was more than 2.0mm lower than that of the healthy eye in 8 patients. All patients had no visible operative scar and lateral canthus deformity.

CONCLUSION: Transconjunctival operation for treating orbital blowout fracture is safe, reliable and simple, with few complications and no facial scar.