Correlation Between Ocular Motility and Evaluation of Computed Tomography in Orbital Blowout Fracture

Purpoe To invetigate outcome of management of blowout fracture patient evaluating computed tomography (CT) finding and diplopia. Deign ingle-center retropective interventional conecutive cae erie. Method Thi tudy included 113 cae of pure blowout orbital fracture with diplopia. We invetigated patient’ atifaction baed on percentage of He area ratio (HAR%) on the He chart, evaluating fracture type and number of point of contact of extraocular mucle to the fracture edge (point of mucle contact) baed on CT. Reult Of the patient with HAR% > 85%, mot experienced no diplopia. ixty-two (55%) of 113 patient underwent urgical repair to improve diplopia, and 31 (50%) of 62 patient had urgery within three day after injury. A favorable outcome with HAR% > 85% wa een in 81 (72%) of 113 patient. Of 32 patient with two point of mucle contact at one extraocular mucle, 15 patient (47%) improved with a final HAR% > 85%. None of the four patient with medial wall fracture and two point of mucle contact had improved in their final HAR% > 85%. Thirty (97%) of 31 patient with either floor or medial wall fracture and no mucle involvement had a favorable outcome regardle of fracture type. Initial CT finding of the rectu mucle wa trongly correlated with a mean initial HAR% (r = −0.94) and a mean final HAR% (r = −0.87). Concluion The clinical manifetation and prognoi of patient were approximately predicted through the analyi of CT on fracture type and number of point of contact of an extraocular mucle to the fracture edge.