Abstract
To measure the increase in orbital volume expansion effected by surgical placement of a lateral rim implant. Computed tomography was used to obtain 1-mm axial sections of a normal human cadaver skull. A computer program was used to measure the orbital area of each section and integrate the sum of the areas to obtain the total orbital volume. Following placement of a lateral orbital rim implant, this procedure was repeated to obtain the new orbital volume. The orbital volume increased from 22.2 cm3 to 23.6 cm3 (an increase of 6%) following placement of the lateral orbital rim implant. Surgical placement of a lateral orbital rim implant can be an effective method of orbital volume expansion in dysthyroid ophthalmopathy.
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