Orbital volume expansion of dysthyroid ophthalmopathy by surgical placement of lateral rim implants: a case study.
OBJECTIVE
To measure the increase in orbital volume expansion effected by surgical placement of a lateral rim implant.


METHODS
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.


RESULTS
The orbital volume increased from 22.2 cm3 to 23.6 cm3 (an increase of 6%) following placement of the lateral orbital rim implant.


CONCLUSIONS
Surgical placement of a lateral orbital rim implant can be an effective method of orbital volume expansion in dysthyroid ophthalmopathy.
Bersani
T
T
Department of Ophthalmology, SUNY Health Science Center at Syracuse, New York, USA.
Jian-Seyed-Ahmadi
A
A
D002102:Cadaver; D006111:Graves Disease / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D006801:Humans; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D009915:Orbit / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D020959:Polyethylene; D019919:Prosthesis Implantation; D015625:Tissue Expansion Devices; D014057:Tomography, X-Ray Computed
D020959:Polyethylene