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Orbital CT may help predict visual outcomes in patients with orbital compartment syndrome
Ophthal Plast Reconstr Surg. 2011;doi:10.1097/IOP.0b013e31822672c4.
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Orbital CT may be effective in evaluating key parameters and predicting visual outcomes in patients with orbital compartment syndrome, a study found.
"Hopefully, the data can help select patients that may benefit from more aggressive intervention and will ultimately result in superior visual outcomes," the study authors said.
The retrospective study included patients with a diagnosis of orbital cellulitis or orbital hematoma. Eleven patients had normal vision of 20/30 or better. Four patients had vision loss, with vision of counting fingers or worse.
Patients with pre-existing vision loss, lack of CT images or no 1-month visual acuity data were excluded.
Among normal vision patients, average stretch angle measurement was 28.9° in the uninvolved eye and 28.5° in the involved eye, an average difference of 0.41°. Among vision loss patients, average stretch angle measurement was 32.3° in the uninvolved eye and 21.1° in the involved eye, an average difference of 11.2°.
The difference in stretch angle between the vision loss group and the normal vision group was statistically significant (P < .001).
"This indicates that the difference in stretch angle between the eyes is a significant predictor of vision loss," the authors said.
A longer orbit was also associated with vision loss, they said.