Changes in anterior chamber depth due to contusion.
OBJECTIVE
We aimed to investigate changes in anterior chamber depth (ACD) prospectively in patients with recent unilateral contusion but no signs of angle recession, using a scanning peripheral anterior chamber depth analyzer (SPAC).


METHODS
Among patients whose chief complaint was recent unilateral contusion and who showed no signs of angle recession by gonioscopy in 2006 and 2007, those who satisfied the following criteria were subjected to SPAC evaluation of ACD from the central to the peripheral region: no history of ocular diseases or ocular surgery including laser treatment, and similar refractory error in both eyes before trauma.


RESULTS
Thirty-seven patients satisfied the criteria (29 males, 8 females; age: 28.6 +/- 23.5 years). Fourteen patients presented with commotio retinae. Fifteen showed no ocular manifestations related to the contusion. The mean SPAC-determined ACD grades of contused and noncontused eyes were 10.7 +/- 1.6 and 9.8 +/- 2.1, respectively, demonstrating that the contused eyes had significantly larger ACD values than the noncontused ones (p = 0.0005). The contused eyes had larger ACD values in both the central and the peripheral regions. The difference in ACD between the contused and noncontused eyes tended to increase with greater distance from the center. The equivalent refractive errors were -2.3 +/- 2.2 and -1.7 +/- 2.1 dpt, respectively (p = 0.004). There were no significant differences in best-corrected visual acuity and intraocular pressure between the contused and the noncontused eyes.


CONCLUSIONS
Contusion may increase ACD particularly in the peripheral region even in patients who have no apparent manifestations in the anterior ocular segment.
Kashiwagi
Kenji
K
Department of Ophthalmology, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan. kenjik@yamanashi.ac.jp
Tateno
Yasushi
Y
Kashiwagi
Fumiko
F
Tsukahara
Shigeo
S
D000328:Adult; D000867:Anterior Chamber / Q000293:injuries* / Q000473:pathology*; D002648:Child; D003288:Contusions / Q000150:complications* / Q000503:physiopathology; D005131:Eye Injuries / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006068:Gonioscopy; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology; D008297:Male; D011446:Prospective Studies; D014792:Visual Acuity / Q000502:physiology; D014949:Wounds, Nonpenetrating / Q000209:etiology* / Q000503:physiopathology