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  • Title: Does blunt ocular trauma induce corneal astigmatism?
    Author: Akinci A, Ileri D, Polat S, Can C, Zilelioglu O.
    Journal: Cornea; 2007 Jun; 26(5):539-42. PubMed ID: 17525647.
    Abstract:
    PURPOSE: To determine the effect of blunt ocular trauma on refractive astigmatism. METHODS: Eighty-six eyes of 86 patients with known previous refractive status exposed to blunt ocular trauma were included in the study. Trauma-induced astigmatism (TIA) was calculated using vector analysis. In eyes with TIA, central corneal thickness was assessed by ultrasound pachymetry, and corneal topographies were obtained. Anterior-chamber angles were examined by Goldmann 3-mirror lens to find microhemorrhages, scarring, or recession. Patients were followed up between 8 and 12 months (average, 9.2 months). RESULTS: In 18 eyes (21%), TIA was detected. Six (7%) of these eyes had lenticular astigmatism caused by traumatic lens subluxation. In the remaining 12 eyes (14%), corneal topography showed regular astigmatic patterns, which were symmetrical in 3 eyes and asymmetric in the remaining 9. The etiologic factor was a game marble in 6 eyes and a stone in the remaining 6. The mean central corneal thickness was 535.75 microm (range, 498-570 microm) in these 12 eyes. In 9 of these 12 eyes, recession or scarring in the anterior-chamber angle was detected at 1 edge of the steepest axis. CONCLUSIONS: Blunt trauma can induce astigmatism. Hard and small objects are more likely to induce astigmatism.
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