J Korean Ophthalmol Soc.  2015 Feb;56(2):162-167. 10.3341/jkos.2015.56.2.162.

Comparison of Diplopia and Ocular Torsion Rate in Blow-Out Fracture Patients

• Kim KL
• Park SP
• Kim HK

• KMID: 2215997
• DOI: http://doi.org/10.3341/jkos.2015.56.2.162

Abstract

PURPOSE
We compared ocular torsion rates in blow-out fracture patients before and after blowout fracture repair by analyzing mean disc foveal angles.
METHODS
The study participants were divided into 2 groups: blow-out fracutre repair patients (n = 36) and controls (n = 36). We measured ocular torsion rates by analyzing mean disc foveal angle. The angle was composed of 2 imaginary horizontal lines which crossed the optic disc center and fovea. We compared statistically ocular torsion rates in blow-out fracture patients based on subsided diplopia, continued diplopia, or absence of diplopia before and after blow-out fracture repair using paired t-test.
RESULTS
In the patient group, ocular torsion rates were statistically significantly decreased. In the blow-out fracture repair group with subsided diplopia, ocular torsion rates were decreased statistically from 7.74 +/- 3.48 degrees before blow-out fracture repair to 5.02 +/- 3.11 degrees after blow-out fracture repair. In the blow-out fracture repair group with continued diplopia or absence of diplopia before surgery, ocular torsion rates did not change statistically significantly from 6.36 +/- 2.80 degrees before blow-out fracture repair to 6.51 +/- 3.24 degrees after blow-out fracture repair.
CONCLUSIONS
Subsided diplopia after blow-out fracture repair and ocular torsion rate changes were significantly related in blow-out fracture patients. Further research which on the correlation of intraorbital change and movement of orbital position after blow-out fracture repair with ocular torsion rates are necessary.

Keyword

Blow-out fracture; Cyclotropia; Diplopia; Disc foveal angle; Ocular torsion

MeSH Terms

Diplopia*
Humans
Orbit
Orbital Fractures*

Figure

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  Figure 1. Schematic picture of the discfoveal angle.

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  Figure 2. 1: The patients who had blow out fracture of the inferior wall complained of moderate degree diplopia. Before the operation, 12.7 degree of disc foveal angle was observed on fundus photographs. Almost 10 degrees of extorsion was checked with double moddox rod test. Six months after the operation, the patients did not complain of diplopia. 4.3 degree of disc foveal angle was observed on fundus photographs No extorstion and intorsion were checked with double moddox rod test. 2: The patients who had blow out fracture of the inferior wall complained of moderate degree diplopia. Before the operation, 11.2 degree of disc foveal angle was observed on fundus photographs. Almost 6 degrees of extorsion was checked with double moddox rod test. Six months after the operation, the patients did not complain of diplopia. 6.2 degree of disc foveal angle was observed at the fundus photograph. No extorstion and intorsion were checked with double moddox rod test. 3: The patients who had blow out fracture of the inferior wall complained of moderate degree diplopia. Before the operation, 9.6 degree of disc foveal angle was observed on fundus photographs. Almost 5 degree of extorsion was checked with double moddox rod test. 6 months after the operation, the patients did not complain of diplopia. 4.1 degree of disc foveal angle was observed at the fundus photograph. No extorstion and intorsion were checked with double moddox rod test.

Reference

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