J Korean Ophthalmol Soc.  2008 Sep;49(9):1501-1506.

Change of Intraocular Pressure in Trabecular Meshwork Rupture Associated with Traumatic Hyphema

• Lim HW
• Ko MK

Abstract

PURPOSE
To report the relationship between the extent of rupture of the trabecular meshwork and intraocular pressure changes in traumatic hyphema patients. METHODS: Ninety-five trabecular meshwork rupture patients were selected from a group of traumatic hyphema patients. Identification and measurement of the rupture of the trabecular meshwork were performed by gonioscopy, and intraocular pressure was measured by Goldmann applanation tonometry until 3 months after the trauma.
RESULTS
There were statistically significant differences of IOP between the traumatic eyes and the contralateral eyes at day 2, 3, 5, and 1 month (p=0.000, 0.018, 0.001, 0.040, respectively). IOP was highest at the 2nd day post-trauma, and dropped by the 5th day, after which it rose slightly. The relationship between the extent of trabecular meshwork rupture and the difference of IOP was positive at the 2nd day post-trauma (r=0.259) and negative at the 6th day post-trauma (r=-0.296); these differences are statistically significant (p=0.020, p=0.041, respectively).
CONCLUSIONS
A rupture of the trabecular meshwork can be measured using gonioscopy, and the change of IOP in a trabecular meshwork rupture increases as the extent of the rupture of the trabecular meshwork increases.

Keyword

Hyphema; Intraocular pressure; Rupture of trabecular meshwork

MeSH Terms

Eye
Gonioscopy
Humans
Hyphema
Intraocular Pressure
Manometry
Rupture
Trabecular Meshwork

Figure

• 

  Figure 1. Goldmann 3-mirror contact goniolens photograph. (A) Note the circumferentially full thickness trabecular meshwork rupture (arrowhead). Angle recession (deep tear into ciliary body) also present. (B) Uveal meshwork rupture combined with angle recession (arrowhead) is seen in the inferior view.

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  Figure 2. Serial change of mean IOP after blunt trauma; * p-value<0.05 by One-sample T-test.

Reference

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