Intraocular Pressure as an Index of Ocular Injury in Orbital Fractures

1989 ◽  
Vol 115 (2) ◽  
pp. 213-216 ◽  
Author(s):  
H. Alexander Arts ◽  
D. W. Eisele ◽  
L. G. Duckert
2009 ◽  
Vol 25 (4) ◽  
pp. 306-308 ◽  
Author(s):  
Peter A. Mellema ◽  
Mohit A. Dewan ◽  
Michael S. Lee ◽  
Scott D. Smith ◽  
Andrew R. Harrison

2017 ◽  
Vol 52 (5) ◽  
pp. 499-502 ◽  
Author(s):  
Michael Ross ◽  
Christian El-Haddad ◽  
Jean Deschênes

2015 ◽  
Vol 8 (4) ◽  
pp. 345-347
Author(s):  
John Collin ◽  
Farid Afshar ◽  
Steven Thomas

Orbital emphysema is commonly associated with fractures of the orbital floor or medial wall. The air often dissipates spontaneously, but rarely can cause increased intraocular pressure and even loss of vision. Entrapment of the extraocular muscles can also occur with orbital fractures and may require prompt treatment in the pediatric patient due to the risk muscle ischemia. Both conditions can cause diplopia due to restriction of eye movement and differentiation of the two etiologies is important to prevent unnecessary surgical exploration. Identification and prompt management of raised intraocular pressure is essential in patients with orbital trauma. We present a case of orbital emphysema mimicking inferior rectus entrapment following trauma in an 11-year-old boy.


2017 ◽  
Vol 139 (8) ◽  
Author(s):  
Bahram Notghi ◽  
Rajneesh Bhardwaj ◽  
Shantanu Bailoor ◽  
Kimberly A. Thompson ◽  
Ashley A. Weaver ◽  
...  

Ocular trauma is one of the most common types of combat injuries resulting from the exposure of military personnel with improvised explosive devices. The injury mechanism associated with the primary blast wave is poorly understood. We employed a three-dimensional computational model, which included the main internal ocular structures of the eye, spatially varying thickness of the cornea-scleral shell, and nonlinear tissue properties, to calculate the intraocular pressure and stress state of the eye wall and internal ocular structure caused by the blast. The intraocular pressure and stress magnitudes were applied to estimate the injury risk using existing models for blunt impact and blast loading. The simulation results demonstrated that blast loading can induce significant stresses in the different components of the eyes that correlate with observed primary blast injuries in animal studies. Different injury models produced widely different injury risk predictions, which highlights the need for experimental studies evaluating mechanical and functional damage to the ocular structures caused by the blast loading.


2014 ◽  
Vol 72 (8) ◽  
pp. 1533-1540 ◽  
Author(s):  
Zachary S. Peacock ◽  
Toufic Boulos ◽  
John B. Miller ◽  
Matthew F. Gardiner ◽  
Sung-Kiang Chuang ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Christopher J. Layton

Purpose.To determine factors associated with the presence of significant ocular injury in subjects with orbital fractures.Subjects.A consecutive prospective cohort of 161 patients presenting to a general tertiary referral hospital with orbital fractures and undergoing initial conservative treatment was identified. Subjects were assessed at time of injury for the need for emergency surgery, and those initially treated conservatively were subsequently followed up by the Ophthalmology Department to assess for ocular injury requiring ophthalmic management at 1–7 days after injury. Associations between ocular injury and age, sex, visual acuity, presence of blowout fracture, extent of orbital involvement, and presence of distant facial fractures were assessed.Results.142 male (average age of 32 [95% CI 30–35]) and 19 female (average age of 49 [95% CI 39–59]) subjects were identified. 17 subjects were diagnosed with significant ocular injury. Ocular injury was significantly associated with LogMAR VA worse than 0.2 (OR 49 [95% CI 11–217,P<0.0001]), but no relationship was noted for age, sex, presence of blowout fracture, extent of fractures, or presence of distal facial fractures. LogMAR visual acuity worse than or equal to 0.2 had a 98% negative predictive value for ocular injury in the setting of orbital fractures.Conclusions.Demographic and nonophthalmic fracture characteristics were not useful predictors of ocular injury in orbital fractures. LogMAR visual acuity worse than or equal to 0.2 is a highly sensitive and useful guide of the need for ophthalmic referral in subjects with orbital fractures.


2011 ◽  
Vol 4 (3) ◽  
pp. 121-128 ◽  
Author(s):  
Craig Birgfeld ◽  
Joseph Gruss

Patients who sustain facial fractures frequently suffer from visual disturbance. Additionally, orbital fractures often involve ocular injury, which, not infrequently, may require enucleation. Yet an anophthalmic orbit does not obviate the need for aggressive orbital fracture treatment. In fact, treatment of the sequelae of the anophthalmic orbit can be difficult and require multiple surgeries. Intraoperative use of a conformer after accurate bony reduction and orbital reconstruction with bone grafts or orbital implants are essential steps to allow for prosthetic rehabilitation of the anophthalmic orbit.


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