Orbital Floor Fracture (Blowout)MANAGEMENT

OPHTHALMOLOGIC PRESENTATIONS · 12 SECTIONS

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526 items

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Cardiovascular Presentations71▾

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Pediatric-Specific Presentations19▾

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Acute angle-closure glaucoma Central retinal artery occlusion Central Retinal Vein Occlusion Chemical eye injury Corneal abrasion Corneal ulcer Endophthalmitis Globe rupture Herpes zoster ophthalmicus Hyphema Iritis-Uveitis Ocular foreign body Optic Neuritis Orbital cellulitis Orbital Floor Fracture (Blowout)Posterior vitreous detachment Retinal detachment Retrobulbar hematoma and orbital compartment syndrome Vitreous Hemorrhage

Obstetric Presentations23▾

Systemic and Miscellaneous Presentations17▾

01Approach to the Critical Patient/attcp34

Immediate threats requiring emergent action

›Orbital compartment syndrome

›Proptosis with tense orbit

›Vision loss or rapidly declining visual acuity

›Afferent pupillary defect

›IOP > 40 mmHg

›Perform lateral canthotomy and cantholysis immediately

›Do not delay for imaging

›Time to decompression is vision-critical

›Globe rupture

›Irregular or peaked pupil

›Shallow anterior chamber

›Hyphema

›Shield eye without applying pressure

›No tonometry

›Emergent ophthalmology consult

›Oculocardiac reflex with hemodynamic instability

›Bradycardia triggered by EOM testing or entrapment

›Sinus bradycardia, AV block, or junctional rhythm

›Continuous cardiac monitoring

›Atropine 0.5 mg IV for symptomatic bradycardia

›Glycopyrrolate 0.2 mg IV as alternative

Stabilization and monitoring

›Monitoring bundle

›Continuous cardiac monitoring if oculocardiac reflex elicited

›Serial visual acuity checks every 30 minutes if orbit at risk

›IOP monitoring if orbital compartment syndrome suspected

›Key branching points

02History/hx44

Mechanism and symptom onset

›Mechanism of injury

›Direct blunt trauma to orbit or periorbital region

›Assault, sports projectile (baseball, tennis ball, elbow), MVA, falls

›Barotrauma via nose blowing in rare cases

›Classic symptom triad

›Diplopia, especially on upgaze

›Infraorbital numbness in V2 distribution (cheek, upper lip, upper teeth)

›Sunken appearance of eye (enophthalmos)

›Symptom timing

›Diplopia and restricted gaze typically immediate

›Enophthalmos may develop acutely or over days as edema resolves

Alarm symptoms

›Oculocardiac reflex indicators

›Nausea and vomiting

›Syncope or presyncope

›Bradycardia during or after injury

›Especially significant in children with trapdoor fractures

›Vision-threatening symptoms

›New or worsening vision loss

›Flashing lights or floaters (retinal injury)

›Severe eye pain

Associated and contextual history

›Associated injuries

›Epistaxis

›Clear rhinorrhea (CSF leak if orbital roof involved)

›Malocclusion (ZMC fracture involvement)

›Neck pain or cervical spine symptoms

03Physical Exam/exam46

Visual and pupillary assessment

›Visual acuity

›Mandatory documentation before any intervention

›Each eye tested individually

›Pupillary exam

›Afferent pupillary defect via swinging flashlight test

›APD indicates traumatic optic neuropathy or orbital compartment syndrome

›IOP measurement

›Elevated IOP in orbital compartment syndrome

›IOP > 30 to 40 mmHg warrants intervention

Motility and entrapment assessment

›Extraocular movements

›Restriction of upgaze is classic for inferior rectus entrapment

›All cardinal positions tested

›Diplopia on upgaze strongly associated with floor fractures

›Forced duction test

›Gold standard for differentiating mechanical entrapment from paresis

›Positive when passive globe movement is restricted

›Oculocardiac reflex elicitation

›Monitor heart rate during EOM testing

›Bradycardia on upgaze attempt indicates entrapment

External and periorbital exam

›Inspection findings

›Periorbital ecchymosis and edema

›Subcutaneous emphysema (crepitus)

›Enophthalmos or hypoglobus

›Facial asymmetry

›Minimal external signs in white-eyed blowout (children)

04Differential Diagnosis/ddx41

Life-threatening orbital emergencies

›Orbital compartment syndrome

›ICD-10 S05.90XA

›Retrobulbar hematoma most common cause

›Proptosis, APD, elevated IOP, ophthalmoplegia

›Globe rupture

›ICD-10 S05.20XA

›Irregular pupil, shallow anterior chamber, hyphema

›Do not apply pressure to eye

›Traumatic optic neuropathy

›ICD-10 S04.01XA

›Vision loss with APD, may occur without fracture

›Associated with lateral and superior wall fractures

Orbital and midface fracture spectrum

›Zygomaticomaxillary complex (ZMC) fracture

›ICD-10 S02.400A

›Disrupted orbital rim, trismus, malar flattening

›Impure blowout with rim involvement

›Le Fort II or III fracture

›ICD-10 S02.411A or S02.412A

›Midface mobility, malocclusion, CSF leak

›Nasoethmoidal complex fracture

›Telecanthus and epistaxis

›Medial wall involvement

›Orbital roof fracture

›More common in children under 3 years

›Consider intracranial extension

›Medial wall blowout fracture

05Laboratory Tests/lt16

Standard trauma labs

›General trauma panel

›Complete blood count if significant hemorrhage or polytrauma

›Coagulation studies (PT, INR) if on anticoagulants

›Anti-Xa levels if on direct oral anticoagulants

›Type and screen if significant hemorrhage anticipated

›Pre-operative labs if surgical repair anticipated

›Electrolytes and renal function

›Liver function tests

›Group and screen

Targeted adjuncts

›Labs generally not required for isolated orbital floor fractures

›Clinical and imaging assessment primary

›Labs guided by comorbidities and mechanism severity

›ECG indications

›Bradycardia, syncope, nausea and vomiting suggesting oculocardiac reflex

›Findings: sinus bradycardia, AV block, junctional rhythm

›Reflex triggered via trigeminal-vagal arc (V1 afferent, vagus efferent)

06Diagnostic Tests/dt72

Scoring Systems

›Surgical urgency stratification

›Emergent (immediate surgery)

›Orbital compartment syndrome

›Globe rupture

›Nonresolving oculocardiac reflex with entrapment

›Urgent repair within 24 to 48 hours

›White-eyed blowout fracture with entrapment in children

›Surgical repair within 24 hours significantly improves motility outcomes in pediatric entrapment

›Urgent repair within 2 weeks

›Symptomatic diplopia with positive forced ductions or CT-confirmed entrapment

›Large floor fractures (> 50% of orbital floor)

›Early enophthalmos > 2 mm or hypoglobus

›Progressive infraorbital hypoesthesia

›Observation appropriate

›Minimal diplopia not in primary gaze or downgaze

›Good motility without entrapment

›No significant enophthalmos

›CT measurement predictors of surgical need

›Fracture involving > 50% of orbital floor associated with enophthalmos

›Fracture area > 2 cm associated with enophthalmos

›Cranial-caudal discrepancy > 0.8 cm predictive of repair requirement

MRI

›MRI orbital role

›Not first-line for orbital floor fractures

›CT remains gold standard for bone detail

›MRI inferior for fracture characterization

›Problem-solving indications

07Disposition/dispo29

Admission indications

›Mandatory admission criteria

›Orbital compartment syndrome (post-canthotomy, awaiting definitive surgery)

›Nonresolving oculocardiac reflex with hemodynamic instability

›Concurrent significant ocular injury

›Globe rupture

›Retinal detachment

›Polytrauma requiring inpatient management

›Pediatric trapdoor fracture with entrapment awaiting urgent operative repair

›Observation indications

›Borderline motility restriction with equivocal entrapment on CT

›Serial exams over hours

›Persistent nausea and vomiting concerning for evolving oculocardiac reflex

Discharge criteria and follow-up

›Discharge criteria

›Stable visual acuity without change

›No afferent pupillary defect

›No evidence of entrapment or oculocardiac reflex

›Minimal or improving diplopia

›No signs of orbital compartment syndrome

›Reliable follow-up arranged within 1 to 2 weeks

›Follow-up plan

›Ophthalmology or oculoplastics within 1 to 2 weeks

›OMFS or ENT if surgical criteria met

›Earlier review if symptoms worsen

›Hertel measurement at follow-up to track enophthalmos

Transfer considerations

›Transfer triggers

08Treatment/t82

Emergent: lateral canthotomy and cantholysis

›Indications

›Orbital compartment syndrome with clinical evidence

›APD plus elevated IOP

›Vision loss plus tense proptosis

›Time-critical: do not delay for imaging when diagnosis clinical

›Procedure

›Lateral canthotomy

›Local anaesthetic to lateral canthus

›Straight clamp across lateral canthus for 60 seconds

›Full-thickness cut through clamped tissue laterally

›Inferior cantholysis

›Cut inferior crus of lateral canthal tendon

›Confirm release by gentle inferior displacement of lower lid

›Globe should decompress with reduction in IOP

›Post-procedure

›Recheck IOP after 30 minutes

›If IOP remains elevated, perform superior cantholysis

›Success rate for vision preservation approximately 75 to 85% when performed promptly

Emergent: oculocardiac reflex management

›Immediate steps

›Cessation of ocular or orbital manipulation

›Continuous cardiac monitoring

›Atropine 0.5 mg IV for symptomatic bradycardia

›Repeat every 3 to 5 minutes to maximum 3 mg

›Glycopyrrolate 0.2 mg IV as alternative anticholinergic

›If cardiac arrest from reflex, standard ACLS

›Surgical urgency

›Muscle entrapment causing oculocardiac reflex requires emergent surgical release

›Particularly in children with trapdoor fractures

Analgesic and anti-inflammatory therapy

›Analgesia

›Acetaminophen 500 to 1000 mg PO or IV every 6 hours as first-line

›NSAIDs (ibuprofen 400 mg PO every 6 to 8 hours) as adjunct

›Avoid acutely if retrobulbar hemorrhage risk

›Avoid aspirin acutely due to antiplatelet effect

›Opioids for severe pain as rescue

›Oxycodone 5 mg PO every 4 to 6 hours PRN

›Antiemetics

›Ondansetron 4 mg IV or PO for nausea

›Especially when oculocardiac reflex suspected

›Metoclopramide 10 mg IV as alternative

›Corticosteroids

›May reduce orbital edema (weak recommendation, low-quality evidence)

›Methylprednisolone 1 mg/kg PO or IV for 3 to 5 days if used

›Not routinely recommended; individualize decision

Nasal and sinus management

›Nasal precautions

›Strict instruction to avoid nose blowing

›Nose blowing forces air into orbit causing emphysema and infection risk

›Sneeze with mouth open

›Nasal decongestant spray

›Oxymetazoline 0.05% 2 sprays each nostril twice daily for maximum 3 to 5 days

›Xylometazoline as alternative

›Elevation

›Head of bed elevation 30 to 45 degrees to reduce orbital edema

›Ice packs to periorbital area for first 48 hours

Antibiotic therapy

›Prophylactic antibiotics

›Not recommended for closed nonoperative orbital fractures per AAST consensus

›Orbital cellulitis is rare (approximately 0.8% of cases)

›Prophylaxis does not reduce infection rate in nonoperative fractures

›Antibiotic indications

›Concurrent sinusitis or orbital cellulitis

›Open or contaminated fracture

›Pre-operative prophylaxis per surgical team protocol

›Antibiotic regimens if indicated

›Amoxicillin-clavulanate 875 mg PO every 12 hours for 5 to 7 days

›Clindamycin 300 mg PO every 6 hours for penicillin allergy

›IV ampicillin-sulbactam 3 g IV every 6 hours for hospitalized patients with concurrent infection

Surgical repair

›Emergent repair indications (same admission)

›Trapdoor fracture with confirmed muscle entrapment especially in children

›Repair within 24 hours produces significantly better motility outcomes

›Nonresolving oculocardiac reflex due to entrapment

›Early repair indications (within 2 weeks)

›Symptomatic diplopia with CT-confirmed entrapment or positive forced ductions

›Fracture involving > 50% of orbital floor

›Early enophthalmos > 2 mm or hypoglobus

›Progressive infraorbital hypoesthesia

›Surgical approach options

›Transconjunctival approach (most common, minimal external scar)

›Subciliary or subtarsal approach

›Endoscopic transnasal approach for selected medial wall fractures

›Implant materials

›Titanium mesh for large floor defects

›Porous polyethylene for smaller defects

›Resorbable plates in pediatric patients

09Special Populations/sp58

Pregnancy

›Imaging considerations

›CT maxillofacial with lead shielding when clinically indicated

›Fetal radiation dose from maxillofacial CT is very low (< 0.01 mGy)

›Benefit of diagnosis outweighs fetal radiation risk when fracture suspected

›MRI as alternative if CT can be deferred and clinical picture allows

›Avoid gadolinium contrast in first trimester unless essential

›Medication safety

›Acetaminophen preferred analgesic throughout pregnancy

›NSAIDs: avoid after 20 weeks gestation (risk of premature ductus arteriosus closure)

›Ondansetron for antiemetic use: caution in first trimester

›Corticosteroids: use with caution; brief course acceptable if needed

›Atropine: acceptable for oculocardiac reflex emergency treatment

›Surgical considerations

›Non-emergency orbital repair should be deferred until post-partum when possible

›If urgent repair required, anaesthesia team involvement essential

›Fetal monitoring during any anaesthesia after viability

Geriatric

›Fracture pattern differences

›More comminuted and open fractures due to less elastic bone

›Less muscle entrapment but larger defects

›Greater risk of late enophthalmos as orbital fat atrophies

›Medication considerations

›Higher prevalence of anticoagulant use

›INR and anti-Xa assessment before any procedure

›Reversal agent discussion with medical team if urgent surgery

›Analgesics with caution

›NSAIDs risk of renal impairment, GI bleeding

10Background/b59

Epidemiology

›Incidence and demographics

›Male to female ratio approximately 2:1

›Peak incidence in young adult males

›Assault and MVA are leading causes followed by sports and falls

›Sports-related fractures most common in baseball, racquetball, hockey, and tennis

›Burden of disease

›Serious ocular injury present in approximately 24% of blowout fracture cases

›Orbital cellulitis complicates approximately 0.8% of cases

›Late enophthalmos may develop as orbital edema resolves and fat atrophies

›Missed diagnosis

›White-eyed blowout fracture missed in up to 40% of children

›Oculocardiac reflex underrecognized as indicator of entrapment

›Minimal external signs mislead clinicians in pediatric trapdoor fractures

›Outcomes data

›Approximately 85% of pediatric patients recover full motility after timely surgical repair

›Approximately 63% of adults are diplopia-free after repair

›Early repair (< 2 weeks) associated with better diplopia and enophthalmos outcomes

Pathophysiology

›Fracture mechanism theories

›Hydraulic theory

›Blunt force increases intraorbital pressure

›Pressure transmitted to thin floor (lamina papyracea) causing blowout

›Most widely accepted mechanism

›Buckling theory

›Direct force transmitted along orbital rim to floor

›Floor buckles under mechanical stress

›Most injuries involve both mechanisms

›Anatomical basis

›Orbital floor formed by maxillary, zygomatic, and palatine bones

›Thinnest region overlies maxillary sinus (0.5 to 1 mm thickness)

›Infraorbital nerve runs in canal along orbital floor (explains V2 hypoesthesia)

›Inferior rectus muscle and fat herniate through floor into maxillary sinus

›Entrapment mechanism

›In adults: fat and soft tissue herniate through large fracture defect

›In children: trapdoor hinge effect traps inferior rectus within fracture

›Entrapped muscle compresses (ishaemia risk) and restricts upgaze

›Traction on trapped muscle activates oculocardiac reflex via trigeminal-vagal arc

›Orbital compartment syndrome

›Retrobulbar hemorrhage accumulates in closed bony compartment

›IOP rises, compresses central retinal artery

›Ischaemic optic neuropathy and vision loss within 90 to 120 minutes if untreated

Therapeutic Considerations

›Evidence base for surgical timing

›Pediatric trapdoor entrapment: repair within 24 hours improves outcomes (Class II evidence)

›Adult fractures: early repair within 2 weeks recommended for symptomatic cases

›National surgical analysis shows early repair (< 2 weeks) associated with better visual function restoration

›Antibiotic prophylaxis evidence

›AAST consensus: prophylactic antibiotics not recommended for closed nonoperative orbital fractures

›Orbital cellulitis rate approximately 0.8%, not reduced by prophylaxis

›Antibiotics increase resistance and adverse effects without benefit in uncomplicated cases

›Lateral canthotomy evidence

›Success rate for IOP reduction approximately 75 to 85% when performed promptly

›Time to decompression is critical: ischaemic damage begins within 90 to 120 minutes

›Technique training gap identified: many emergency physicians undertrained in procedure

›ICD-10 classification

›S02.3XXA: fracture of orbital floor, initial encounter

›S02.40XA: fracture of malar, maxillary, and zygoma bones, initial encounter

›S05.90XA: unspecified injury of eye and orbit, initial encounter

›SNOMED CT

›Blowout fracture of orbit (disorder)

›Fracture of orbital floor (disorder)

11Patient Discharge Instructions/pdi25

copy discharge instructions

›Orbital floor fracture home care

›Do not blow your nose until cleared by your specialist (this can force air into your eye socket causing infection and worsening swelling)

›Sneeze with your mouth open

›Apply ice packs gently around the eye for 20 minutes at a time for the first 2 days

›Sleep with your head elevated on two pillows to reduce swelling

›Avoid bending over, heavy lifting, or straining

›Avoid contact sports and strenuous activity until cleared

›Soft diet if you have pain with chewing

›Take pain medications as prescribed (acetaminophen, ibuprofen unless told otherwise)

›What to expect during recovery

›Double vision and swelling often improve over 1 to 2 weeks as edema resolves

›Numbness of the cheek, upper lip, or upper teeth may take weeks to months to resolve

›Some numbness may be permanent in a small number of cases

›If surgery is planned, your specialist will contact you with a date

›Return to emergency department immediately if

›New or worsening vision loss in either eye

›Increasing eye pain, swelling, or the eye appearing to bulge more

›Worsening or new double vision

›Fever above 38.5 degrees Celsius or increasing redness and swelling around the eye (signs of infection)

›Nausea, vomiting, dizziness, or fainting

›Slow heart rate or feeling your heart skipping beats

›Follow-up instructions

›Follow up with ophthalmology or your specialist within 1 to 2 weeks

›Return sooner if any symptoms worsen before that appointment

›Bring a list of your current medications to your follow-up visit

12References/r20

Guidelines and key sources

›Guideline and consensus sources

›Burnstine MA. Clinical recommendations for repair of isolated orbital floor fractures: an evidence-based analysis. Ophthalmology. 2002

›Evidence-based indications and timing for orbital floor repair

›Pandya RP, Deng W, Hodgson NM. Current guidelines and opinions in the management of orbital floor fractures. Otolaryngologic Clinics of North America. 2023

›Comprehensive review of contemporary management approaches

›Appelbaum RD et al. Antibiotic prophylaxis in injury: AAST critical care committee clinical consensus document. Trauma Surgery and Acute Care Open. 2023

›AAST consensus against routine antibiotic prophylaxis for nonoperative orbital fractures

›ACR Appropriateness Criteria: Orbits Vision and Visual Loss. Journal of the American College of Radiology. 2018

›CT maxillofacial as primary imaging for orbital trauma

›Key clinical studies

›Nikunen M et al. Orbital blowout fractures: manifestations and missed diagnoses in 207 surgically treated patients. Medicina Oral Patologia Oral y Cirugia Bucal. 2024

›Serious ocular injury in 24% of cases; surgical criteria and outcomes data

›Takamura N et al. Surgical repair within 24 hours improves ocular motility in pediatric orbital fractures with muscle entrapment. Plastic and Reconstructive Surgery. 2025

›Evidence for emergent surgical timing in pediatric trapdoor fractures

›Scoville NM, Ding L, Stacey AW. Success rates of lateral canthotomy and cantholysis for treatment of orbital compartment syndrome. American Journal of Emergency Medicine. 2023

›Success rate data for canthotomy and cantholysis

›Shen C et al. National analysis of surgical intervention for orbital floor fractures: implications on early versus late repair. Annals of Plastic Surgery. 2025

›Early repair outcomes data

›Yew CC et al. White-eyed blowout fracture: diagnostic pitfalls and review of literature. Injury. 2015

›Diagnostic challenges and missed diagnosis rate in pediatric patients

Learn More: Orbital Floor Fracture (Blowout)→

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Reviewed by SymptomDx Medical Team · Last reviewed August 18, 2026

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