Ocular foreign body (microgravity)

Background

• Ocular foreign bodies are a high-risk chief complaint because of short and long-term threats to vision loss and loss of crew function.
• Risk of ocular injury from foreign body in space and microgravity may be higher than on earth due to unintended airborne particulate matter remains suspended and may travel along existing air currents.
• Second most common ocular complaint (behind irritation) with estimated prevalence of 11.11% - 35.56% of astronauts on International Space Station and Shuttle.

Differential Diagnosis

Space medicine

• Ebullism syndrome
• Interpersonal conflicts in spaceflight
• Space adaptation syndrome
• Space motion sickness
• Spaceflight headache
• Contact dermatitis of spaceflight
• Ocular foreign body (microgravity)
• Spaceflight urinary tract infection
• Anemia of spaceflight
• Spaceflight urinary retention
• Sleep disorders of spaceflight
• Pulmonary disorders of spaceflight
• Hydrazine toxicity
• Nitrogen tetroxide toxicity
• Space dentistry
• Spaceflight urinary tract infection
• Spaceflight testicular torsion

Unilateral red eye

• Nontraumatic
  • Acute angle-closure glaucoma^
  • Anterior uveitis
  • Conjunctivitis
  • Corneal erosion
  • Corneal ulcer^
  • Endophthalmitis^
  • Episcleritis
  • Herpes zoster ophthalmicus
  • Inflamed pinguecula
  • Inflamed pterygium
  • Keratoconjunctivitis
  • Keratoconus
  • Nontraumatic iritis
  • Scleritis^
  • Subconjunctival hemorrhage
• Orbital trauma
  • Caustic keratoconjunctivitis^^
  • Corneal abrasion, Corneal laceration
  • Conjunctival hemorrhage
  • Conjunctival laceration
  • Globe rupture^
  • Hemorrhagic chemosis
  • Lens dislocation
  • Ocular foreign body
  • Posterior vitreous detachment
  • Retinal detachment
  • Retrobulbar hemorrhage
    • Ocular compartment syndrome
  • Traumatic hyphema
  • Traumatic iritis
  • Traumatic mydriasis
  • Traumatic optic neuropathy
  • Vitreous detachment
  • Vitreous hemorrhage
  • Ultraviolet keratitis

^Emergent diagnoses ^^Critical diagnoses