The Eye in the Wilderness

Butler, Frank K.

doi:10.1016/b978-0-323-03228-5.50030-6

Cited by 8 publications

(32 citation statements)

References 105 publications

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“…HBO 2 is not always required to restore retinal function in CRAO. The use of normobaric hyperoxia has been shown to restore vision and prevent retinal cell death in some CRAO patients [14,25]. When normobaric oxygen is able to improve retinal oxygenation sufficiently for significant improvement in vision to occur, the improvement in vision usually occurs within several minutes.…”

Section: Discussionmentioning

confidence: 99%

“…When normobaric oxygen is able to improve retinal oxygenation sufficiently for significant improvement in vision to occur, the improvement in vision usually occurs within several minutes. Vision is likewise typically lost rapidly when supplemental oxygen is removed [14,25]. Patz reported two CRAO patients treated with supplemental oxygen at 1 ATA.…”

Section: Discussionmentioning

confidence: 99%

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Management of central retinal artery occlusion following successful hyperbaric oxygen therapy: case report

Butler

Hagan

Hoesen³

et al. 2018

UHM

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Objective: This case report presents a patient with central retinal artery occlusion (CRAO) who was successfully treated with hyperbaric oxygen (HBO 2) but subsequently suffered a recurrence of his visual loss. Methods: CRAO may be treated successfully with HBO 2 if treatment is undertaken promptly after the onset of vision loss. The goal of HBO2 therapy is to oxygenate the ischemic inner retinal layers via diffusion from the hyperoxygenated choroidal circulation until recanalization of the central retinal artery occurs. Results: A 71-year-old man presented with hand motion vision and fundus findings of CRAO in his left eye. Treatment with HBO 2 was initiated approximately 9.5 hours after loss of vision. The patient experienced return of vision to a near-normal level during HBO 2. His vision loss recurred, however, 15 minutes after the HBO 2 session. There was a delay to follow-up HBO 2 treatments, and the improvement of vision that resulted from these subsequent HBO 2 sessions was much less than that experienced during his initial HBO 2 treatment. Conclusions: Recovery of vision during initial HBO 2 treatment indicated that this patient's retina had not yet suffered irreversible ischemic damage at that point in time. CRAO patients with a good result from initial HBO 2 treatment should be admitted to a stroke center and should have their visual status monitored hourly. Should vision loss recur, aggressive use of intermittent 100% normobaric and hyperbaric oxygen is indicated to preserve retinal function until central retinal artery recanalization occurs. An evidence-based management plan for such patients is presented.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Management of central retinal artery occlusion following successful hyperbaric oxygen therapy: case report

Butler

Hagan

Hoesen³

et al. 2018

UHM

Self Cite

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“…At altitude an increase in retinal blood flow and subsequent retinal vein dilation 11 can lead to retinal hemorrhages, which have been well described since the 1970s. 29 The percentage of climbers experiencing retinal hemorrhages ranges from 4% to 82%, depending on the study.…”

Section: High-altitude Retinal Hemorrhagementioning

confidence: 99%

“…Evacuation should be emergent, as iritis can be complicated by scarring of the pupil and elevated IOP, leading to decreased vision or blindness. 11 Topical steroids: 1C Systemic steroids: 2C Mydriatic drops: 1C Topical NSAID: 2C Emergent evacuation: 1C…”

Section: Acute Angle-closure Glaucomamentioning

confidence: 99%

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Wilderness Medical Society Practice Guidelines for Treatment of Eye Injuries and Illnesses in the Wilderness: 2014 Update

Paterson

Drake²,

Tabin

et al. 2014

Wilderness & Environmental Medicine

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A panel convened to develop an evidence-based set of guidelines for the recognition and treatment of eye injuries and illnesses that may occur in the wilderness. These guidelines are meant to serve as a tool to help wilderness providers accurately identify and subsequently treat or evacuate for a variety of ophthalmologic complaints. Recommendations are graded on the basis of the quality of their supporting evidence and the balance between risks and benefits according to criteria developed by the American College of Chest Physicians. This is an updated version of the original guidelines published in Wilderness & Environmental Medicine 2012;23(4):325-336.

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Ocular Complications in Hyperbaric Oxygen Therapy

Butler¹,

Hagan²

2008

Physiology and Medicine of Hyperbaric Oxygen Therapy

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The Eye in the Wilderness

Cited by 8 publications

References 105 publications

Management of central retinal artery occlusion following successful hyperbaric oxygen therapy: case report

Management of central retinal artery occlusion following successful hyperbaric oxygen therapy: case report

Wilderness Medical Society Practice Guidelines for Treatment of Eye Injuries and Illnesses in the Wilderness: 2014 Update

Ocular Complications in Hyperbaric Oxygen Therapy

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