A 14,000-volt electrical shock gave this man star-shaped cataracts

Illustration for article titled A 14,000-volt electrical shock gave this man star-shaped cataracts

In the latest issue of the New England Journal of Medicine, researchers recount the fascinating case of an electrician who, after sustaining a 14,000-volt shock to his left shoulder, presented with "bilateral stellate anterior subcapsular opacities of the lens." Translation: Starburst-shaped cataracts.

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Researchers Bobby Korn and Don Kikkawa of describe the patient's initial condition and long-term course of treatment in a case study titled "Ocular Manifestation of Electrical Burn":

Illustration for article titled A 14,000-volt electrical shock gave this man star-shaped cataracts

A 42-year-old male electrician presented to the eye clinic with decreasing vision 4 weeks after an electrical burn of 14,000 V to the left shoulder. His vision in both eyes was limited to perception of hand motions, with an intraocular pressure of 14 mm Hg in each eye. Slit-lamp examination showed bilateral stellate anterior subcapsular opacities of the lens (top panels, right and left). Dilated funduscopic examination showed scattered cotton-wool spots and bilateral optic-nerve pallor, which was greatest in the left eye (bottom panels, right and left). Four months after the injury, the patient underwent cataract extraction and implantation of an intraocular lens, which was followed by improvement in visual acuity to 20/70 in the right eye and 20/400 in the left eye. Two years after the injury, a retinal detachment developed in the left eye, and the patient underwent repair. At a 10-year follow-up visit, the patient's visual acuity was 20/100 in the right eye, but in the left eye he could only count fingers. There was bilateral optic atrophy with widespread macular pigment disruption. Although the patient was legally blind, he was able to read with the use of low-vision aids and was able to independently commute on public transportation. When lenticular opacities are the sole manifestations of electrical injury, cataract extraction is expected to produce a functional outcome. However, with concurrent damage to the optic nerve and retina, complete visual rehabilitation may be limited.

It's not uncommon for cataracts to form after an eye-injury. In fact, the formation of a star-shaped cataract isn't entirely unprecedented, either. Earlier this year, a man in Austria developed a star-shaped cataract in his eye after he was punched in the face. What makes the electrician's case so interesting, of course, is the role of electrocution in the development of his cataracts – and while it's not entirely clear why the cataracts take on a stellar shape, the ultimate takeaway is clear: Be safe around electricity, folks.

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[NEJM]

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DISCUSSION

LaurenShaw
LaurenShaw

Well, it may no longer be my job after Thursday, but, one last wade into electrical conversation on io9.
Was there an arc flash? If he was shocked through the left shoulder, the current would have either completed a circuit back to where it came from, or gone to ground through his body. While his whole body would have the potential for current, only the oath the electricity tokk would be counted as current for voltage and amperage.
But if there was an arc flash, as in, electricity jumped out (14.kV is listed as a limit of approach for three metres in Alberta due to arc potential) the it makes sense. Both the flash and the compression wave would cause injury to the eyes. High intensity light and heat radiating outward, with a pitential to reach 20,000 degrees celcius, well, not a good day for the eyes.
So, no flash goggles, no PPE, and a close approach with resulting electrical contact?
Maybe it's a good thing that my department was downsized... This stuff gets depressing.