Sometimes the smallest of tasks can result in disaster. Always be extra careful in the garden. I have a particular bug bear with garden canes. They can be blinding. Classically someone bends down quickly to pull out a weed, the cane falls into a blind spot and the next thing you know you are irreversibly blind. We have broad plastic toppers to our canes to reduce the potential for problems.
The problem is the canes are perfect for sliding along between the nose and the inner aspect of the eyeball. The first thing it hits is the optic nerve, and the nerve is often severely traumatised or even cut off. Any damage is irreversible.
My on call last week involved someone pottering around a garden shed, bending down quickly and not seeing an old cane end. The result was the end of an old bamboo cane impaling his eye and then snapping off (to the right of the area marked A and B, seen as a dark line in the photo). With several inches of cane attached to his eyeball he wasn’t left with much of an option and pulled the cane out. On arrival in the Emergency Eye Department the registrar was a little perplexed about what they were looking at. The eye was thankfully intact. The cornea was a little scratched but that would heal within a day or two. He clearly had a 3-4mm piece of the bamboo cane embedded in his cornea but there was no clear entry site and no obvious way of getting it out. Organic foreign bodies of this nature usually contain organisms that live in soil and they need to come out. The history was of an old jagged cane end and visible dark stuff round the residual fragment in keeping with soil meant we were heading to theatre urgently.
Interestingly when I looked in I wasn’t so perplexed. I believed the cane had sliced through the front of the cornea, shelving it, but not piercing the cornea fully. The top part of the splinter was going to be where we winkled it out.
Local anaesthetic was all that required to make things comfortable. A Newells Retractor is my preferred speculum in cases of trauma, if there is any chance that the eye has been perforated. Under the microscope the splinter was lifted up from the corneal bed and then grabbed with a microforcep. It took several attempts to essentially pull the splinter free and there was always a risk of it snapping off at its distal end. It really was well embedded (into the limbus) but it came free as one large splinter. The key to pulling it out, was to try to remove it in exactly the same 3 dimensional spatial position , only applying the force in the opposite direction from the way it was forced in. The wound was irrigated and debrided as best with one pass of each 25gauge needle used. The wound was flushed under pressure in an attempt to remove as much foreign material as possible and then irrigated with antibiotics.
The following day the eye was settling but disturbingly there were two microscopic abscesses deep in the wound. Amphotericin (an antifungal treatment) was added to the eye drop regime . Only time will tell if we have managed to do enough, to salvage the eye, but all in all he has been very fortunate not to cause more serious damage to his eye in the potting shed.
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