Our expert says:
Bruce, there are certain insects (black flies) that may cause eye problems – I think you’re referring to river blindness (onchocerciasis). You don’t have to worry though, because it isn’t present in Pretoria. It was probably due to a little insect or piece of plant material and it’s nothing to worry about. If it doesn’t clear up within the next week though, the best would be to see your doctor just to make sure. Good luck.
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