Some people can not produce enough tears if they live in dry climates. Over time living in a dry climate causes over drying of your eyes and increases the production of tears however as you get older the production of tears does not hold up. So in dry climate some people need artificial tears.
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Someone could have a stigmatism, but they would either have 1. a hole in each hand and various other wounds (ie. stigmata) or 2. have perfect vision.
Some people can not produce enough tears if they live in dry climates. Over time living in a dry climate causes over drying of your eyes and increases the production of tears however as you get older the production of tears does not hold up. So in dry climate some people need artificial tears.