Sad to hear and sadder to see I’m sure. According to some of the literature temperature extremes and wide temperature fluctuations are the most common cause of eye issues barring the morph identifications that we know about. I think and am not absolutely sure but the genetic codes for normal structure and development not only in the egg, but prior to the shelling process can randomly become disrupted. So possibly it can be from a genetic foundation.
Stay in peace and not pieces.
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