how to know if you have hunter eyes

Sure, although it's a bit outside the realm of mathematics. The term 'hunter eyes' refers to certain physical traits in human eyes. Those who are said to have 'hunter eyes' typically have deep-set eyes, prominent brow ridges, and more horizontal eyelids. It's called 'hunter' because these traits are surmised to have been beneficial for hunting in our early evolutionary history, since they might have protected the eyes and enhanced focus on distant objects.

As I mentioned earlier, if your eyes are more deep-set, your brow ridges are pronounced and your eyelids tend to be more horizontal than vertical, those are traits that might indicate the 'hunter eyes'. However, determining these factors may be somewhat subjective and personal interpretation will often vary. If you want a definitive answer, it would be best to consult with an eye care professional or a physical anthropologist.

Not necessarily. 'Sanpaku' is a term of Japanese origin that refers to eyes in which the whites are visible below or above the iris when looking straight ahead. This is independent of the traits associated with 'hunter eyes'. It's not about opposites, but rather different characteristics of eye shape.