Sometimes also called “Pastel Goth” style, or “Yami Kawaii” or “Guro Kawaii.”
It often features oversized eyes, frequently conflicting pastel colors, and implications of illness or injury, or overwhelming internal sadness. It’s sometimes used to explore and express complex emotions or societal issues.
If you haven’t read Junko Mizuno, highly recommended. You’ll never look at some of those big eyes ponies that are being uploaded the same.
Unfortunately, I don’t know a name or term for the eyes themselves. I’ll ask some friends to see if they know.