Dark<unk>  or<unk>  are dark blemishes around the<unk> s. Also known as "bags under the<unk> s,"  there are many etiologies to cause this symptom. For instance, by lack of sleep, by deficiency of vitamin K,  by heredity and by bruising.
Eye circles
Fundal height
Arc eye
Median aperture
Audios
Canthus 
Nasal hair
Vitreous humour