Miliahttps://en.wikipedia.org/wiki/Milium_(dermatology)
Milia is an obstruction of the eccrine sweat gland. It is a keratin‑filled cyst that can appear just beneath the epidermis. Milia can also be mistaken for whiteheads. In children, milia often disappear within two to four weeks. In adults, they can be removed by a physician for cosmetic purposes.

○ Treatment
They are not contagious. Careless removal may leave punctate scars around the eyes.

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  • Milia is more likely to occur if you rub your eyes frequently.
    References Milia 32809316 
    NIH
    Milia (singular: milium) are benign and transient subepidermal keratin cysts that present as small firm white papules in various numbers most commonly distributed on the face, but they can also be present on other anatomical areas such as the upper trunk, extremities, and genital area (prepuce). The classification of milia includes primary and secondary. The vast majority of primary milia accounts for congenital milia that occur spontaneously and are present at birth, mainly over the nose, scalp, eyelids, cheeks, gum border (Bohn nodules), and palate (Epstein pearls). Still, there is another percentage of primary milia that may occur in association with certain rare genodermatoses (inherited genetic skin disorders) in children and adults. Meanwhile, secondary milia manifest in association with underlying skin pathology, medications, or skin trauma.