His name is associated with accessory lacrimal glands known as "Ciaccio's glands".

Accessory lacrimal glands in the conjunctiva constantly produce the aqueous portion of tears.

The apparatus includes the lacrimal gland and the accessory lacrimal gland, which produce the tears.

Krause's glands are small, mucous accessory lacrimal glands that are found underneath the eyelid where the upper and lower conjuctivae meet.

Ciaccio's glands are small tubular accessory lacrimal glands (glandulae lacrimales accessoriae) found in the lacrimal caruncle of the eyelid.

Another type of accessory lacrimal gland are "Krause's glands", which are smaller, more numerous than "Ciaccio's glands" and are found along the superior and inferior fornices of the conjunctival sac.