The lacrimal sac is a structure located in the eye socket that is responsible for collecting tears before they drain away through the nasal cavity. There are several synonyms for the lacrimal sac, including the nasolacrimal sac, the lacrimal gland sac, the lacrimal duct sac, and the tear sac. These terms all refer to the same structure and are used interchangeably in medical and anatomical literature. Understanding the different synonyms for the lacrimal sac is important for healthcare professionals and students studying ophthalmology, as it can help them to communicate effectively with their colleagues and patients.