Dacryops, also known as a lacrimal gland ductal cyst, is a rare benign cystic lesion arising from the primary or accessory lacrimal glands. Although commonly asymptomatic and slow growing, dacryops may become clinically significant when associated with acute inflammation or secondary infection. This case report describes an unusual presentation of infected dacryops in a paediatric patient, highlighting diagnostic challenges and the importance of thorough clinical and radiological evaluation. A nine‑year‑old female presented with sudden onset of painful swelling of the left upper eyelid, prompting initial suspicion of an inflammatory or infectious etiology such as preseptal cellulitis. Clinical examination revealed localized tenderness, chemosis, erythema and restricted extraocular movements on lateral gaze, raising concern for orbital pathology. Initial management with intravenous antibiotics resulted in partial symptomatic improvement but persistent superotemporal fullness prompted further evaluation. Ultrasonography revealed a single‑walled cystic lesion with low internal reflectivity, while MRI demonstrated a well‑defined extraconal cystic structure arising from the left lacrimal gland with surrounding soft‑tissue edema. These findings confirmed the diagnosis of dacryops with acute infection. Because the condition was benign and the guardians declined surgical intervention, conservative management and observation were adopted. This case emphasizes the importance of considering dacryops in the differential diagnosis of upper fornix or lacrimal gland swellings, especially in paediatric age groups where such presentations are exceedingly rare. Early radiological assessment using ultrasound and MRI assists in differentiating dacryops from more serious conditions like orbital abscess or cellulitis. Awareness of this entity can prevent unnecessary interventions, ensure appropriate management, and minimize diagnostic delays. The case also highlights the role of clinical judgment in deciding between surgical excision and conservative observation. This report contributes to the limited literature on paediatric dacryops and underscores the need for continued documentation of such unusual presentations.