On fundoscopic examination of a patient, a red dot is seen. He has a history of being hit by a tennis ball. What is the probable cause?

Ans is 'b' i.e. Berlin's edema The 'red dot' can be a finding in Berlin's edema, Macular hole and Macular bleed. Berlin's edema is a common finding after trauma whereas other too are quite rare after trauma."A common finding with blunt injuries, which may lead to acute visual loss, is Berlin's edema (commotion retinae). " - Yanoff "Commotio retinae (Berlin's oedema) is of common occurrence following a blow on the eye. It manifests as milky white cloudiness involving a considerable area of the posterior pole with a 'cherry-red spot' in the foveal region. It may disappear after some days or may be followed by pigmentary changes. "- Khurana "Commotio most frequently affects the temporal fundus. If the macula is involved, a 'cherry-red spot' may be seen at the fovea KanskiMacular hole is a full-thickness absence of the sensory retina in the macula.It also appears as a red spot and trauma is one of the causative factor. But trauma is one of the rare causes of Macular hole. The majority of macular holes are idiopathic, occurring in eyes that have no previous ocular pathology.Macular bleed can also appear as 'red spot' but it is also a rare occurrence after trauma.A Macular tear does not appear as red spot.