Enlargement of blind spot is a sign of:
Concentric enlargement of blind spot is the most common visual field defect in patients with papilledema.Compression,detachment ,and lateral displacement of the peripapillary retina appears to be the major reasons that the blind spot increases in size in patients with papilledema. Ref : Riordan-Eva P. (2011). Chapter 3. Ophthalmic Emergencies. In P. Riordan-Eva, E.T. Cunningham, Jr. (Eds), Vaughan & Asbury's General Ophthalmology, 18e.
Avulsion of optic nerve
Papillitis
Papilledema
Retinal detachment