The Big Blind Spot Syndrome is associated with enlargement of the normal blind spot.
Typical findings
(1) unilateral/monocular scotoma with enlargement of the blind spot
(2) the affected eye usually shows disc edema, but occasionally does not (especially if examined late)
(3) the patient often has otherwise normal vision
If examined within the first 2 weeks of onset there may be additional findings (disc staining, peripapillary retinitis, foveal changes and peripheral retinal spots)
Implicated causes include:
(1) papillophlebitis
(2) vasculitis
(3) paraneoplastic syndrome
(4) syphilis
(5) secondary to chorioretinitis
(6) idiopathic
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