A. When two arcuate scotomas join.
B. Due to comma shaped extension of blind spot.
C. Due to small discrete scotomas that occur in Bjerrums area within central 10°.
D. Due to mild & generalized constriction of central & peripheral field.
Ans:A. When two arcuate scotomas join.
The field defect shown in the photograph above in a patient of Glaucoma represents Double arcuate or ring shaped scotoma.
Double arcuate or ring shaped scotoma : It develops when two arcuate scotomas join.