Field defect not seen in glaucoma is: (AIPG 2010)
|A||Temporal field is first to be affected|
|C||Isolated scotoma may develop|
|D||Complete barring of blind spot|
1. The most common early visual field defect in chronic open angle glaucoma is small isolated paracentral Q scotomas between 10° and 20°. (Bjerrum’s area).
2. In uncontrolled -glaucoma a sickle shaped extension of blind spot with concavity of sickle towards the fixation point may develop. (Seidel's sign) Q
3. Isolated scotomas in Bjerrum's area may coalesce to form a classic arcuate scotoma known as Bjerrum's scotoma.Q
4. If the visual field is charted with a very small object (1/2000) the central field shows a localized constriction to exclude the blind spot (baring of blind spot).