Table 2 Indication for OPG diagnostic MRI

Ophthalmological screening

Total, n (%)

3 (23%)

2 (25%)

5 (24%)

Optic disc*, unilateral

2

2

4

Reduced visual acuity

1

1

Other symptoms suggestive of OPG

Total, n (%)

5 (38%)

4 (50%)

9 (43%)

Change in visual behavior

1

1

2

Strabismus

1

1

Exophthalmus

1

1

2

Macrocephaly

2

2

Hydrocephalus

1

1

Growth retardation

1

1

No OPG-related symptoms

Total, n (%)

5 (38%)

2 (25%)

7 (33%)

Routine brain MRI at diagnosis or as part of surveillance

5

2

7