PMC10062076_01
Color fundus photo showing optic disc pallor in the right eye (a) and normal-looking disc in the left eye (b)
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F1
Fundus examination revealed a pale optic disc in the right eye [Figure 1a], whereas it was normal in the left [Figure 1b].
Humphrey visual field 24-2 showing normal field in the left eye (a) and constricted field in the right eye (b)
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F2
Humphrey visual field examination showed a severely constricted field in the right eye [Figure 2a] and a normal field in the left eye [Figure 2b].
Magnetic resonance angiography showing an aneurysm arising from the supraclinoid part of the right ICA (a) (red arrow). Magnetic resonance imaging coronal section showing giant aneurysm of the right ICA (blue arrow) causing marked compression of the right prechiasmal optic nerve and well-delineated prechiasmal optic nerve on the left side (b) (red arrow). ICA: Internal carotid artery
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F3
The child was advised magnetic resonance imaging (MRI) of the brain and orbits which showed unruptured saccular aneurysm (3.0 cm x 2.3 cm x 2.3 cm) arising from the supraclinoid part of the right ICA [Figure 3a]. There was compression of the intracranial prechiasmatic portion of the right optic nerve and it was poorly delineated on the MRI scan [Figure 3b].