Adam,Rouilly AR403 - Page 23

Condion 19
This view is of the opc disc and surrounding rena
The main clinical features are:
• Disc margin and emerging vessels obscured
by myelinated nerve bres along
superior and nasal areas
This diagnosis is consistent with:
MYELINATED NERVE FIBRES
Comment:
On clinical examinaon the blind spot would be expected to be larger, but this would be very
dicult to discern clinically. Approximate 1-3% of the populaon have some degree or other
of this normal variant. During embryogenesis the myelinated nerve bres “spilled” over onto
the renal nerve bres rather that stopping within the opc disc margin.
Condion 20
This view is of the posterior pole centred on the opc disc
The main clinical features are:
• Large opc disc
• Marked peripapillary choriorenal atrophy
This diagnosis is consistent with:
HIGH MYOPIA
Comment:
Areas of choriorenal atrophy in the macular area are not uncommon in highly myopic
paents. The paent would be expected to have an enlarged blindspot.
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