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Sequential multifocal electroretinogram findings in a case of Purtscher-like retinopathy
Faisal Haq1, Thasarat S Vajaranant, Janet P Szlyk
1Department of Ophthalmology and Visual Science, University of Illinois at Chicago, 60612, USA.
Purpose:
To report the multifocal electroretinographic findings of a patient with pancreatitis-associated Purtscher-like retinopathy.
Design:
Observational case report.
Methods:
A 20-year-old man with a history of alcohol abuse and acute pancreatitis underwent multifocal electroretinography (mfERG; 103-scaled hexagons, 8-minute recording time) at 1 week, 4 weeks, and 6 months after the onset of the retinopathy.
Results:
At 1 week, the patient had extensive cotton- wool spots in the posterior pole bilaterally, and visual acuity was significantly reduced. Both the A-waves and B-waves of the mfERG were depressed in the corresponding areas. At 4 weeks, neither visual acuity nor mfERG showed improvement, although the cotton-wool spots had resolved. Interestingly, at 6 months, visual acuity had improved significantly in the left eye, consistent with increased ratios of mfERG responses for the central area.
Conclusion:
There was no selective reduction of b-waves of the mfERG as anticipated in isolated inner retinal pathology. In this case, both the A-waves and B-waves were reduced, suggesting damage to both outer and inner retinal layers.