Optical Coherence Tomography Angiography and Multifocal Electroretinogram Findings in Paracentral Acute Middle...

Area of Science:

• Ophthalmology
• Retinal Imaging
• Vascular Retinopathies

Background:

• Paracentral acute middle maculopathy (PAMM) is an optical coherence tomography (OCT) finding associated with retinal capillary ischemia.
• Transient central retinal artery occlusion (CRAO) can lead to retinal vascular events.

Observation:

• This case report presents a patient with PAMM following a transient CRAO.
• Multimodal imaging, including OCT angiography and fluorescein angiography, was utilized.

Findings:

• The case demonstrated hypoperfusion in both the choriocapillaris and the deep capillary plexus, with choriocapillaris involvement being a novel observation.
• Multifocal electroretinogram (mfERG) was found to be a useful diagnostic tool for PAMM.

Implications:

• This study expands the understanding of PAMM pathophysiology, highlighting potential choriocapillaris involvement.
• The findings suggest mfERG is a valuable method for assessing retinal function in PAMM patients.
• This case provides the first reported mfERG findings specifically for PAMM.