Fundus autofluorescence imaging in a patient with rapidly developing scotoma

Area of Science:

• Ophthalmology
• Retinal Imaging
• Neuroscience

Background:

• Acute macular neuroretinopathy is characterized by sudden visual field defects.
• Fundus autofluorescence (FAF) can indicate retinal health, but its rapid changes in this condition are not fully understood.

Purpose of the Study:

• To investigate a case of acute macular neuroretinopathy with rapid development of scotomas.
• To analyze the correlation between visual field defects and fundus autofluorescence changes.

Main Methods:

• Case documentation using color fundus photography, FAF, infrared imaging, and spectral domain optical coherence tomography (SD-OCT).
• Assessment of scotomas using Humphrey visual field testing and MP-1 microperimetry.

Main Results:

• Visual field defects corresponded spatially to wedge-shaped lesions seen in fundus imaging.
• Lesions showed increased autofluorescence within 3 weeks of presentation.
• SD-OCT revealed focal loss of photoreceptor inner segment/outer segment junctions.

Conclusions:

• The rapid hyperautofluorescence suggests primary photoreceptor dysfunction.
• This finding is likely indicative of photoreceptor cell damage and loss of structural integrity.
• FAF changes may reflect early cellular events in acute macular neuroretinopathy.