Murphy's Law: When Good Tests Go Bad!

For decades, clinicians have utilized office-based testing such as fluorescein angiography, b-scan ultrasonography, and full-field ERG in the diagnosis and management of neuroophthalmic disorders. More recently development of optical coherence tomography (OCT), multifocal electroretinography (mfERG), and fundus autofluorescence (FAF) have improved the diagnostic armamentarium. However, as with all testing, faith in and dependence upon these tests can lead to delayed or missed diagnoses secondary to artifact, poor quality results, and misinterpretation. This syllabus will describe some of the key issues that lead to errors in selected officebased test results and diagnoses.