Optical Coherence Tomography (OCT) C Fundamentals Practice Test

What is the abbreviation for the inner plexiform layer?

INL IPL GCL RNFL

Correct Answer:

IPL

Explanation:

The abbreviation for the inner plexiform layer is IPL. This layer sits between the ganglion cell layer (GCL) and the inner nuclear layer (INL) and is where bipolar cells form synapses with ganglion and amacrine cells, shaping the visual signal before it leaves the retina. In OCT labeling, IPL is commonly shown alongside neighboring layers such as GCL, INL, and RNFL. The other options refer to different retinal layers: INL is the inner nuclear layer, GCL is the ganglion cell layer, and RNFL stands for the retinal nerve fiber layer.

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