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RNFL Distribution Assuming approximate equal distribution of the 1.2 million axons, there are about 100,000 axons in each of the 12 clock hours in a normal eye.
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Back to Basic Anatomy There are approximately 1.2 million axons within the retinal nerve fiber layer in normal individuals under the age of 50 or so.2
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Case 1: Optomap® plus with ResmaxTm Images and Visual Fields The visual field loss below in the right eye is predictable from the Optomap® plus with Resmax™ Images.
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Case 1: Optomap® plus with ResMax™ Images The left eye has a larger cup than the right, and a far more extensive field loss. However, similar wedge RNFL defects are not observable in the left eye because nearly all of the RNFL has been lost. As a general rule, RNFL defects are easier to
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Case 1: Optomap® plus with Resmax™ Color and Green Separation Images OD As a general rule, green separation with an optos® image results in a more obvious RNFL loss than does the composite or color image.
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In this OptoMap® plus with ResMax™ image, the RNFL defects may be somewhat easier to visualize.
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Case 1: Optomap® Green Separation Fundus Image OD In the 200° green separation view, both the superior temporal and inferior temporal RNFL defects are easily observable.
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Case 1: Optomap® Color Fundus Image OD In this 200° optomap® image, cupping is obvious as well as a large superior temporal RNFL loss.
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Panoramic RNFL Imaging The Optos® fly through is particularly helpful for patient education in demonstrating the extent and location of retinal abnormalities. We begin with a panoramic Image from a known glaucoma patient who exhibits a very obvious superior temporal RNFL defect OD. This defect and a slightly less obvious inferior
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Retina Nerve Fiber Layer (RNFL) defects are typically best documented and quantified with GDx and OCT. Focal RNFL defects are often detectable with panoramic ophthalmoscopy many disc diameters away from the optic nerve head. Such distant RNFL defects may or may not reach the disc but are real nevertheless as documented by corresponding GDx,