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Case 2: Maia Microperimetry OS
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Evaluates Macula Threshold, Fixation Stability & Change over time • Any maculopathy - AMD, Drug toxicity, Amblyopia or Unexplained vision loss • Plots progression of macular threshold and fixation stability • Demonstrates the effect of external treatment regimens to macular threshold & fixation stability See RR # 32 for numerous examples.
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maia™ (Macular Integrity Assessment) uses a near infrared scanning laser ophthalmoscope to provide high-resolution retinal images. It also incorporates an automated eye tracker to ensure point-to-point correspondence and consistency of examination as well as automated threshold perimetry to perform fundus perimetry. More traditionally this is called microperimetry and provides a functional evaluation of
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Case 2: Maia Microperimetry OD
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Histological Section as Compared to the OCT Image Although the Photoreceptor Integrity Line, or the PIL (defined as the junction between the inner and outer segments) is barely visible in most histological sections, it is highly prominent in normal SD OCTs. The PIL, as shown above, should be continuous throughout the entire scan
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Case 2: Fundus and PIL SD OCTs through the macula reveal a normal foveal pit and a normal PIL. The PIL is a biomarker for photoreceptor integrity.
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Case 2: Optovue OU Exam A comparison of the right and left eye reveal the differences.
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Case 2: Optovue Exam OS In the left eye, the RNFL is thicker inferiorly than superiorly, for unknown reasons.
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Case 2: Optovue Exam OD The circumpapillary retinal nerve fiber layer (RNFL) is shown above for the right eye. The inferior RNFL is 21um thinner than the superior RNFL thickness.
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Case 2: iVue GCC Thickness Patient vs. Normal Comparison OU The patient's GCC Thickness Map is shown on the top and a normal control is shown below. A normal GCC should be like a symmetric donut as demonstrated above in the left eye. The thin GCC inferiorly OD