Studies have demonstrated the high analytical and diagnostic performance of OCT imaging of the RNFL, ONH, and macula for the recognition of glaucomatous and non-glaucomatous eyes. General Concepts of OCT Analysis for Glaucoma. Circular scans are centered around the ONH in order to capture RNFL and ONH measurements.

Dec 15, 2015 · When a doctor discovers bilaterally elevated optic nerve heads (ONH), she or he faces a particular diagnostic challenge, especially when that patient is a child. Distinguishing congenital etiologies of optic disc elevation (known as pseudopapilledema) from true papilledema is …

Segmentation algorithms can be applied to the cross-sectional images to obtain retinal and RNFL thickness and ONH structural information. Stratus OCT (Carl Zeiss Meditec, Dublin, CA), the most commonly used time-domain OCT (TD-OCT) produces cross-sectional images with an axial resolution of 8 – 10µm and a transverse resolution of ...

Sep 15, 2014 · Here, we review diagnostic strategies for a wide variety of optic nerve irregularities that may be observed in clinical practice. Examining the optic nerve can be a daunting task. Its potential permutations are diverse, with individualized variations in …

The Stratus OCT measured retinal nerve fiber layer (RNFL) thickness via a 3.5-mm-diameter circle centered on the optic disc and used radial scans to provide measurements of the optic nerve head (ONH) such as disc, cup, and rim area.

Optical coherence tomography is a non-contact, high-resolution, in vivo imaging modality. It produces cross-sectional tomographic images just like ultrasound. Decreased OCT image quality can be attributable to cataracts which block light, patient motion artifact, or …

May 6, 2020 · Loss of retinal nerve fiber layer can be observed in red-free photos and is quantified with OCT. The peripapillary RNFL thickness is by far the most popular OCT parameter used for glaucoma diagnosis and monitoring progression.

Sep 26, 2024 · Optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) are non-invasive imaging tests. They use light waves to take cross-section pictures of your retina. With OCT, your ophthalmologist can see each of the retina’s distinctive layers and the optic nerve fiber layer.

Our review focuses on the Cirrus HD-OCT in diagnosing glaucoma and glaucoma progression. There are three main parameters relevant to the detection of glaucomatous loss: retinal nerve fiber layer, optic nerve head, and the “ganglion cell complex.”

Optic nerve head (ONH) evaluation is essential in the diagnosis and management of patients with glaucomatous optic neuropathy. Qualitative assessment of the optic disc can be obtained by clinical examination and photographic documentation of clinical findings.