University of Wisconsin–Madison

Tag: Age-Related Macular Degeneration

AI-based Multilayer OCT Segmentation Model for AMD

Rachel Linderman, Aadhi1 Balasubramanian, Madeline Pflasterer-Jennerjohn, Lucas Maakested, Jeong W. Pak, Robert Slater, Roomasa Channa, Barbara A. Blodi, Amitha Domalpally Abstract Purpose: To assess an artificial intelligence (AI)-based OCT segmentation with the ability to segment 7 different layer edges. This created 6 retinal thickness layers that are for age-related macular degeneration (AMD) clinical trials. Methods: …

Association of RPD with Early Stage of AMD

Jeong W. Pak, David Lopez, Emily Y. Chew, Barbara A. Blodi,  Amitha Domalpally Abstract Purpose: Reticular pseudodrusen (RPD) is associated with increased risk of progression to late age-related macular degeneration (AMD), particularly geographic atrophy (GA). While most studies focused on eyes with intermediate AMD, risk of RPD at earlier stages of disease has been less …

Characterizing Intermediate AMD Biomarkers on OCT: Methods and Reproducibility

Jennifer Heathcote, Jordan Winkler, Jeong W. Pak, Rick Voland, Barbara Blodi, Amitha Domalpally Abstract Purpose: To define evaluation criteria and assess intergrader agreement for intermediate Age-related Macular Degeneration (iAMD) optical coherence tomography (OCT) biomarkers in eyes with nonexudative AMD. Methods: Trained graders independently evaluated Heidelberg OCT volume scans (20°x20°, 97 B scans) in eyes with …

Ellipsoid Zone Integrity Index: A Novel OCT Biomarker in AMD

Bethany M. Erb, Elaine Botros, Thomas F. Saunders, Anna-Maria Haas, Rick Voland, Rachel Linderman, Barbara A. Blodi, Amitha Domalpally, Karl G. Csaky Abstract Purpose: Change in geographic atrophy (GA) area as measured by fundus autofluorescence (FAF), a primary outcome in clinical trials, does not correlate with visual function. Preservation of photoreceptors, particularly in the foveal …

Characterization of OCT biomarkers and endpoints in intermediate AMD

Jordan Winkler, Jennifer Heathcote, Jeong W. Pak, Rick Voland, Barbara A. Blodi, Amitha Domalpally Abstract Purpose: To define evaluation criteria and intergrader agreement for assessing intermediate Age-related Macular Degeneration (iAMD) optical coherence tomography (OCT) biomarkers and endpoints in eyes with nonexudative AMD, relevant for clinical trials and AI development. Methods: Trained graders independently evaluated Heidelberg …

Longitudinal Analysis of Age-Related Macular Degeneration in the AMD Ryan Initiative Study (ARIS) (2023)

Jeong W. Pak, Gelique Ayala, Cynthia Hurtenbach, Christine Orndahl, Tiarnan DL Keenan, Frederick L. Ferris, C. P Wilkinson, Traci Clemons, Emily Y. Chew, Amitha Domalpally Abstract Purpose: ARIS is a 5-year observational study of participants with early AMD or reticular pseudodrusen (RPD) to identify novel biomarkers of disease progression. The AMD characteristics were followed longitudinally …

Multimodal Assessment of Incomplete Retinal Pigment Epithelial Outer Retinal Atrophy (iRORA) and Nascent Geographic Atrophy (nGA) in Age-Related Macular Degeneration (2023)

Gelique Ayala, Jeong Pak, Kenny Taylor, Cynthia Hurtenbach, Barbara Blodi, and Amitha Domalpally Abstract Purpose: To compare SD-OCT defined iRORA and nGA lesions to Fundus Autofluorescence (FAF) and Color Fundus Photography (CFP) Methods: Subjects enrolled in the Age-Related Eye Disease Study 2 (AREDS2) from the University of Wisconsin were included. Subjects underwent SD-OCT, FAF and …

Multimodal Imaging Evaluation of Age-Related Macular Degeneration (AMD) in the AMD Ryan Initiative Study (ARIS) (2022)

Andrew Dieu, Cynthia Hurtenbach, Jeong W. Pak, Tiarnan D. Keenan, Frederick L. Ferris, Charles P. Wilkinson, Christine Orndahl, Traci E. Clemons, Emily Y. Chew, Amitha Domalpally Abstract Purpose: ARIS is a 5-year, multicenter, international, prospective, observational cohort study of participants with early AMD or reticular pseudodrusen (RPD) to identify novel biomarkers of disease progression. The …

Comparable Growth Rates of Bilateral Geographic Atrophy due to Age-related Macular Degeneration (2019)

Jeong W. Pak, Amitha Domalpally, Kyle McDaniel, Barbara Blodi Abstract Purpose: To evaluate growth rate and characteristics of bilateral geographic atrophy (GA) associated with age-related macular degeneration (AMD) from fundus color and autofluorescence images Methods: We evaluated fundus photographs (FP) and autofluorescence images (AF) in AMD patients with bilateral GA at baseline and 1 year …

Drusen Area Measured from Color Photographs Compared to RPE and Drusen Volume from SD-OCT in Eyes with AMD over One Year (2017)

Ronald P Danis, Amitha Domalpally, Ralph Trane, Jeong W Pak Abstract Purpose: To quantitatively evaluate the relationship between drusen area from photographs and drusen [a1.1]volume from SDOCT volume scans with respect to baseline association, AREDS Severity Scale, and change in these measurements over time. Methods: In a set of 88 eyes with non-advanced AMD (median …