Ophthalmology Commons^™

A Topology-Aware Extension Of Guttae Area Ratio In Fuchs Endothelial Corneal Dystrophy, Molly Orlick, Henry Bair

Wills Eye Hospital Papers

No abstract provided.

Apostel-R Recommendations For Reporting Retinal Optical Coherence Tomography Studies In Rodents, Frederike Cosima Oertel, Delia Cabrera Debuc, Peter A. Calabresi, Mei Chen, Christian Cordano, Michael Dietrich, Nicolas Feltgen, Oliver Gramlich, Ari J. Green, Janos Groh, Su-Chun Huang, Benjamin Knier, Thomas Korn, Letizia Leocani, Anat Loewenstein, Christian Van Oterendorp, Tunde Peto, Sven Schippling, Leopold Schmetterer, Steffen Schmitz-Valckenberg, Mathias W. Seeliger, Kenneth S. Shindler, Joel Schuman, Mustafa Sindi, Adnan Tufail, Jui-Kai Wang, Sebastian Wolf, Yuyi You, Martin Zinkernagel, Wolf Lagrèze, Philipp Albrecht

Department of Medicine Faculty Papers

BACKGROUND AND OBJECTIVES: Retinal optical coherence tomography (OCT) in rodent models has been used to longitudinally image retinal changes, to define end points for more costly or time-consuming experiments, and to better understand the pathophysiology underlying OCT findings in human diseases. No standardization of rodent OCT reporting currently exists. Here, we aim to establish consensus recommendation for reporting results from retinal OCT studies in rodents.

METHODS: Initial recommendations were developed based on the APOSTEL criteria for quantitative OCT reporting in humans by a core team. Using a modified Delphi process, an expert panel of rodent OCT researchers (N = 31) …

Predictors Of Final Visual Outcome In Patients With Leber Hereditary Optic Neuropathy Treated With Lenadogene Nolparvovec Gene Therapy, Robert C Sergott, Valerio Carelli, Nancy Newman, Valérie Biousse, Patrick Yu-Wai-Man, Catherine Vignal-Clermont, Constant Josse, Magali Taiel, José-Alain Sahel, Piero Barboni

Wills Eye Hospital Papers

PURPOSE: This exploratory analysis aimed to identify predictive factors of final best-corrected visual acuity (BCVA) in patients with Leber hereditary optic neuropathy (LHON) harboring the m.11778G>A mutation who received lenadogene nolparvovec gene therapy.

METHODS: The following covariates were individually evaluated as possible factors associated with improved final BCVA: age, gender, timing of treatment, baseline BCVA value, and baseline optical coherence tomography (OCT) parameters. Univariate analyses were performed from three phase 3 studies (RESCUE, REVERSE, and REFLECT), using BCVA at 1.5 years post-treatment as the dependent variable.

RESULTS: In 113 eyes treated at least 6 months after disease onset, the …

Normative Variability In Retinal Nerve Fiber Layer Thickness: Does It Matter Where The Peaks Are?, Sowjanya Gowrisankaran, Ashkan Abbasi, Xubo Song, Joel Schuman, Gadi Wollstein, Bhavna Antony, Hiroshi Ishikawa

Wills Eye Hospital Papers

PURPOSE: Retinal nerve fiber layer thickness (RNFLT), a glaucoma biomarker, has a wide normative range affecting its sensitivity and specificity for abnormality detection. The interindividual RNFLT peak location variability contribution to this wide normative range has not been directly evaluated. The purpose of this study is to assess the effect of RNFLT peak normalization (PN) on normative variability.

METHODS: Circumpapillary RNFLT profiles at 1.7 mm radius from the optic nerve head (ONH) were re-sampled from optical coherence tomography (OCT) volumes (Cirrus HD-OCT, 200 × 200) obtained from one eye of 83 healthy individuals. Fovea-ONH axis (FOA) was calculated from corresponding …

Artificial Intelligence For Optical Coherence Tomography In Glaucoma, Mak B. Djulbegovic, Henry Bair, David J. Taylor Gonzalez, Hiroshi Ishikawa, Gadi Wollstein, Joel S. Schuman

Wills Eye Hospital Papers

PURPOSE: The integration of artificial intelligence (AI), particularly deep learning (DL), with optical coherence tomography (OCT) offers significant opportunities in the diagnosis and management of glaucoma. This article explores the application of various DL models in enhancing OCT capabilities and addresses the challenges associated with their clinical implementation.

METHODS: A review of articles utilizing DL models was conducted, including convolutional neural networks (CNNs), recurrent neural networks (RNNs), generative adversarial networks (GANs), autoencoders, and large language models (LLMs). Key developments and practical applications of these models in OCT image analysis were emphasized, particularly in the context of enhancing image quality, glaucoma …

Transformer-Based Deep Learning Prediction Of 10-Degree Humphrey Visual Field Tests From 24-Degree Data, Min Shi, Anagha Lokhande, Yu Tian, Yan Luo, Mohammad Eslami, Saber Kazeminasab, Tobias Elze, Lucy Shen, Louis Pasquale, Sarah Wellik, Carlos Gustavo De Moraes, Jonathan Myers, Nazlee Zebardast, David Friedman, Michael Boland, Mengyu Wang

Wills Eye Hospital Papers

PURPOSE: To predict 10-2 Humphrey visual fields (VFs) from 24-2 VFs and associated non-total deviation features using deep learning.

METHODS: We included 5189 reliable 24-2 and 10-2 VF pairs from 2236 patients, and 28,409 reliable pairs of macular OCT scans and 24-2 VF from 19,527 eyes of 11,560 patients. We developed a transformer-based deep learning model using 52 total deviation values and nine VF test features to predict 68 10-2 total deviation values. The mean absolute error, root mean square error, and the R2 were evaluation metrics. We further evaluated whether the predicted 10-2 VFs can improve the structure-function relationship …

Retinal Dystrophies Associated With Peripherin-2: Genetic Spectrum And Novel Clinical Observations In 241 Patients, Rachael C. Heath Jeffery, Jennifer A. Thompson, Johnny Lo, Enid S. Chelva, Sean Armstrong, Jose S. Pulido, Rebecca Procopio, Andrea L. Vincent, Lorenzo Bianco, Maurizio Battaglia Parodi, Lucia Ziccardi, Giulio Antonelli, Lucilla Barbano, João P. Marques, Sara Geada, Ana L. Carvalho, Wei C. Tang, Choi M. Chan, Camiel J. F. Boon, Jonathan Hensman, Ta-Ching Chen, Chien-Yu Lin, Pei-Lung Chen, Ajoy Vincent, Anupreet Tumber, Elise Heon, John R. Grigg, Robyn V. Jamieson, Elisa E. Cornish, Benjamin M. Nash, Shyamanga Borooah, Lauren N. Ayton, Alexis Ceecee Britten-Jones, Thomas L. Edwards, Jonathan B. Ruddle, Abhishek Sharma, Rowan G. Porter, Tina M. Lamey, Terri L. Mclaren, Samuel Mclenachan, Danial Roshandel, Fred K. Chen

Wills Eye Hospital Papers

PURPOSE: To describe the clinical, electrophysiological and genetic spectrum of inherited retinal diseases associated with variants in the PRPH2 gene.

METHODS: A total of 241 patients from 168 families across 15 sites in 9 countries with pathogenic or likely pathogenic variants in PRPH2 were included. Records were reviewed for age at symptom onset, visual acuity, full-field ERG, fundus colour photography, fundus autofluorescence (FAF), and SD-OCT. Images were graded into six phenotypes. Statistical analyses were performed to determine genotype-phenotype correlations.

RESULTS: The median age at symptom onset was 40 years (range, 4-78 years). FAF phenotypes included normal (5%), butterfly pattern dystrophy, …

Using Three-Dimensional Printed Models For Trainee Orbital Fracture Education, Martina Rama, Lauren Schlegel, Douglas M. Wisner, Robert S. Pugliese, Sathyadeepak Ramesh, Robert Penne, Alison Watson

Wills Eye Hospital Papers

BACKGROUND: Three-dimensional printing is an underutilized technology in ophthalmology training; its use must be explored in complex educational scenarios. This study described a novel approach to trainee education of orbital fracture repair utilizing three-dimensional (3D) printed models as a teaching tool.

METHODS: Ophthalmology residents and oculoplastic fellows from multiple training institutions underwent an educational session on orbital fractures, learning through four different models. Participants analyzed orbital fractures through computerized tomography (CT) imaging alone and then utilizing CT imaging with the aid of a 3D printed model. Participants completed a questionnaire assessing their understanding of the fracture pattern and surgical approach. …

Identification Of The Vibrational Optical Coherence Tomography Corneal Cellular Peak, Nathalie D. Daher, Ahmed Saeed Saad, Hiram J. Jimenez, Tatyana Milman, Orlando G. Gonzalez-Martinez, Tanmay S. Deshmukh, Jose S. Pulido, Frederick H. Silver, Dominick A. Benedetto, Christopher J. Rapuano, Zeba A. Syed

Wills Eye Hospital Papers

Purpose: Our team previously identified the presence of five corneal resonant frequency (RF) peaks in healthy volunteers using vibrational optical coherence tomography (VOCT). Prior studies have suggested that the ≤100 Hz RF peak represents the cellular element of tissue. The aim of this study was to confirm that this peak reflects the human corneal cellular component using VOCT and histological analysis.

Methods: Two human research globes were obtained from the same donor, and VOCT measurements were collected from the full-thickness corneas. A microkeratome was then used to create serial-free corneal caps from each cornea, with VOCT performed on the residual …

In Vivo Determination Of The Human Corneal Elastic Modulus Using Vibrational Optical Coherence Tomography, Marcos A. Crespo, Hiram J. Jimenez, Tanmay Deshmukh, Jose S. Pulido, Ahmed Saeed Saad, Frederick H Silver, Dominick A Benedetto, Christopher J Rapuano, Zeba Syed

Wills Eye Hospital Papers

Purpose: To determine the in vivo elastic modulus of the human cornea using vibrational optical coherence tomography (VOCT).

Methods: Vibrational analysis coupled with optical coherence tomography (OCT) was used to obtain the resonant frequency (RF) and elastic modulus of corneal structural components. VOCT corneal thickness values were measured using OCT images and correlated with corneal thickness determined with Pentacam (Oculus, Wetzlar, Germany). Moduli were obtained at two locations: central cornea (CC) and inferior cornea (IC). Measurements were obtained with and without anesthetic eye drops to assess their effect on the modulus measurements.

Results: VOCT thickness values correlated positively (R2 = …

Commentary: Ganglion Cell Complex Of Retinal Layer Thickness By Optical Coherence Tomography In Cases Of Multiple Sclerosis Without Optic Neuritis Compared To Healthy Eyes, Padmaja Sudhakar

Neurology Faculty Publications

No abstract provided.

Pretty Peachy., Li-Anne Lim, Basil K. Williams, Carol L. Shields

Wills Eye Hospital Papers

No abstract provided.

Optical Coherence Tomography Angiography Features Of Iris Racemose Hemangioma In 4 Cases., Jason L. Chien, Kareem Sioufi, Sandor Ferenczy, Emil Anthony T. Say, Carol L. Shields

Wills Eye Hospital Papers

Importance: Optical coherence tomography angiography (OCTA) allows visualization of iris racemose hemangioma course and its relation to the normal iris microvasculature.

Objective: To describe OCTA features of iris racemose hemangioma.

Design, Setting, and Participants: Descriptive, noncomparative case series at a tertiary referral center (Ocular Oncology Service of Wills Eye Hospital). Patients diagnosed with unilateral iris racemose hemangioma were included in the study.

Main Outcomes and Measures: Features of iris racemose hemangioma on OCTA.

Results: Four eyes of 4 patients with unilateral iris racemose hemangioma were included in the study. Mean patient age was 50 years, all patients were white, and …

Voxel Based Morphometry In Optical Coherence Tomography: Validation & Core Findings, Bhavna J. Antony, Min Chen, Aaron Carass, Bruno M. Jedynak, Omar Al-Louzi, Sharon D. Solomon, Shiv Saidha, Peter Calabresi, Jerry L. Prince

Mathematics and Statistics Faculty Publications and Presentations

Optical coherence tomography (OCT) of the human retina is now becoming established as an important modality for the detection and tracking of various ocular diseases. Voxel based morphometry (VBM) is a long standing neuroimaging analysis technique that allows for the exploration of the regional differences in the brain. There has been limited work done in developing registration based methods for OCT, which has hampered the advancement of VBM analyses in OCT based population studies. Following on from our recent development of an OCT registration method, we explore the potential benefits of VBM analysis in cohorts of healthy controls (HCs) and …

Outcomes With As-Needed Ranibizumab After Initial Monthly Therapy: Long-Term Outcomes Of The Phase Iii Ride And Rise Trials., David S. Boyer, Quan Dong Nguyen, David M. Brown, Karen Basu, Jason S. Ehrlich

Journal Articles: Ophthalmology

PURPOSE: To determine whether the efficacy and safety achieved with monthly ranibizumab as treatment for diabetic macular edema (DME) can be maintained with less-than-monthly treatment.

DESIGN: Open-label extension (OLE) phase of randomized, sham-controlled phase III trials: RIDE (NCT00473382) and RISE (NCT00473330).

PARTICIPANTS: Five hundred of 582 adults who completed the 36-month randomized core studies elected to enter the OLE.

METHODS: All patients participating in the OLE were eligible to receive 0.5 mg ranibizumab according to predefined re-treatment criteria: Treatment was administered when DME was identified by the investigator on optical coherence tomography or when best-corrected visual acuity (BCVA) worsened by …

High-Speed Optical Coherence Tomography As A Reliable Adjuvant Tool To Grade Ocular Anterior Chamber Inflammation., Ann O. Igbre, Mario C. Rico, Sunir Garg

Wills Eye Hospital Papers

PURPOSE: To evaluate the high-speed anterior segment optical coherence tomography (AS-OCT) grading of the AS inflammation in patients with ocular inflammation.

METHODS: A retrospective consecutive case series study. Patients with clinically visible AS inflammation in at least one eye underwent AS-OCT (Visante; Zeiss Meditec) with three to eight line scans per eye, performed by a trained masked examiner. The images were reviewed for hyperreflective spots, noise, and artifact, and these were correlated to clinical examination.

RESULTS: Seventy-eight eyes of 41 patients were imaged. Forty-seven eyes had anterior chamber cells on clinical examination, and 68 had hyperreflective spots visible on AS-OCT. …

Retina-Simulating Phantom For Optical Coherence Tomography., Jigesh Baxi, William Calhoun, Yasir Jamal Sepah, Daniel X. Hammer, Ilko Ilev, T. Joshua Pfefer, Quan Dong Nguyen, Anant Agrawal

Journal Articles: Ophthalmology

Optical coherence tomography (OCT) is a rapidly growing imaging modality, particularly in the field of ophthalmology. Accurate early diagnosis of diseases requires consistent and validated imaging performance. In contrast to more well-established medical imaging modalities, no standardized test methods currently exist for OCT quality assurance. We developed a retinal phantom which mimics the thickness and near-infrared optical properties of each anatomical retinal layer as well as the surface topography of the foveal pit. The fabrication process involves layer-by-layer spin coating of nanoparticle-embedded silicone films followed by laser micro-etching to modify the surface topography. The thickness of each layer and dimensions …

Automatic And Robust Calibration Of Optical Detector Arrays For Biomedical Diffuse Optical Spectroscopy, Michael A. Mastanduno, Shudong Jiang, Roberta Diflorio-Alexander, Brian W. Pogue, Keith Paulsen

Dartmouth Scholarship

The design and testing of a new, fully automated, calibration approach is described. The process was used to calibrate an image-guided diffuse optical spectroscopy system with 16 photomultiplier tubes (PMTs), but can be extended to any large array of optical detectors and associated imaging geometry. The design goals were accomplished by developing a routine for robust automated calibration of the multi-detector array within 45 minutes. Our process was able to characterize individual detectors to a median norm of the residuals of 0.03 V for amplitude and 4.4 degrees in phase and achieved less than 5% variation between all the detectors …