TY - JOUR
T1 - Dynamic volume-rendered optical coherence tomography pupillometry
AU - Maloca, Peter M.
AU - de Carvalho, Emanuel R.
AU - Hasler, Pascal W.
AU - Balaskas, Konstantinos
AU - Inglin, Nadja
AU - Petzold, Axel
AU - Egan, Catherine
AU - Tufail, Adnan
AU - Scholl, Hendrik P. N.
AU - Valmaggia, Philippe
N1 - Funding Information:
Adnan Tufail received a portion of funding from the Department of Health’s NIHR Biomedical Research Centre for Ophthalmology at Moorfields Eye Hospital and UCL Institute of Ophthalmology, United Kingdom, and is a consultant for Heidelberg Engineering. Peter Maloca owns intellectual properties on speckle‐denoising. Peter Maloca and Pascal Hasler receive lecture fees from Heidelberg. Dr. Scholl is member of the Scientific Advisory Board of: Astellas Institute for Regenerative Medicine; Gensight Biologics; Ionis Pharmaceuticals, Inc.; Gyroscope Therapeutics Ltd.; Janssen Research & Development, LLC (Johnson & Johnson); and Pharma Research & Early Development (pRED) of F. Hoffmann‐La Roche Ltd; Novartis Pharma AG (CORE). Dr. Scholl is paid consultant of: Boehringer Ingelheim Pharma GmbH & Co; Gerson Lehrman Group; and Guidepoint. Dr. Scholl is member of the Data Monitoring and Safety Board/Committee of Belite Bio and ReNeuron Group Plc/Ora Inc. and member of the Steering Committee of Novo Nordisk (FOCUS trial). Dr. Scholl is co‐director of the Institute of Molecular and Clinical Ophthalmology Basel (IOB), which is constituted as a non‐profit foundation and receives funding from the University of Basel, the University Hospital Basel, Novartis, and the government of Basel‐Stadt. These arrangements have been reviewed and approved by the University of Basel (Universitätsspital Basel, USB) in accordance with its conflict of interest policies.
Publisher Copyright:
© 2021 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd
PY - 2021
Y1 - 2021
N2 - Purpose: To assess intrapupillary space (IPS) changes in healthy subjects with regard to decreased iris motility in patients with pseudoexfoliation glaucoma (PEXG) or non-arteritic anterior ischaemic optic neuropathy (NAION) in a feasibility study in a clinical environment. Methods: Scotopic and photopic IPS measurements using three-dimensionally rendered swept-source optical coherence tomography (SS-OCT) data were obtained and compared for all subjects. Intrapupillary space (IPS) parameters were evaluated such as absolute volumetric differences, relative light response for volumetric ratios and pupillary ejection fraction (PEF) for functional contraction measurements. Results: From a total of 122 IPS from 66 subjects, 106 IPS were eligible for comparison providing values for 72 normal, 30 PEXG and 4 NAION eyes. In healthy, PEXG and NAION subjects, scotopic overall mean IPS was 8.90, 3.45 and 4.16 mm3, and photopic overall mean IPS was 0.87, 0.74 and 1.13 mm3, respectively. Three-dimensional contractility showed a mean absolute difference of 8.03 mm3 for normals (defined as 100% contractility), 2.72 mm3 for PEXG (33.88% of normal) and 3.03 mm3 for NAION (38.50% of normal) with a relative light response ratio between scotopic and photopic volumes of 10.26 (100%), 4.69 (45.70%) and 3.67 (35.78%), respectively. Pupillary ejection fraction (PEF) showed a contractile pupillary emptying of 88.11% for normals, 76.92% for PEXG and 70.91% for NAION patients. Conclusion: This 3D pupillometry OCT assessment allows for quantitative measurements of pupil function, contractility and response to light. More specifically, PEF is presented as a potential (neuro)-pupillary outcome measure that could be useful in the monitoring of ophthalmic disorders that affect pupillary function.
AB - Purpose: To assess intrapupillary space (IPS) changes in healthy subjects with regard to decreased iris motility in patients with pseudoexfoliation glaucoma (PEXG) or non-arteritic anterior ischaemic optic neuropathy (NAION) in a feasibility study in a clinical environment. Methods: Scotopic and photopic IPS measurements using three-dimensionally rendered swept-source optical coherence tomography (SS-OCT) data were obtained and compared for all subjects. Intrapupillary space (IPS) parameters were evaluated such as absolute volumetric differences, relative light response for volumetric ratios and pupillary ejection fraction (PEF) for functional contraction measurements. Results: From a total of 122 IPS from 66 subjects, 106 IPS were eligible for comparison providing values for 72 normal, 30 PEXG and 4 NAION eyes. In healthy, PEXG and NAION subjects, scotopic overall mean IPS was 8.90, 3.45 and 4.16 mm3, and photopic overall mean IPS was 0.87, 0.74 and 1.13 mm3, respectively. Three-dimensional contractility showed a mean absolute difference of 8.03 mm3 for normals (defined as 100% contractility), 2.72 mm3 for PEXG (33.88% of normal) and 3.03 mm3 for NAION (38.50% of normal) with a relative light response ratio between scotopic and photopic volumes of 10.26 (100%), 4.69 (45.70%) and 3.67 (35.78%), respectively. Pupillary ejection fraction (PEF) showed a contractile pupillary emptying of 88.11% for normals, 76.92% for PEXG and 70.91% for NAION patients. Conclusion: This 3D pupillometry OCT assessment allows for quantitative measurements of pupil function, contractility and response to light. More specifically, PEF is presented as a potential (neuro)-pupillary outcome measure that could be useful in the monitoring of ophthalmic disorders that affect pupillary function.
KW - contractility
KW - non-arteritic anterior ischaemic optic neuropathy
KW - optical coherence tomography
KW - pseudoexfoliation glaucoma
KW - pupillary ejection fraction
UR - https://www.scopus.com/pages/publications/85118585665
U2 - 10.1111/aos.15063
DO - 10.1111/aos.15063
M3 - Article
C2 - 34750988
SN - 1755-375X
JO - Acta ophthalmologica
JF - Acta ophthalmologica
ER -