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3 results on '"Robert C. Gunzenhauser"'

1. Rhegmatogenous retinal detachment after retinopathy of prematurity laser treatment

Author

Robert C. Gunzenhauser, Yoon H. Lee, and Irena Tsui

Subjects
Laser treatment, Rhegmatogenous retinal detachment, ROP, Ophthalmology, RE1-994
Abstract

Purpose: Rhegmatogenous retinal detachment (RRD) after retinopathy of prematurity (ROP) laser is rare but has been reported to occur at the border of heavy laser or in combination with tractional retinal detachment (TRD). We describe a rare case of a RRD that developed during treatment for ROP with both laser and intravitreal injections. Observations: The retinal detachment resolved with scleral buckling surgery with residual macular atrophy. Conclusions and Importance: This case highlights the importance of retinal imaging, careful funduscopic examination, and consideration of the risk of RRDs after intravitreal injections and laser in neonates with ROP.

Published
2023
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2. The development and spontaneous resolution of a full-thickness macular hole in bartonella henselae neuroretinitis in a 12-year-old boy

Author

Robert C. Gunzenhauser, Shaina M. Rubino, Vishak John, and Margaret A. Greven

Subjects
Ophthalmology, RE1-994
Abstract

Purpose: To describe an unusual case of Bartonella henselae neuroretinitis complicated by macular hole (MH) development. Observations: A full-thickness macular hole developed in a 12-year-old boy in association with serology-confirmed Bartonella henselae neuroretinitis. Following a period of observation, the MH closed without intervention. Conclusion and importance: MH may occur as a complication of neuroretinitis secondary to Cat-Scratch Disease. Keywords: Retina, Macular hole, Neuroretinitis

Published
2019
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3. The role of Müller cells in tractional macular disorders: an optical coherence tomography study and physical model of mechanical force transmission

Author

Rodolfo Repetto, Marta S. Figueroa, Mariantonia Ferrara, Giulia Delledonne, Roberto dell'Omo, Ferdinando Bottoni, Robert C. Gunzenhauser, Christine A. Curcio, Antonio Scialdone, Gianni Virgili, Jean-Pierre Hubschman, Patrizio Seidenari, Andrea Govetto, Mario R. Romano, Adrian Au, and David Sarraf

Subjects
Male, Fovea Centralis, retina, genetic structures, Visual Acuity, Ophthalmology & Optometry, Foveoschisis, chemistry.chemical_compound, Theoretical, Foveal, Models, 80 and over, Medicine, Contrast (vision), anatomy, imaging, macula, Tomography, media_common, Aged, 80 and over, medicine.diagnostic_test, Parafovea, Middle Aged, Sensory Systems, Biomechanical Phenomena, medicine.anatomical_structure, Public Health and Health Services, Female, Tomography, Optical Coherence, Adult, medicine.medical_specialty, Retinoschisis, media_common.quotation_subject, Ependymoglial Cells, Clinical Sciences, Slit Lamp Microscopy, Cellular and Molecular Neuroscience, Optical coherence tomography, Opthalmology and Optometry, Ophthalmology, Humans, Retrospective Studies, Aged, Retina, business.industry, Retinal, Models, Theoretical, Retinal Perforations, eye diseases, Transmission (telecommunications), chemistry, Optical Coherence, sense organs, business, Follow-Up Studies
Abstract

BackgroundTo explore the role of foveal and parafoveal Müller cells in the morphology and pathophysiology of tractional macular disorders with a mathematical model of mechanical force transmission.MethodsIn this retrospective observational study, spectral-domain optical coherence tomography images of tractional lamellar macular holes and patients with myopic foveoschisis were reviewed and analysed with a mathematical model of force transmission. Parafoveal z-shaped Müller cells were modelled as a structure composed of three rigid rods, named R1, R2 and R3. The angle formed between the rods was referred to as θ . R1, R2 and R3 lengths as well as the variation of the angle θ were measured and correlated with best corrected visual acuity (BCVA).ResultsIn tractional lamellar macular holes, there was a significant reduction of the angle θ towards the foveal centre (pConclusionParafoveal Müller cells in the Henle fibre layer may guarantee structural stability of the parafovea by increasing retinal compliance and resistance to mechanical stress. Small values of the angle θ were related to worse BCVA possibly due to damage to Müller cell processes and photoreceptor’s axons.

Published
2020

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