Histomorphometry of the circular peripapillary arterial ring of Zinn-Haller in normal eyes and eyes with secondary angle-closure glaucoma

• Verfasst von: Jonas, Jost B. [VerfasserIn]
• Verfasst von: Jonas, Shefali B. [VerfasserIn]
• Titel: Histomorphometry of the circular peripapillary arterial ring of Zinn-Haller in normal eyes and eyes with secondary angle-closure glaucoma
• Verf.angabe: Jost B. Jonas and Shefali B. Jonas (Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany)
• E-Jahr: 2010
• Jahr: [December 2010]
• Umfang: 6 S.
• Illustrationen: Illustrationen
• Fussnoten: First published: 14 October 2010 ; Gesehen am 28.08.2023
• Titel Quelle: Enthalten in: Acta ophthalmologica
• Ort Quelle: Oxford : Blackwell, 2008
• Jahr Quelle: 2010
• Band/Heft Quelle: 88(2010), 8 vom: Dez., Seite e317-e322
• ISSN Quelle: 1755-3768
• DOI: doi:10.1111/j.1755-3768.2010.02022.x
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: cerebrospinal fluid
• Sach-SW: circular peripapillary arterial ring Zinn-Haller
• Sach-SW: glaucoma
• Sach-SW: lamina cribrosa
• Sach-SW: optic disc
• K10plus-PPN: 1858116627

Abstract

Purpose: To examine the location and size of the peripapillary arterial circle of Zinn-Haller (PACZH) and its associations with other eye measures in normal eyes and eyes with secondary angle-closure glaucoma. Methods: The study included 29 human globes enucleated because of malignant choroidal melanoma (n = 19) (control group) or because of secondary angle-closure glaucoma (n = 10). Anterior-posterior histological sections were morphometrically evaluated. Results: The PACZH was present in all eyes. The glaucoma group and the control group did not vary significantly in the distance from the PACZH to Bruch’s membrane (297 ± 67 versus 270 ± 67 μm; p = 0.29), optic disc border (281 ± 103 versus 391 ± 170 μm; p = 0.07), optic disc centre (1059 ± 191 versus 978 ± 205 μm; p = 0.30) and retrobulbar cerebrospinal fluid space (173 ± 58 versus 172 ± 81 μm; p = 0.97) nor in the minimal PACZH diameter (39 ± 18 versus 36 ± 18 μm; p = 0.74) and maximal PACZH diameter (78 ± 37 versus 65 ± 25 μm; p = 0.36). The PACZH location, measured as distance from Bruch’s membrane, disc border, disc centre and cerebrospinal fluid space, was not significantly associated with axial length (p > 0.39), horizontal globe diameter (p > 0.17) and vertical globe diameter (p > 0.22). Both diameters were statistically independent of axial length (p = 0.72 and p = 0.58, respectively), horizontal globe diameter (p = 0.60 and p = 0.41, respectively) and vertical globe diameter (p = 0.64 and p = 0.52, respectively). All parameters were statistically independent of age (p > 0.10) and gender (p > 0.10). Conclusions: The PACZH was present in all human eyes examined and did not vary significantly in location and diameter between eyes with secondary angle-closure glaucoma and nonglaucomatous eyes, nor between myopic versus hyperopic eyes.