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  1. Book ; Thesis: Der retinale Venendruck gemessen mit der Kontaktglasdynamometrie und einem neuen Verfahren

    Wetzk, Emilie / Terai, Naim / Siepmann, Timo

    2020  

    Institution Klinik und Poliklinik für Augenheilkunde
    Author's details von Emilie Wetzk
    Language German
    Size IV, 109 Blätter, Illustrationen, Diagramme, 31 cm
    Publishing place Dresden
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Dissertation, Technische Universität Dresden, 2021
    HBZ-ID HT021707173
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    2023 E 162 order for loan Magazin

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  2. Article ; Online: Measurement of the retinal venous pressure with a new instrument in healthy subjects.

    Stodtmeister, Richard / Wetzk, Emilie / Herber, Robert / Pillunat, Karin R / Pillunat, Lutz E

    Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie

    2021  Volume 260, Issue 4, Page(s) 1237–1244

    Abstract: Background: The retinal venous pressure (RVP) is a determining factor for the blood supply of the retina as well as the optic nerve head and until recently has been measured by contact lens dynamometry (CLD). A new method has been developed, potentially ...

    Abstract Background: The retinal venous pressure (RVP) is a determining factor for the blood supply of the retina as well as the optic nerve head and until recently has been measured by contact lens dynamometry (CLD). A new method has been developed, potentially offering better acceptance. The applicability and the results of both methods were compared.
    Methods: The type of this study is cross sectional. The subjects were 36 healthy volunteers, age 26 ± 5 years (mean ± s). Tonometry: rebound tonometer (RT) (iCare). The measurements were performed during an increase in airway pressure of 20 mmHg (Valsalva manoeuvre). Principle of RVP measurement: the central retinal vein (CRV) is observed during an increase of intraocular pressure (IOP) and at the start of pulsation, which corresponds with the RVP. Two different instruments for the IOP enhancement where used: contact lens dynamometry and the new instrument, IOPstim.
    Principle: a deflated balloon of 8 mm diameter-placed on the sclera laterally of the cornea-is filled with air. As soon as a venous pulsation occurs, filling is stopped and the IOP is measured, equalling the RVP. Examination procedure: randomization of the sequence: CLD or IOPstim, IOP, mydriasis, IOP three single measurements (SM) of the IOP with RT or of the pressure increase with CLD at an airway pressure of 20 mmHg, 5 min break, IOP, and three SM using the second method at equal pressure (20 mmHg).
    Results: Spontaneous pulsation of the CRV was present in all 36 subjects. Pressures are given in mmHg. IOP in mydriasis 15.6 ± 3.3 (m ± s). Median RVP (MRVP)) of the three SM: CLD/IOPstim, 37.7 ± 5.2/24.7 ± 4.8 (t test: p < 0.001). Range of SM: 3.2 ± 1.8/2.9 ± 1.3 (t test: p = 0.36). Intraclass correlation coefficient (ICC) of SM: 0.88/0.83. ANOVA in SM: p = 0.48/0.08. MRVP CLD minus MRVP IOPstim: 13.0 ± 5.6. Ratio MRVP CLD/MRVP IOPstim: 1.56 ± 3.1. Cooperation and agreeability were slightly better with the IOPstim.
    Conclusion: This first study with the IOPstim in humans was deliberately performed in healthy volunteers using Valsalva conditions. As demonstrated by ICC and ANOVA, reproducible SM can be obtained by both methods and the range of the SM does not differ greatly. The higher MRVP in CLD could be explained by the different directions of the force vectors.
    MeSH term(s) Adult ; Cross-Sectional Studies ; Healthy Volunteers ; Humans ; Intraocular Pressure ; Reproducibility of Results ; Retina ; Tonometry, Ocular/methods ; Venous Pressure/physiology ; Young Adult
    Language English
    Publishing date 2021-09-09
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 8435-9
    ISSN 1435-702X ; 0721-832X
    ISSN (online) 1435-702X
    ISSN 0721-832X
    DOI 10.1007/s00417-021-05374-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
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