Ursula Hahn

578 total citations
37 papers, 417 citations indexed

About

Ursula Hahn is a scholar working on General Health Professions, Ophthalmology and Public Health, Environmental and Occupational Health. According to data from OpenAlex, Ursula Hahn has authored 37 papers receiving a total of 417 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in General Health Professions, 11 papers in Ophthalmology and 8 papers in Public Health, Environmental and Occupational Health. Recurrent topics in Ursula Hahn's work include Health and Medical Studies (12 papers), Intraocular Surgery and Lenses (7 papers) and Medical and Health Sciences Research (6 papers). Ursula Hahn is often cited by papers focused on Health and Medical Studies (12 papers), Intraocular Surgery and Lenses (7 papers) and Medical and Health Sciences Research (6 papers). Ursula Hahn collaborates with scholars based in Germany, Brazil and Netherlands. Ursula Hahn's co-authors include Eckhart G. Hahn, E O Riecken, Frank Krummenauer, Andreas Stallmach, H.-J. Merker, Stefanie Schmickler, Irmingard M. Neuhann, Detlef Schuppan, Florian Kretz and J. Weindler and has published in prestigious journals such as Gastroenterology, Gut and Ophthalmology.

In The Last Decade

Ursula Hahn

34 papers receiving 385 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ursula Hahn Germany	12	150	113	109	72	72	37	417
Roseline Duke Nigeria	12	96 0.6×	74 0.7×	133 1.2×	69 1.0×	19 0.3×	38	393
Susan Forster United States	13	118 0.8×	87 0.8×	73 0.7×	93 1.3×	12 0.2×	32	432
Philip Kerr United States	11	30 0.2×	53 0.5×	28 0.3×	78 1.1×	122 1.7×	23	447
Steven Zhang United States	11	69 0.5×	25 0.2×	108 1.0×	104 1.4×	76 1.1×	23	523
Paul Cockrum United States	13	141 0.9×	64 0.6×	55 0.5×	30 0.4×	102 1.4×	62	401
Renée A. Harrison United States	9	26 0.2×	128 1.1×	22 0.2×	62 0.9×	244 3.4×	15	385
Luis Francisco Pérez Spain	10	25 0.2×	133 1.2×	14 0.1×	89 1.2×	12 0.2×	31	314
Xuan Shi China	10	126 0.8×	16 0.1×	88 0.8×	70 1.0×	17 0.2×	28	325
David L. Young United States	11	61 0.4×	98 0.9×	45 0.4×	216 3.0×	58 0.8×	13	591
Ankona Banerjee United States	12	35 0.2×	24 0.2×	18 0.2×	109 1.5×	71 1.0×	31	541

Countries citing papers authored by Ursula Hahn

Since Specialization

Citations

This map shows the geographic impact of Ursula Hahn's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ursula Hahn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ursula Hahn more than expected).

Fields of papers citing papers by Ursula Hahn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ursula Hahn. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ursula Hahn. The network helps show where Ursula Hahn may publish in the future.

Co-authorship network of co-authors of Ursula Hahn

This figure shows the co-authorship network connecting the top 25 collaborators of Ursula Hahn. A scholar is included among the top collaborators of Ursula Hahn based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ursula Hahn. Ursula Hahn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Agostini, Hansjürgen, et al.. (2022). Surgical Care in Specialist Ophthalmology Departments: Structure and Impact of the COVID-19 Pandemic. Klinische Monatsblätter für Augenheilkunde. 240(12). 1383–1393. 1 indexed citations

Hahn, Ursula, et al.. (2021). Angebotsstrukturen der ambulanten vertragsärztlichen Versorgung: Deutschland und andere dezentral organisierte Gesundheitssysteme. Das Gesundheitswesen. 83(5). 337–344. 2 indexed citations

Hahn, Ursula, et al.. (2019). Rotation of a toric intraocular lens with and without capsular tension ring: data from a multicenter non-inferiority randomized clinical trial (RCT). BMC Ophthalmology. 19(1). 143–143. 14 indexed citations

Diakonis, Vasilios F., et al.. (2019). Outcomes of combining a trifocal and a low-addition bifocal intraocular lens in patients seeking spectacle independence at all distances. Journal of Cataract & Refractive Surgery. 45(5). 620–629. 17 indexed citations

Hahn, Ursula, Frank Krummenauer, & Klaus Ludwig. (2018). 23G pars plana vitrectomy for vitreal floaters: prospective assessment of subjective self-reported visual impairment and surgery-related risks during the course of treatment. Graefe s Archive for Clinical and Experimental Ophthalmology. 256(6). 1089–1099. 10 indexed citations

Hahn, Ursula, et al.. (2018). Intersektorale augenmedizinische Facharztzentren und Versorgung auf dem Land. Gesundheitsökonomie & Qualitätsmanagement. 24(2). 69–77. 2 indexed citations

Hahn, Ursula, et al.. (2017). Angestellte und selbstständige Fachärzte in der vertragsärztlichen ophthalmologischen Versorgung. Der Ophthalmologe. 115(5). 400–408.

Hahn, Ursula, Tanja Hechler, Ulrike Witt, & Frank Krummenauer. (2015). Konzeption und Inhaltsvalidierung eines Fragebogens zu Informationsbedürfnissen bezüglich Dienstleistungen und Ansprechpartnern von sehbehinderten Menschen (FIDAS). Klinische Monatsblätter für Augenheilkunde. 232(12). 1402–1409. 1 indexed citations

Hahn, Ursula, Irmingard M. Neuhann, Stefanie Schmickler, & Frank Krummenauer. (2014). A methodological approach to identify external factors for indicator-based risk adjustment illustrated by a cataract surgery register. BMC Health Services Research. 14(1). 279–279. 1 indexed citations

10.

Hahn, Ursula, et al.. (2014). Fallzahlen und Erlöse in ophthalmologischen Haupt- und Belegabteilungen. Der Ophthalmologe. 112(7). 589–598. 2 indexed citations

11.

Hahn, Ursula, Bernd Bertram, Frank Krummenauer, et al.. (2013). Potenziale und Grenzen der geplanten obligatorischen Qualitätssicherung für Kataraktoperation (Qesü). Der Ophthalmologe. 110(4). 370–376. 1 indexed citations

12.

Hahn, Ursula, Frank Krummenauer, & Irmingard M. Neuhann. (2012). Ergebnisbezogene Erfolgsraten der Kataraktoperation. Der Ophthalmologe. 109(6). 575–582. 9 indexed citations

13.

Hahn, Ursula, Frank Krummenauer, Thomas Neuhann, et al.. (2011). Determination of Valid Benchmarks for Outcome Indicators in Cataract Surgery. Ophthalmology. 118(11). 2105–2112. 57 indexed citations

14.

Baum, Oliver, et al.. (2009). The rotational gas-phase spectrum of trans- and cis-HSSOH at 100 GHz. Journal of Molecular Spectroscopy. 257(1). 34–39. 11 indexed citations

15.

Hahn, Ursula, Andreas Stallmach, Eckhart G. Hahn, & E O Riecken. (1990). Basement membrane components are potent promoters of rat intestinal epithelial cell differentiation in vitro. Gastroenterology. 98(2). 322–335. 66 indexed citations

16.

Hahn, Ursula. (1990). Facts and Problems of the Intestinal Basement Membrane. Digestion. 46(2). 40–48. 8 indexed citations

17.

Stallmach, Andreas, Ursula Hahn, H.-J. Merker, Eckhart G. Hahn, & E O Riecken. (1989). Differentiation of rat intestinal epithelial cells is induced by organotypic mesenchymal cells in vitro.. Gut. 30(7). 959–970. 29 indexed citations

18.

Hahn, Ursula. (1988). Extracellular Matrix Proteins in Small-Intestinal Cell Cultures. Scandinavian Journal of Gastroenterology. 23(sup151). 70–78. 16 indexed citations

19.

Hahn, Ursula, et al.. (1987). Intestinal epithelial cells preferentially attach to a biomatrix derived from human intestinal mucosa.. Gut. 28(Suppl). 153–158. 13 indexed citations

20.

Hahn, Ursula, Detlef Schuppan, Eckhart G. Hahn, H.-J. Merker, & E O Riecken. (1987). Intestinal cells produce basement membrane proteins in vitro.. Gut. 28(Suppl). 143–151. 33 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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