@article{MikielewiczKotliarBarraqueretal.2011,
  author    = {Mikielewicz, Marek and Kotliar, Konstantin and Barraquer, Rafael I. and Michael, Ralph},
  title     = {Air-pulse corneal applanation signal curve parameters for the characterisation of keratoconus},
  series = {British Journal of Ophthalmology (eBJO)},
  volume    = {95},
  journal   = {British Journal of Ophthalmology (eBJO)},
  number    = {6},
  publisher = {BMJ Publ. Group},
  address   = {London},
  issn      = {1468-2079},
  pages     = {793 -- 798},
  year      = {2011},
  language  = {en}
}
@article{MenzelKotliarLanzl2009,
  author    = {Menzel, C. and Kotliar, Konstantin and Lanzl, I.},
  title     = {Retrospektive Untersuchung jahreszeitlich bedingter Einflussfaktoren auf den Augeninnendruck therapierter Glaukompatienten},
  series = {Der Ophthalmologe},
  volume    = {106},
  journal   = {Der Ophthalmologe},
  number    = {11},
  publisher = {-},
  isbn      = {1433-0423},
  pages     = {1006 -- 1011},
  year      = {2009},
  language  = {de}
}
@article{MartinGonzalezKotliarRiosMartinezetal.2014,
  author    = {Martin-Gonzalez, Anabel and Kotliar, Konstantin and Rios-Martinez, Jorge and Lanzl, Ines and Navab, Nassir},
  title     = {Mediated-reality magnification for macular degeneration rehabilitation},
  series = {Journal of Modern Optics},
  volume    = {61},
  journal   = {Journal of Modern Optics},
  number    = {17},
  publisher = {Taylor \& Francis},
  address   = {London},
  issn      = {1362-3044},
  doi       = {10.1080/09500340.2014.936110},
  pages     = {1400 -- 1408},
  year      = {2014},
  language  = {en}
}
@article{MalanHamerKaeneletal.2020,
  author    = {Malan, Leone and Hamer, Mark and K{\"a}nel, Roland von and Kotliar, Konstantin and Wyk, Roelof D. van and Lambert, Gavin W. and Vilser, Walthard and Ziemssen, Tjalf and Schlaich, Markus P. and Smith, Wayne and Magnusson, Martin and Wentzel, Annemarie and Myburgh, Carlien E. and Steyn, Hendrik S. and Malan, Nico T.},
  title     = {Delayed retinal vein recovery responses indicate both non-adaptation to stress as well as increased risk for stroke: the SABPA study},
  series = {Cardiovascular Journal of Africa},
  volume    = {26},
  journal   = {Cardiovascular Journal of Africa},
  number    = {31},
  publisher = {Clinics Cardive Publishing},
  address   = {Durbanville},
  issn      = {1680-0745},
  doi       = {10.5830/CVJA-2020-031},
  pages     = {1 -- 12},
  year      = {2020},
  language  = {en}
}
@article{MaierFeuchtWinklervonMohrenfelsetal.2011,
  author    = {Maier, M. M. and Feucht, N. and Winkler von Mohrenfels, C. and Kotliar, Konstantin and Fabian, E. and Lohmann, C. P.},
  title     = {Nahtlose Cerclage mit Skleratunnelfixation. Sutureless Encircling Band - Clinical Experience},
  series = {Klinische Monatsbl{\"a}tter f{\"u}r Augenheilkunde},
  volume    = {228},
  journal   = {Klinische Monatsbl{\"a}tter f{\"u}r Augenheilkunde},
  number    = {5},
  publisher = {Thieme},
  address   = {Stuttgart},
  isbn      = {0344-6360},
  pages     = {473 -- 476},
  year      = {2011},
  language  = {de}
}
@article{LapitanRogatkinPersheyevetal.2018,
  author    = {Lapitan, Denis G. and Rogatkin, Dmitrii A. and Persheyev, Sydulla K. and Kotliar, Konstantin},
  title     = {False spectra formation in the differential two-channel scheme of the laser Doppler flowmeter},
  series = {Biomedizinische Technik},
  volume    = {63},
  journal   = {Biomedizinische Technik},
  number    = {4},
  publisher = {De Gruyter},
  address   = {Berlin},
  issn      = {0013-5585},
  doi       = {10.1515/bmt-2017-0060},
  pages     = {439 -- 444},
  year      = {2018},
  abstract  = {Noise in the differential two-channel scheme of a classic laser Doppler flowmetry (LDF) instrument was studied. Formation of false spectral components in the output signal due to beating of electrical signals in the differential amplifier was found out. The improved block-diagram of the flowmeter was developed allowing to reduce the noise.},
  language  = {en}
}
@article{LanzlSeidovaMaieretal.2011,
  author    = {Lanzl, Ines M. and Seidova, Seid-Fatima and Maier, Mathias and Schmidt-Trucks{\"a}ss, Arno and Halle, Martin and Kotliar, Konstantin},
  title     = {Dynamic retinal vessel response to flicker in age-related macular degeneration patients before and after vascular endothelial growth factor inhibitor injection},
  series = {Acta Ophthalmologica},
  volume    = {89},
  journal   = {Acta Ophthalmologica},
  number    = {5},
  publisher = {Wiley},
  address   = {Weinheim},
  isbn      = {1755-3768},
  pages     = {472 -- 479},
  year      = {2011},
  language  = {en}
}
@article{LanzlSeidovaErbenetal.2010,
  author    = {Lanzl, Ines M. and Seidova, Seid-Fatima and Erben, A. and Th{\"u}rmel, K. and Kotliar, Konstantin},
  title     = {Diffuse stromale Hornhauttr{\"u}bungen und Ver{\"a}nderungen der H{\"a}nde},
  series = {Der Ophthalmologe},
  volume    = {107},
  journal   = {Der Ophthalmologe},
  number    = {4},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {1433-0423},
  doi       = {10.1007/s00347-009-2066-2},
  pages     = {363 -- 365},
  year      = {2010},
  abstract  = {Bilaterale stromale Hornhauttr{\"u}bungen sind f{\"u}r den Augenarzt eine differenzialdiagnostische Herausforderung. Im folgenden Beitrag werden 2 Patieninnen (30 und 36 Jahre) mit unterschiedlich stark ausgepr{\"a}gter stromaler diffuser Hornhauttr{\"u}bung vorgestellt. Patientin 1 war kleinw{\"u}chsig (114 cm) und Patientin 2 normal groß (172 cm). Beide Patientinnen wiesen ver{\"a}nderte Gelenkstrukturen an Hand und Fußgelenken sowie diffuse stromale Hornhauttr{\"u}bungen auf. Des Weiteren lagen eine Mitral- und Aorteninsuffizienz (Patientin 1) bzw. eine Aorteninsuffizienz (Patientin 2) vor. Die stromalen diffusen Hornhauttr{\"u}bungen ließen im Zusammenhang mit den Gelenkver{\"a}nderungen ein Scheie-Syndrom vermuten. Therapeutisch ist bei Patienten mit Visusminderung eine (lamell{\"a}re) Keratoplastik sinnvoll.},
  language  = {de}
}
@article{LanzlKotliar2017,
  author    = {Lanzl, I. and Kotliar, Konstantin},
  title     = {K{\"o}nnen Anti-VEGF-Injektionen Glaukom oder okul{\"a}re Hypertension verursachen?},
  series = {Klinische Monatsbl{\"a}tter f{\"u}r Augenheilkunde},
  volume    = {234},
  journal   = {Klinische Monatsbl{\"a}tter f{\"u}r Augenheilkunde},
  number    = {2},
  publisher = {Thieme},
  address   = {Stuttgart},
  issn      = {0023-2165},
  doi       = {10.1055/s-0043-101819},
  pages     = {191 -- 193},
  year      = {2017},
  language  = {de}
}
@article{KuertenKotliarFuestetal.2021,
  author    = {Kuerten, David and Kotliar, Konstantin and Fuest, Matthias and Walter, Peter and Hollstein, Muriel and Plange, Niklas},
  title     = {Does hemispheric vascular regulation differ significantly in glaucoma patients with altitudinal visual field asymmetry? A single-center, prospective study},
  series = {International Ophthalmology},
  volume    = {41},
  journal   = {International Ophthalmology},
  number    = {41},
  editor    = {Neri, Piergiorgio},
  publisher = {Springer},
  address   = {Berlin},
  isbn      = {1573-2630},
  doi       = {10.1007/s10792-021-01876-0},
  pages     = {3109 -- 3119},
  year      = {2021},
  abstract  = {Purpose Vascular risk factors and ocular perfusion are heatedly discussed in the pathogenesis of glaucoma. The retinal vessel analyzer (RVA, IMEDOS Systems, Germany) allows noninvasive measurement of retinal vessel regulation. Significant differences especially in the veins between healthy subjects and patients suffering from glaucoma were previously reported. In this pilot-study we investigated if localized vascular regulation is altered in glaucoma patients with altitudinal visual field defect asymmetry. Methods 15 eyes of 12 glaucoma patients with advanced altitudinal visual field defect asymmetry were included. The mean defect was calculated for each hemisphere separately (-20.99 ± 10.49 pro- found hemispheric visual field defect vs -7.36 ± 3.97 dB less profound hemisphere). After pupil dilation, RVA measurements of retinal arteries and veins were conducted using the standard protocol. The superior and inferior retinal vessel reactivity were measured consecutively in each eye. Results Significant differences were recorded in venous vessel constriction after flicker light stimulation and overall amplitude of the reaction (p \ 0.04 and p \ 0.02 respectively) in-between the hemispheres spheres. Vessel reaction was higher in the hemisphere corresponding to the more advanced visual field defect. Arterial diameters reacted similarly, failing to reach statistical significance. Conclusion Localized retinal vessel regulation is significantly altered in glaucoma patients with asymmetri altitudinal visual field defects. Veins supplying the hemisphere concordant to a less profound visual field defect show diminished diameter changes. Vascular dysregulation might be particularly important in early glaucoma stages prior to a significant visual field defect.},
  language  = {en}
}
@article{KuchlerGuenthnerRibeiroetal.2023,
  author    = {Kuchler, Timon and G{\"u}nthner, Roman and Ribeiro, Andrea and Hausinger, Renate and Streese, Lukas and W{\"o}hnl, Anna and Kesseler, Veronika and Negele, Johanna and Assali, Tarek and Carbajo-Lozoya, Javier and Lech, Maciej and Adorjan, Kristina and Stubbe, Hans Christian and Hanssen, Henner and Kotliar, Konstantin and Haller, Berhard and Heemann, Uwe and Schmaderer, Christoph},
  title     = {Persistent endothelial dysfunction in post-COVID-19 syndrome and its associations with symptom severity and chronic inflammation},
  volume    = {26},
  publisher = {Springer Nature},
  address   = {Dordrecht},
  doi       = {10.1007/s10456-023-09885-6},
  pages     = {547 -- 563},
  year      = {2023},
  abstract  = {Background Post-COVID-19 syndrome (PCS) is a lingering disease with ongoing symptoms such as fatigue and cognitive impairment resulting in a high impact on the daily life of patients. Understanding the pathophysiology of PCS is a public health priority, as it still poses a diagnostic and treatment challenge for physicians. Methods In this prospective observational cohort study, we analyzed the retinal microcirculation using Retinal Vessel Analysis (RVA) in a cohort of patients with PCS and compared it to an age- and gender-matched healthy cohort (n = 41, matched out of n = 204). Measurements and main results PCS patients exhibit persistent endothelial dysfunction (ED), as indicated by significantly lower venular flicker-induced dilation (vFID; 3.42\% ± 1.77\% vs. 4.64\% ± 2.59\%; p = 0.02), narrower central retinal artery equivalent (CRAE; 178.1 [167.5-190.2] vs. 189.1 [179.4-197.2], p = 0.01) and lower arteriolar-venular ratio (AVR; (0.84 [0.8-0.9] vs. 0.88 [0.8-0.9], p = 0.007). When combining AVR and vFID, predicted scores reached good ability to discriminate groups (area under the curve: 0.75). Higher PCS severity scores correlated with lower AVR (R = - 0.37 p = 0.017). The association of microvascular changes with PCS severity were amplified in PCS patients exhibiting higher levels of inflammatory parameters. Conclusion Our results demonstrate that prolonged endothelial dysfunction is a hallmark of PCS, and impairments of the microcirculation seem to explain ongoing symptoms in patients. As potential therapies for PCS emerge, RVA parameters may become relevant as clinical biomarkers for diagnosis and therapy management.},
  language  = {en}
}
@article{KotliarVolkovKoshitsetal.1997,
  author    = {Kotliar, Konstantin and Volkov, V. V. and Koshits, I. N. and Svetlova, O. V.},
  title     = {Biomekhanicheskie osobennosti vzaimodeĭstviia drenazhno i akkomodatsionnoĭ reguliatornykh sistem glaza v norme i pri kontuzionnom podvyvikhe khrustalika / Volkov, V. V. ; Kotliar, K. E. ; Koshits, I. n. ; Svetlova, O. V. ; Smol´nikov, B. A.},
  series = {Vestnik oftalmologii. 113 (1997), H. 3},
  journal   = {Vestnik oftalmologii. 113 (1997), H. 3},
  publisher = {-},
  isbn      = {0042-465X},
  pages     = {5 -- 7},
  year      = {1997},
  language  = {en}
}
@article{KotliarVilserNageletal.2004,
  author    = {Kotliar, Konstantin and Vilser, Walthatd and Nagel, Edgar and Lanzl, Ines M.},
  title     = {Retinal vessel reaction in response to chromatic flickering light / Kotliar, Konstantin E. ; Vilser, Walthard ; Nagel, Edgar ; Lanzl, Ines M.},
  series = {Graefe's Archive for Clinical and Experimental Ophthalmology. 242 (2004), H. 5},
  journal   = {Graefe's Archive for Clinical and Experimental Ophthalmology. 242 (2004), H. 5},
  publisher = {-},
  isbn      = {1435-702X},
  pages     = {377 -- 392},
  year      = {2004},
  language  = {en}
}
@article{KotliarVilserSchmidtTrucksaessetal.2009,
  author    = {Kotliar, Konstantin and Vilser, W. and Schmidt-Trucks{\"a}ss, A. and Halle, M. and Lanzl, I. M.},
  title     = {Zeitliche Schwingungen retinaler Gef{\"a}ßdurchmesser bei Gesunden unterschiedlichen Alters : Kreuz- und Autokorrelation f{\"u}r dynamische Gef{\"a}ßanalyse},
  series = {Der Ophthalmologe},
  volume    = {106},
  journal   = {Der Ophthalmologe},
  number    = {7},
  publisher = {-},
  isbn      = {1433-0423},
  pages     = {609 -- 618},
  year      = {2009},
  language  = {de}
}
@article{KotliarSvetlovaZinoviewaetal.2001,
  author    = {Kotliar, Konstantin and Svetlova, O. V. and Zinoviewa, N. V. and Krylova, I. S.},
  title     = {Elaboration of the conception of the biomechanical model of the aqueous intraocular outflow / Svetlova, O. V. ; Zinoviewa, N. V. ; Krylova, I. S. ; Koshitz, I. N. ; Smolnikov, B. A. ; Fedorova, E. M. ; Kotliar, K. E.},
  series = {Rossiiskii zhurnal biomekhaniki = Russian Journal of biomechanics. 5 (2001), H. 3},
  journal   = {Rossiiskii zhurnal biomekhaniki = Russian Journal of biomechanics. 5 (2001), H. 3},
  publisher = {-},
  isbn      = {1812-5123},
  pages     = {23 -- 27},
  year      = {2001},
  language  = {en}
}
@article{KotliarSvetlovaStegaevetal.2004,
  author    = {Kotliar, Konstantin and Svetlova, O. V. and Stegaev, V. A. and Parkhomov, S. D.},
  title     = {Biomechanical substantiation of relatively low efficiency of recurrent laser trabeculoplasty / Svetlova, O. V. ; Stagaev, V. A. ; Parkhomov, S. D. ; Kotliar, K. E. ; Makarov, F. N. ; Smolnikov, B. A. ; Koshitz, I. N.},
  series = {Glaukoma (2004)},
  journal   = {Glaukoma (2004)},
  publisher = {-},
  pages     = {29 -- 39},
  year      = {2004},
  language  = {en}
}
@article{KotliarSvetlovaSourjikovetal.2004,
  author    = {Kotliar, Konstantin and Svetlova, O. V. and Sourjikov, A. V. and Zaseeva, M. V.},
  title     = {Biomechanical peculiarities of aqueous humor production system and outflow regulation system / Svetlova, O. V. ; Sourjikov, A. V. ; Kotliar, K. E. ; Zaseeva, M. V. ; Shukhaev, S. V. ; Koshitz, I. N.},
  series = {Glaukoma (2004)},
  journal   = {Glaukoma (2004)},
  publisher = {-},
  pages     = {66 -- 76},
  year      = {2004},
  language  = {en}
}
@article{KotliarSvetlovaMakarovetal.2003,
  author    = {Kotliar, Konstantin and Svetlova, O. V. and Makarov, F. N. and Zaseeva, M. V.},
  title     = {Morfologicheskie i funktsional'nye osobennosti resnichnogo poiaska khrustalika kak kliuchevogo ispolnitel'nogo zvena v mekhanizme akkommodatsii glaza cheloveka = Morpho-functional characteristics of lens ciliary body as a key mechanism of accommodation in},
  series = {Morfologiia (Saint Petersburg, Russia). 123 (2003), H. 3},
  journal   = {Morfologiia (Saint Petersburg, Russia). 123 (2003), H. 3},
  publisher = {-},
  isbn      = {1026-3543},
  pages     = {7 -- 16},
  year      = {2003},
  language  = {en}
}
@article{KotliarOrtnerConradietal.2022,
  author    = {Kotliar, Konstantin and Ortner, Marion and Conradi, Anna and Hacker, Patricia and Hauser, Christine and G{\"u}nthner, Roman and Moser, Michaela and Muggenthaler, Claudia and Diehl-Schmid, Janine and Priller, Josef and Schmaderer, Christoph and Grimmer, Timo},
  title     = {Altered retinal cerebral vessel oscillation frequencies in Alzheimer's disease compatible with impaired amyloid clearance},
  series = {Neurobiology of Aging},
  volume    = {120},
  journal   = {Neurobiology of Aging},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0197-4580},
  doi       = {10.1016/j.neurobiolaging.2022.08.012},
  pages     = {117 -- 127},
  year      = {2022},
  abstract  = {Retinal vessels are similar to cerebral vessels in their structure and function. Moderately low oscillation frequencies of around 0.1 Hz have been reported as the driving force for paravascular drainage in gray matter in mice and are known as the frequencies of lymphatic vessels in humans. We aimed to elucidate whether retinal vessel oscillations are altered in Alzheimer's disease (AD) at the stage of dementia or mild cognitive impairment (MCI). Seventeen patients with mild-to-moderate dementia due to AD (ADD); 23 patients with MCI due to AD, and 18 cognitively healthy controls (HC) were examined using Dynamic Retinal Vessel Analyzer. Oscillatory temporal changes of retinal vessel diameters were evaluated using mathematical signal analysis. Especially at moderately low frequencies around 0.1 Hz, arterial oscillations in ADD and MCI significantly prevailed over HC oscillations and correlated with disease severity. The pronounced retinal arterial vasomotion at moderately low frequencies in the ADD and MCI groups would be compatible with the view of a compensatory upregulation of paravascular drainage in AD and strengthen the amyloid clearance hypothesis.},
  language  = {en}
}
@article{KotliarNagelVilseretal.2010,
  author    = {Kotliar, Konstantin and Nagel, Edgar and Vilser, Walthard and Seidova, Seid-Fatima and Lanzl, Ines},
  title     = {Microstructural alterations of retinal arterial blood column along the vessel axis in systemic hypertension},
  series = {Investigative Ophthalmology \& Visual Science, IOVS},
  volume    = {51},
  journal   = {Investigative Ophthalmology \& Visual Science, IOVS},
  number    = {4},
  publisher = {ARVO},
  address   = {Rockville, Md.},
  issn      = {0146-0404},
  doi       = {10.1167/iovs.09-3649},
  pages     = {2165 -- 2172},
  year      = {2010},
  abstract  = {Purpose: Image analysis by the retinal vessel analyzer (RVA) observes retinal vessels in their dynamic state online noninvasively along a chosen vessel segment. It has been found that high-frequency diameter changes in the retinal artery blood column along the vessel increase significantly in anamnestically healthy volunteers with increasing age and in patients with glaucoma during vascular dilation. This study was undertaken to investigate whether longitudinal sections of the retinal artery blood column are altered in systemic hypertension. Methods: Retinal arteries of 15 untreated patients with essential arterial hypertension (age, 50.9 ± 11.9 years) and of 15 age-matched anamnestically healthy volunteers were examined by RVA. After baseline assessment, a monochromatic luminance flicker (530-600 nm; 12.5 Hz; 20 s) was applied to evoke retinal vasodilation. Differences in amplitude and frequency of spatial artery blood column diameter change along segments (longitudinal arterial profiles) of 1 mm in length were measured and analyzed using Fourier transformation. Results: In the control group, average reduced power spectra (ARPS) of longitudinal arterial profiles did not differ when arteries changed from constriction to dilation. In the systemic hypertension group, ARPS during constriction, baseline, and restoration were identical and differed from ARPS during dilation (P < 0.05). Longitudinal arterial profiles in both groups showed significant dissimilitude at baseline and restoration (P < 0.05). Conclusions: The retinal artery blood column demonstrates microstructural alterations in systemic hypertension and is less irregular along the vessel axis during vessel dilation. These microstructural changes may be an indication of alterations in vessel wall rigidity, vascular endothelial function, and smooth muscle cells in this disease, leading to impaired perfusion and regulation.},
  language  = {en}
}