Purpose: To describe a case of transient band-like keratopathy after ocular exposure to fluocinonide cream and ketoconazole shampoo.
Design: Observational case report.
Results: A 40-year-old patient presented with acute pain, photophobia, lacrimation, and redness in 1 eye. The symptoms began while using fluocinonide cream and ketoconazole shampoo as treatment of seborrheic dermatitis of the scalp. Examination revealed white clumpy deposits in a horizontal band across the inferocentral corneal epithelium and conjunctival hyperemia. Corneal scrapings revealed no cells or organisms, and culture was negative. The lipophilic deposits dissolved during slide fixation and processing. With conservative treatment the deposits resolved in 3 days.
Conclusion: We present a case of transient band-like corneal deposit, a novel complication of fluocinonide and ketoconazole exposure.
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http://dx.doi.org/10.1097/01.ico.0000138854.33956.3d | DOI Listing |
ACS Nano
July 2023
Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States.
Several hybrid halide 2D-perovskite species emit light with an emergent and controversial broadband emission Stokes-shifted down from the narrow band emission. This paper uncovers the sub- and above-bandgap emission and absorption characteristics of PEAPbI prepared with gap states introduced during single crystal growth. Here, gap states led to coexistent intrinsic and heterostructured electronic frameworks that are selectively accessible with ultraviolet (UV) and infrared (IR) light, respectively, resulting in the phenomenon of photoluminescence (PL) switching from narrowband green to broadband red.
View Article and Find Full Text PDFACS Appl Energy Mater
May 2022
Institute of Physics, University of Amsterdam, 1098 XH Amsterdam, The Netherlands.
Assembled perovskite nanocrystals (NCs), known as supercrystals (SCs), can have many exotic optical and electronic properties different from the individual NCs due to energy transfer and electronic coupling in the dense superstructures. We investigate the optical properties and ultrafast carrier dynamics of highly ordered SCs and the dispersed NCs by absorption, photoluminescence (PL), and femtosecond transient absorption (TA) spectroscopy to determine the influence of the assembly on the excitonic properties. Next to a red shift of absorption and PL peak with respect to the individual NCs, we identify signatures of the collective band-like states in the SCs.
View Article and Find Full Text PDFAdv Sci (Weinh)
June 2022
Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.
While there have been numerous reports of long-range polariton transport at room-temperature in organic cavities, the spatiotemporal evolution of the propagation is scarcely reported, particularly in the initial coherent sub-ps regime, where photon and exciton wavefunctions are inextricably mixed. Hence the detailed process of coherent organic exciton-polariton transport and, in particular, the role of dark states has remained poorly understood. Here, femtosecond transient absorption microscopy is used to directly image coherent polariton motion in microcavities of varying quality factor.
View Article and Find Full Text PDFNeurol Sci
August 2022
Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
Nat Commun
July 2021
MOE Key Laboratory of Organic OptoElectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, China.
The nonlocal electron-phonon couplings in organic semiconductors responsible for the fluctuation of intermolecular transfer integrals has been the center of interest recently. Several irreconcilable scenarios coexist for the description of the nonlocal electron-phonon coupling, such as phonon-assisted transport, transient localization, and band-like transport. Through a nearly exact numerical study for the carrier mobility of the Holstein-Peierls model using the matrix product states approach, we locate the phonon-assisted transport, transient localization and band-like regimes as a function of the transfer integral (V) and the nonlocal electron-phonon couplings (ΔV), and their distinct transport behaviors are analyzed by carrier mobility, mean free path, optical conductivity and one-particle spectral function.
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