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Détail de l'auteur
Auteur Wolfgang Sickenberger
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la rechercheLipid Analysis on Block Copolymer–containing Packaging Solution and Lens Care Regimens: A Randomized Clinical Trial / Amanda Shows in OVS : Optometry & Vision Science, vol. 97, 08 (Aout 2020)
[article]
in OVS : Optometry & Vision Science > vol. 97, 08 (Aout 2020)
Titre : Lipid Analysis on Block Copolymer–containing Packaging Solution and Lens Care Regimens: A Randomized Clinical Trial Type de document : article de périodique Auteurs : Amanda Shows ; Wolfgang Sickenberger ; Jennifer S. Fogt ; Marc Schulze ; Christopher Lievens ; Loretta B. Szczotka-Flynn ; Stefan Schwarz ; Jessie M. Lemp-Hull Année de publication : 2020 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Cholestérol
[Thésaurus Mesh]Études prospectives
[Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Solutions pour lentilles cornéennesMots-clés : Lentille silicone-hydrogel lentilles Lotrafilcon B Résumé : SIGNIFICANCE: Lotrafilcon B lenses packaged in and cared for with block copolymer–containing (polyoxyethylenepolyoxybutylene; EOBO) lens care solutions resulted in lower cholesterol extraction than each of the habitual silicone
hydrogel lens/multipurpose solution (MPS) regimens tested.
PURPOSE: This study aimed to compare the extracted cholesterol of lotrafilcon B lenses packaged in and cared for
with EOBO-containing lens care solutions with the extracted cholesterol of habitual silicone hydrogel lenses cared
for with MPS not containing EOBO.
METHODS: In this prospective, randomized, observer-masked parallel study, habitual wearers of senofilcon C,
senofilcon A, comfilcon A, and samfilcon A contact lenses using a non-EOBO MPS were randomized 1:1 to
lotrafilcon B lenses packaged in and cared for with EOBO-containing solutions or to their habitual lenses and
MPS. Subjects randomized to lotrafilcon B were further randomized to one of two EOBO-containing lens care solutions, OPTI-FREE PUREMOIST or CLEAR CARE PLUS with HydraGlyde (Alcon Laboratories, Inc., Fort Worth, TX).
A subset of right eye lenses was collected after wear, and total cholesterol was extracted and measured using a fluorometric enzymatic assay.
RESULTS: Of 143 lenses analyzed, 95 were from subjects randomized to their habitual lenses/MPS and 48 to
lotrafilcon B + EOBO lenses plus CLEAR CARE PLUS with HydraGlyde or OPTI-FREE PUREMOIST. The mean
amounts of cholesterol extracted from lotrafilcon B + EOBO lenses cared for with CLEAR CARE PLUS with
HydraGlyde (0.28 ± 0.18 μg/lens) and OPTI-FREE PUREMOIST (0.28 ± 0.48 μg/lens) were significantly lower
than those extracted from senofilcon C (4.18 ± 3.25 μg/lens), senofilcon A (2.19 ± 2.69 μg/lens), comfilcon A
(2.17 ± 1.47 μg/lens), and samfilcon A (2.07 ± 1.48 μg/lens) lenses used with MPS (P < .0001 each).
CONCLUSIONS: Cholesterol sorption was significantly lower in wearers of lotrafilcon B lenses cared for with
polyoxyethylene-polyoxybutylene–containing lens care solutions than in users of habitual silicone hydrogel lenses
cared for with non–polyoxyethylene-polyoxybutylene MPS.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Solution-related in Vitro Dewetting Behavior of Various Daily Disposable Contact Lenses / Sebastian Marx in OVS : Optometry & Vision Science, vol. 99, 10 (octobre 2022)
[article]
in OVS : Optometry & Vision Science > vol. 99, 10 (octobre 2022)
Titre : Solution-related in Vitro Dewetting Behavior of Various Daily Disposable Contact Lenses Type de document : article de périodique Auteurs : Sebastian Marx ; Stanislav Baluschev ; Wolfgang Sickenberger Année de publication : 2022 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Lentilles de contact Mots-clés : processus de mouillage des lentilles de contact fabrication Résumé : SIGNIFICANCE: The dewetting process of contact lenses (CLs) is a result of material and solution properties as well as environmental factors. This article describes an investigational approach to observe and describe dewetting characteristics of different CL material and solution combinations. PURPOSE: This study aimed to determine the in vitro dewetting characteristics of various daily disposable CLs that were assessed using a noninvasive keratograph dewetting procedure (noninvasive keratograph dry-up time). In vitro dewetting data of the same CL materials soaked in saline solution and artificial tear solution (ATS) were measured to determine additional dewetting characteristics. METHODS: Noninvasive keratograph dry-up time was measured for six different soft CL materials and three different test conditions, in their specific blister solution, after exposure to saline and an ATS. Twenty CLs of each solution/material combination were assessed after an 8-hour soaking, during a 180-second dewetting observation, and the results were expressed by area under the curve values. RESULTS: Fastest dewetting occurred for all materials when measured out of saline, indicated by the highest averaged area under the curve value of 9243.3 ± 38.3 over all lens materials. Slower dewetting was detected for all materials when measured out of their specific blister solution (7755.9 ± 37.1) and out of ATS (7988.8 ± 40.0). Intragroup results were statistically significantly different for all solutions showing the smallest differences within the ATS group (P < .001, Kruskal-Wallis test). CONCLUSIONS: A pure saline thin film is not an ideal representation of a complex tear film layer of a healthy human because it lacks any evaporative protection by a lipid layer. The use of an ATS, which more likely mimics the natural tear film, allowed in this experimental in vitro project to decrease the gap to the in vivo field. In vitro dewetting information in connection with the blister solution allows only a theoretical conclusion about the initial lens wear after lens insertion. Note de contenu :
Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Ultraviolet and Visible Transmittance of Soft Contact Lenses with and without Ultraviolet Blockers / Andrea Kapfelsberger in OVS : Optometry & Vision Science, vol. 98, 11 (Novembre 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 11 (Novembre 2021)
Titre : Ultraviolet and Visible Transmittance of Soft Contact Lenses with and without Ultraviolet Blockers Type de document : article de périodique Auteurs : Andrea Kapfelsberger ; Julia Eckstein ; Anke von Ahrentschildt ; Jürgen Dipl-Ing Bischoff ; Sebastian Marx ; Wolfgang Sickenberger Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Rayons ultravioletsMots-clés : filtre Résumé : SIGNIFICANCE
Ultraviolet (UV) and visible light transmittance of soft contact lenses (SCLs) was measured. A significant difference in UV transmittance has been found between SCLs with a positive and negative back vertex power (BVP). It can be shown that thicker SCLs absorb more UV radiation.
PURPOSE
This study aimed to determine UV and visible light transmittance of different SCLs with and without UV protection filters.
METHODS
Twenty-one lens brands were investigated in the BVP range of −12.00 to +6.00 D. Three SCLs were measured per BVP 25 times. Three hundred thirty-nine SCLs with UV filter (stenfilcon A, somofilcon A, narafilcon A, senofilcon A, senofilcon C, etafilcon A, nesofilcon A) and 489 SCLs without UV filter (delefilcon A, lotrafilcon A, lotrafilcon B, comfilcon A, balafilcon A, samfilcon A, asmofilcon A, nelfilcon A, omafilcon A, hilafilcon B, ocufilcon D, hioxifilcon A, omafilcon B) have been examined. The measurement setup was created according to ISO 18369-3.
RESULTS
All UV-absorbing labeled test SCLs meet UV protection class 2. senofilcon A, senofilcon C, and narafilcon A meet the higher UV protection class 1 level. A statistically significant difference in UV transmittance (280 to 380 nm) has been found between SCLs with a positive BVP (+1.00 to +6.00 D) and SCLs with a negative BVP (−1.00 to −12.00 D), both without (P = .04) and with UV filters (P = .02).
CONCLUSIONS
With the ISO-conforming, diopter-independent measurement setup, the UV-absorbing test contact lenses that meet the current international standards, regardless of their BVP, were identified. Lenses with increased center thickness absorb more UV radiation. Further studies may use a modified measurement setup with a larger aperture than 10 mm. It would also be worthwhile to examine the UV absorption of the contact lens over the complete corneal area and limbal area because UV radiation may damage inner ocular tissues like the crystalline lens as well as limbal stem cells.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Visual performance of Ortho-K and Lasik-patients :with regard to legal requirements of driver lisense in comparison to a normal population in Germany / Wolfgang Sickenberger in Global contact, 93 (Janvier-avril 2023)
[article]
in Global contact > 93 (Janvier-avril 2023) . - p. 28-31
Titre : Visual performance of Ortho-K and Lasik-patients :with regard to legal requirements of driver lisense in comparison to a normal population in Germany Type de document : article de périodique Auteurs : Wolfgang Sickenberger ; Sebastian Marx Année de publication : 2023 Article en page(s) : p. 28-31 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Acuité visuelle
[Thésaurus Mesh]Allemagne
[Thésaurus Mesh]Conduite automobile
[Thésaurus Mesh]Législation
[Thésaurus Mesh]Lentilles de contact
[Thésaurus HELB]:Optique:orthokératologieEn ligne : https://www.global-cl.com/magazine/ Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire