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Détail de l'auteur
Auteur Ajay Kumar Vijay
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la rechercheEffect of Hygiene Procedures on Lens Case Contamination with Povidone-Iodine or Multipurpose Disinfecting Solutions / Masahiro Nakagawa in OVS : Optometry & Vision Science, vol. 98, 06 (Juin 2012)
[article]
in OVS : Optometry & Vision Science > vol. 98, 06 (Juin 2012)
Titre : Effect of Hygiene Procedures on Lens Case Contamination with Povidone-Iodine or Multipurpose Disinfecting Solutions Type de document : article de périodique Auteurs : Masahiro Nakagawa ; Ritsue Nakagawa ; Mark D.P. Willcox ; Ajay Kumar Vijay Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Désinfection
[Thésaurus Mesh]Hygiène
[Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Solutions pour lentilles cornéennesRésumé : SIGNIFICANCE: A multipurpose disinfecting solution (MPDS), which contains povidone-iodine (PI) as a disinfectant, has high disinfecting efficacy not only on planktonic bacterium but also on the case biofilms. The addition of case hygiene practice removed more bacteria from cases than MPDS alone. PURPOSE: This study compared the ability of two MPDSs, one containing PI and another containing polyaminopropyl biguanide and polyquaternium, to reduce bacterial numbers in solution or adhered to the cases following case hygiene procedures. METHODS: Bacterial strains (Delftia acidovorans, Pseudomonas aeruginosa, Stenotrophomonas maltophilia, Serratia marcescens, Staphylococcus aureus, and Staphylococcus epidermidis) were exposed to the MPDSs for the recommended disinfection times, and the viable number evaluated according to ISO 14729. Cases were inoculated with bacterial strains and incubated for 24 hours to allow for biofilm formation. Cases were disinfected with both disinfecting solutions for 4 hours and rinsed, followed by recapping or air-drying, or tissue-wiping and air-drying for 18 hours. The number of survivors was counted using standard culture techniques. RESULTS: Both products exceeded the recommended 3-log reduction against planktonic bacteria. Regarding biofilm, after rinsing and recapping wet, the numbers of D. acidovorans (mean difference [95% confidence interval] log10 colony-forming units per case, −2.9 [0.8 to −4.6], P < .01), P. aeruginosa (−2.0 [0.5 to −3.1], P < .01), S. marcescens (−1.7 [0.8 to −3.5], P < .05), and S. epidermidis (−2.1 [0.6 to −3.5], P < .05) in PI cases were significantly lower than in the dual-disinfectant MPDS storage cases. After air-drying, the PI storage cases had significantly lower numbers of S. maltophilia (−2.6 [0.6 to −4.0], P < .01), D. acidovorans (−1.6 [0.7 to −3.3], P < .05), and S. aureus (−1.6 [0.7 to −3.1], P < .05). The addition of tissue-wiping reduced the bacterial numbers in the MPDS storage cases to levels in the PI storage cases. CONCLUSIONS: Contact lens users should be recommended to tissue-wipe and air-dry their lens storage cases after disinfection with regular MPDS. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Factors Affecting Microbial Contamination on the Back Surface of Worn Soft Contact Lenses / Jacqueline Tan in OVS : Optometry & Vision Science, vol. 98, 05 (Mai 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 05 (Mai 2021)
Titre : Factors Affecting Microbial Contamination on the Back Surface of Worn Soft Contact Lenses Type de document : article de périodique Auteurs : Jacqueline Tan ; Jaya Sowjanya Siddireddy ; Katherine Wong ; Qing Shen ; Ajay Kumar Vijay ; Fiona Stapleton Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Bactéries
[Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Lutte contre l'infection
[Thésaurus HELB]:Optique:port de lentilles de contactMots-clés : emballage Smart Touch Technology Résumé : SIGNIFICANCE: The results of this study demonstrate that Smart Touch Technology packaging, which is designed to reduce and simplify contact lens handling before insertion, is effective in reducing the frequency of bacterial contamination of the back surface of contact lenses after short-term wear. PURPOSE: The purpose of this study was to investigate the effect of lens packaging type, chelating agent, and finger contamination on microbial contamination on the back surface of worn soft contact lenses. METHODS: Twenty-five subjects completed each contralateral lens wear comparison in this randomized study: Smart Touch Technology versus conventional blister packaging for (1) silicone hydrogel lenses with ethylenediaminetetraacetic acid (EDTA) and (2) hydrogel lenses without EDTA in the packaging, and (3) silicone hydrogel lenses without EDTA versus hydrogel lenses with EDTA both in Smart Touch Technology packaging. Participants washed hands, underwent finger swabs, and inserted the lenses. After 45 minutes, lenses were removed aseptically and the posterior lens surfaces cultured. RESULTS: Thirty-eight subjects (average age, 30.9 ± 12.5 years) participated in this study. Overall, the level of back surface contamination was low for both lens materials, ranging from 0 to 43 colony-forming unit (CFU)/lens for the silicone hydrogel and 0 to 17 CFU/lens for the hydrogel lenses. The proportion of lenses with zero back surface contamination ranged from 16 to 64% for silicone hydrogel lenses and 28 to 64% for hydrogel lenses. Contact lenses from conventional packaging containing EDTA had 3.38 times increased risk (95% confidence interval [CI], 1.02 to 11.11; P = .05) of contamination being present compared with lenses from Smart Touch packaging with EDTA. Contact lenses from conventional packaging without EDTA had 3.4 times increased risk (95% CI, 1.02 to 11.36; P = .05) of contamination being present compared with Smart Touch packaging without EDTA, and silicone hydrogel lenses had a 6.28 times increased risk (95% CI, 1.65 to 23.81; P = .007) of contamination being present compared with hydrogels. The median (interquartile range) number of bacteria isolated from fingers used to perform lens insertion after handwashing but before lens insertion was not significantly different between the silicone hydrogel and hydrogel lenses (63.7 [204.2] vs. 59 [84.5], P = .09). Finger contamination was not significantly associated with lens contamination in the presence or absence of EDTA. CONCLUSIONS: Smart Touch Technology packaging was effective in reducing the proportion of contaminated lenses. Although silicone hydrogel lenses were more likely to be contaminated, the presence of EDTA ameliorated this effect. Finger contamination was not associated with lens contamination. Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire The effect of microblepharon exfoliation on clinical correlates of contact lens discomfort / Jaya Sowjanya Siddireddy in OVS : Optometry & Vision Science, vol. 96, 03 (Mars 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 03 (Mars 2019) . - p. 187-199
Titre : The effect of microblepharon exfoliation on clinical correlates of contact lens discomfort Type de document : article de périodique Auteurs : Jaya Sowjanya Siddireddy, Auteur ; Ajay Kumar Vijay, Auteur Année de publication : 2019 Article en page(s) : p. 187-199 Langues : Anglais (eng) Langues originales : Anglais (eng) Descripteurs (mots clés) : [Thésaurus Mesh]:L:Lentilles de contact:Lentilles de contact / effets indésirables
[Thésaurus Mesh]:M:Maladies de la paupière:Maladies de la paupière / thérapie
[Thésaurus Mesh]:S:Syndromes de l'oeil sec:Syndromes de l'oeil sec / thérapie
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Lentilles de contact
[Thésaurus Mesh]Maladies de la paupière
[Thésaurus Mesh]Syndromes de l'oeil secRésumé : SIGNIFICANCE: Microblepharon exfoliation improved eyelid signs and tear film characteristics after a single inoffice treatment in symptomatic contact lens wearers.
PURPOSE: The purpose of this study was to assess the effect of two eyelid hygiene treatments—microblepharon
exfoliation and a hypoallergenic foam cleanser (LidHygenix)—on clinical signs of the eyelids, meibomian glands,
and tear film in contact lens discomfort.
METHODS: A randomized, interventional, unmasked, crossover trial was conducted on 30 experienced daily-wear
soft contact lens wearers. Assessment of clinical signs of the eyelid margin, meibomian gland morphology and
secretion, and tear film biophysical properties was performed (baseline 1), and participants were randomly
assigned to receive one of the two treatments (microblepharon exfoliation or foam cleansing using LidHygenix)
as a single in-office procedure. Symptoms were evaluated using the Contact Lens Dry Eye Questionnaire-8 immediately after treatment, and assessment of all the study variables was repeated at the follow-up visit 7 to
10 days after treatment. After 28 to 30 days of washout, participants returned for reassessment of the study variables (baseline 2) and were crossed over to receive the alternate treatment. Follow-up was repeated 7 to 10 days
after the second treatment.
RESULTS: Seven to 10 days after treatment with microblepharon exfoliation, symptomatic wearers showed significant improvement in anterior blepharitis (mean difference, 0.60; P = .04), lid wiper staining (0.50; P = .06), and
lid-parallel conjunctival folds (0.68, P = .02) along with orifice capping (median difference, 0.65; P < .001), foam
(0.90; P < .001), secretion volume (0.69; P < .001), quality (0.74; P < .001), and expressibility (0.49; P = .002),
which were also clinically significant changes. However, in tear properties, significant improvements were observed in tear volume (LidHygenix, −1.25 mm; microblepharon exfoliation, −1.62 mm), break-up time (−0.14 seconds; −0.14 seconds), tear evaporation rate without contact lenses (21.52 g m−2 h; 45.43 g m−2 h), and lipid layer
thickness (−20.61 nm; −25.13 nm) after both treatments but in symptomatic lens wearers only (P < .05).
CONCLUSIONS: Microblepharon exfoliation improved eyelid signs and tear film characteristics in symptomatic
contact lens wearers after a single in-office treatmentPermalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
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