scholarly journals To study the safety of topical anesthetic eye drops among different patients for month after opening

2019 ◽  
Vol 35 (3) ◽  
Author(s):  
Dr. Mehr-un-Nisa Abid ◽  
Dr. Irfan Qayyum Malik ◽  
Dr. Irfan Qayyum Malik ◽  
Dr. Muhammad Wasif Irshad
Keyword(s):  
Benzalkonium Chloride ◽  
Culture Medium ◽  
Fungal Growth ◽  
Eye Drops ◽  
Main Ingredient ◽  
Topical Anesthetic ◽  
Department Of Ophthalmology ◽  
Medium Risk ◽  
Organism Growth ◽  
Growth Of Fungi

AbstractPurpose: To find out if we can use topical anesthetic eye drops among different patients for one month after opening the bottle without any risk of causing corneal or conjunctival infections and endophthalmitis.Study Design: Experimental studyPlace and duration of study: Department of Ophthalmology DHQ Teaching Hospital, Gujranwala from 22nd May 2018 to 22nd June 2018.Materials and Methods: This was an experimental study in which topical anesthetic eye drops containing proparacaine hydrochloride 0.5% were tested daily to see if any bacterial/fungal growth occurs in the bottle containing eye drops or not. Same bottle was used in patients presenting in outdoor and indoor departments. Samples taken from the bottle contents were cultured on different media to see growth of fungi or bacteria if any.Results: After 1 month of daily culturing on agar plates, no micro-organism growth was seen.Conclusion: Topical anesthetic eye drops containing proparacaine hydrochloride as the main ingredient and benzalkonium chloride as the preservative (Alcaine®) can be used safely for 1 month after opening in different patients without any risk of causing infectious keratitis, conjunctivitis or endophthalmitis.Keywords: Topical anesthetic, Culture medium, Risk factor, Endophthalmitis

scholarly journals To Study the Safety of Multi-dose Topical Anaesthetic Eye Drops One Month after Opening

2019 ◽  
Vol 35 (3) ◽  
Author(s):  
Mehr-un-Nisa Irfan Qayyum Malik Muhammad Wasif Irshad
Keyword(s):  
Fungal Growth ◽  
Eye Drops ◽  
Topical Anaesthetic ◽  
Dry Eyes ◽  
Study Results ◽  
Department Of Ophthalmology ◽  
Quasi Experimental ◽  
Organism Growth ◽  
Group A ◽  
Group B

Purpose: To determine the risk of ocular infections due to topical multi-dose anaesthetic eye drops in patients one month after opening the bottle. Study Design: Quasi experimental study. Place and duration of study: Department of Ophthalmology DHQ Teaching Hospital, Gujranwala from 22nd May 2018 to 22nd June 2018. Materials and Methods: In this study topical anaesthetic eye drops containing proparacaine hydrochloride 0.5% as main ingredient and benzalkonium choride as preservative (Alcaine�) were tested daily to see if any bacterial/fungal growth occurs in the bottle containing eye drops or not. Same bottle was used in patients presenting in outdoor and indoor departments. Samples taken from the bottle contents were cultured on different media to see growth of fungi or bacteria. Patients who already had keratitis, conjunctivitis, corneal opacities, thin corneas and having dry eyes which were prone to get infected were excluded from this study. Results: There were 60 patients included in our study and they were divided in two groups. Group A included those who presented in the outdoor department and group B comprised of those admitted for various operative procedures. There were 30 patients in each group. All patients were adults (18-60 years). After 1 month of daily culturing on agar plates, no micro-organism growth was seen in both groups. Conclusion: Topical anaesthetic eye drops can be used safely for 1 month in different patients after opening the bottle without any risk of causing infectious keratitis, conjunctivitis or endophthalmitis. Keywords: Proparacaine, Culture medium, Endophthalmitis.

scholarly journals Comparison of treatment efficacy between 100% platelet-rich plasma and 100% serum eye drops in moderate-to-severe dry eye disease: a randomised controlled trial protocol

BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e048479
Author(s):  
Passara Jongkhajornpong ◽  
Pawin Numthavaj ◽  
Thunyarat Anothaisintawee ◽  
Kaevalin Lekhanont ◽  
Gareth McKay ◽  
...  
Keyword(s):  
Dry Eye ◽  
Ocular Surface ◽  
Platelet Rich Plasma ◽  
Controlled Trial ◽  
Dry Eye Disease ◽  
Autologous Serum ◽  
Eye Disease ◽  
Eye Drops ◽  
Department Of Ophthalmology ◽  
Autologous Platelet

IntroductionDry eye disease (DED) is a common eye problem. Although the disease is not fatal, it substantially reduces quality of life and creates a high economic burden, especially in patients with moderate-to-severe DED. Several biological tear substitutes (eg, autologous serum (AS), autologous platelet-rich plasma (APRP) and autologous platelet lysate) could effectively improve dry eyes. However, evidence on their comparative efficacy is controversial. This study aims to compare the efficacy of 100% APRP with 100% AS eye drops in patients with moderate-to-severe DED.Methods and analysisThe study is a single-centre, double-blinded randomised, parallel, non-inferiority trial. One hundred and thirty patients with moderate-to-severe DED, aged 18–70 years will be recruited from outpatient clinic, Department of Ophthalmology, Ramathibodi Hospital, Bangkok from February 2021 to January 2023. Patients will be randomised to receive either 100% APRP or 100% AS eye drops (1:1 ratio) for 4 weeks. The primary outcomes are ocular surface disease index (OSDI) and ocular surface staining (OSS) evaluated using the Oxford scale. Secondary outcomes are fluorescein break-up time, Schirmer’s I test, meibomian gland parameters and adverse events. Other measured outcomes include best-corrected visual acuity, intraocular pressure and compliance.Ethics and disseminationThe study protocol and any supplements used in conducting this trial have been approved by the Ethics Committee of Faculty of Medicine, Ramathibodi Hospital, Mahidol University (MURA2020/1930). Informed consent will be obtained from all patients before study entry. Results will be presented in peer-reviewed journals and international conferences.Trial registration numberNCT04683796.

Chemical control of fungal growth and ochratoxin A production by Aspergillus isolated from Moroccan grapes

2018 ◽  
Vol 7 (2) ◽  
pp. 84-91
Author(s):  
Adil Laaziz ◽  
Souad Qjidaa ◽  
Yousra El Hammoudi ◽  
Abdelouahed Hajjaji ◽  
Amina Bouseta
Keyword(s):  
Ochratoxin A ◽  
Radial Growth ◽  
Culture Medium ◽  
Fungal Growth ◽  
Sublethal Concentration ◽  
Agar Culture ◽  
Total Inhibition ◽  
Yeast Autolysate ◽  
Germination And Growth ◽  
Czapek Yeast Autolysate Agar

The aim of this study was to evaluate the effect of three fungicides azoxystrobin (Ortiva), hexaconazole (Hexa) and pyrimethanil (Pyrus) for their ability to inhibit the radial growth and ochratoxin A (OTA) production by five ochratoxigenic strains of Aspergillus carbonarius and A. niger previously iso-lated from Moroccan grapes. Our results showed that, the addition of the fungicides to the Czapek Yeast Autolysate agar culture medium reduced the growth of the ochratoxigenic strains. Pyrimethanil caused total inhibition of spore germination and growth of the five strains, for all dose tested. Where-as hexaconazole totally inhibited the growth of 4 strains and gave growth for the MUCL 49227 strain (2.67 mm/day) at sublethal concentration. The reduction in radial growth was less marked for azoxystrobin, with growth rate varying between 0 and 6.37 mm/day depending on the strain and the azoxystrobin concentration. Analysis of variance showed that the effect of single factors (fungicides, concentration and strain) and their interactions on growth and OTA production were highly significant (P=0.000).These findings suggest that the use of tested fungicides have to potential for reduction in production of OTA.

scholarly journals Benzalkonium chloride corneal toxicity post-cataract surgery

2020 ◽  
Vol 17 (1) ◽  
pp. 56-60
Author(s):  
Keith Ong ◽  
Leonard Ong
Keyword(s):  
Cataract Surgery ◽  
Benzalkonium Chloride ◽  
Corneal Stroma ◽  
Eye Drops ◽  
Descemet's Membrane ◽  
Corneal Toxicity ◽  
Descemet’S Membrane ◽  
Free Steroid

Two patients with presumed benzalkonium chloride (BAK) corneal toxicity after routine cataract surgery are presented. Patient 1 had corneal stroma and Descemet’s membrane folds. Patient 2 had moderate superficial punctate epithelial erosions (SPEE). They were on Chlorsig, Maxidex, and Acular eye drops tds postoperatively. The corneas of these two patients improved when BAK was removed or minimized from the postoperative eye drop regimen. Two vials of 1 ml dexamethasone 4mg/ml for injection were added to Chlorsig 10 ml bottle to substitute for Maxidex eye drops. BAK toxicity should be suspected when the cornea is not as clear as expected postoperatively. A practical way to eliminate BAK from postoperative eye drops is described, and would be useful until pharmaceuticals mass-produce BAK-free steroid eye drops economically.

scholarly journals Frequency of efficacy of topical cyclosporine 0.05% eye drops in the management of dry eyes

2021 ◽  
Vol 15 (6) ◽  
pp. 1384-1386
Author(s):  
M. Khalid ◽  
M. Rizwan ◽  
S. Khurshid
Keyword(s):  
Dry Eye ◽  
Dry Eye Disease ◽  
Eye Disease ◽  
Eye Drops ◽  
Care Hospital ◽  
Improvement Rate ◽  
Female Patients ◽  
Department Of Ophthalmology ◽  
Male Patients ◽  
Efficacy Of Treatment

Aim: To determine the efficacy of cyclosporine 0.05% for the management of patients of dry-eye disease presenting at tertiary care hospital. Methods: This cross sectional study was conducted at Department of Ophthalmology, Sahiwal Medical College, Sahiwal from March 2020 to September 2020 over the period of 6 months.Total 310 patients of dry eye were included in this study after scrutinized by inclusion criteria. All the selected patients were managed with cyclosporine 0.05% and efficacy of the drug was assessed. Results: Total 310 patients of dry eye disease were recruited. Mean age was 47.15 ± 3.61 years and mean duration of dry eye disease was 11.10 ± 1.75 months. Out of 310 patients, treatment was found effective in 225 (73%) patients. Efficacy of treatment was noted in 172(96.63%) male patients and in 53(40.15%) female patients. Significantly higher rate of efficacy was noted in male patients as compared to female patients with p value 0.000. Conclusion: Results of present study showed higher improvement rate of dry eye symptoms in cases of dry eye managed with cyclosporine 0.05%. Male patients were more victim of dry eye as compared to female patients and statistically significant association of efficacy with gender was observed. No association of efficacy of treatment with age group and duration of disease was observed. Keywords: Dry eye, cyclosporine, inflammation, immunomodulator agents.

scholarly journals Selection of filamentous fungi that are resistant to the herbicides atrazine, glyphosate and pendimethalin

2021 ◽  
Vol 43 ◽  
pp. e51656
Author(s):  
Nara Priscila Barbosa Bravim ◽  
Anatércia Ferreira Alves ◽  
José Fábio França Orlanda ◽  
Patricia Barbosa Rodrigues Silva
Keyword(s):  
Filamentous Fungi ◽  
Mycelial Growth ◽  
Culture Medium ◽  
Agricultural Soils ◽  
Culture Media ◽  
Fusarium Verticillioides ◽  
Fungal Growth ◽  
Relative Growth ◽  
Maximum Inhibition ◽  
Selection Of

The objective of the present study was to isolate fungi from agricultural soils and evaluate fungal growth in culture medium contaminated with atrazine, glyphosate and pendimethalin. Filamentous fungi were isolated from agricultural soils and cultured in a modified culture medium containing 0, 10, 20, 50, and 100 μg mL-1 atrazine, glyphosate and pendimethalin for 14 days at 28°C. The fungi that presented optimal and satisfactory growth were plated in Sabouraud culture medium with 4% dextrose and containing the herbicides at concentrations of 0, 10, 20, 50, and 100 μg mL-1 for seven days at 28°C. The mean mycelial growth values were submitted to analysis of variance and the Tukey test (p < 0.05%) for comparison and relative growth determination, and maximum inhibition rates were calculated. The isolated fungi Aspergillus fumigatus, Fusarium verticillioides and Penicillium citrinum were shown to be resistant to atrazine, glyphosate and pendimethalin. F. verticillioides showed higher mean mycelial growth in the culture media contaminated with atrazine and glyphosate than the other two fungi. In the culture medium contaminated with pendimethalin, F. verticillioides, and A. fumigatus presented the highest mean mycelial growth values.

scholarly journals A review of fungal influenced corrosion of metals

2021 ◽  
Vol 62 (4) ◽  
pp. 333-339
Author(s):  
Imo Okorie ◽  
Romanus Nwokorie
Keyword(s):  
Growth Pattern ◽  
Metal Surfaces ◽  
Structural Integrity ◽  
Great Influence ◽  
Fungal Growth ◽  
Corrosive Media ◽  
Electrochemical Processes ◽  
Single Mechanism ◽  
Growth Of Fungi

The growth of fungi on the surface of metals has great influence on their structural integrity and failure. Their growth on metal surfaces is determined by their secreted metabolites which enable them to adapt to new environmental and nourishment conditions. Although information on the capacity of fungi to adapt to metal surfaces is scarce, most fungi growing on metal surfaces alter the composition of the metals involving it in the process of functional growth and metabolism. Changes in the composition and colour of the metals are some of the evidences confirming that fungus has penetrated the metal surfaces and use it to satisfy its nutritional need with resultant corrosion. In this work we tried to explain different mechanisms of fungal influenced corrosion from different perspectives ranging from the role of biofilms, corrosive media generation by fungal metabolism processes to electrochemical processes generated by fungal growth on metal surfaces. Finally, no single mechanism can conclusively explain all forms of fungal influenced corrosion because every mechanism is unique and applies to individual fungus, its metabolic biproducts or the growth pattern.

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