scholarly journals Eye Drops, Emulsion in Single-dose Container

2020 ◽  
Author(s):  
Keyword(s):  
Single Dose ◽  
Eye Drops

scholarly journals Bio-Distribution and Pharmacokinetics of Topically Administered γ-Cyclodextrin Based Eye Drops in Rabbits

2021 ◽  
Vol 14 (5) ◽  
pp. 480
Author(s):  
Martin Kallab ◽  
Kornelia Schuetzenberger ◽  
Nikolaus Hommer ◽  
Bhavapriya Jasmin Schäfer ◽  
Doreen Schmidl ◽  
...  
Keyword(s):  
Single Dose ◽  
Drug Concentration ◽  
Vitreous Humor ◽  
Controlled Study ◽  
Eye Drops ◽  
Corneal Tissue ◽  
Single Administration ◽  
Local Tolerability ◽  
Dose Administration ◽  
Retinal Tissue

The purpose of this study was to evaluate the ocular pharmacokinetics, bio-distribution and local tolerability of γ-cyclodextrin (γCD) based irbesartan 1.5% eye drops and candesartan 0.15% eye drops after single and multiple topical administration in rabbit eyes. In this randomized, controlled study, a total number of 59 New Zealand White albino rabbits were consecutively assigned to two study groups. Group 1 (n = 31) received irbesartan 1.5% and group 2 (n = 28) candesartan 0.15% eye drops. In both groups, single dose and multiple administration pharmacokinetic studies were performed. Rabbits were euthanized at five predefined time points after single-dose administration, whereas multiple-dose animals were dosed for 5 days twice-daily and then euthanized 1 h after the last dose administration. Drug concentration was measured by using liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the retinal tissue, vitreous humor, aqueous humor, corneal tissue and in venous blood samples. Pharmacokinetic parameters including maximal drug concentration (Cmax), time of maximal drug concentration (Tmax), half-life and AUC were calculated. To assess local tolerability, six additional rabbits received 1.5% irbesartan eye drops twice daily in one eye for 28 days. Tolerability was assessed using a modified Draize test and corneal sensibility by Cochet Bonnet esthesiometry. Both γCD based eye drops were rapidly absorbed and distributed in the anterior and posterior ocular tissues. Within 0.5 h after single administration, the Cmax of irbesartan and candesartan in retinal tissue was 251 ± 142 ng/g and 63 ± 39 ng/g, respectively. In the vitreous humor, a Cmax of 14 ± 16 ng/g for irbesartan was reached 0.5 h after instillation while Cmax was below 2 ng/g for candesartan. For multiple dosing, the observed Cmean in retinal tissue was 338 ± 124 ng/g for irbesartan and 36 ± 10 ng/g for candesartan, whereas mean vitreous humor concentrations were 13 ± 5 ng/g and <2 ng/g, respectively. The highest plasma concentrations of both irbesartan (Cmax 5.64 ± 4.08 ng/mL) and candesartan (Cmax 4.32 ± 1.04 ng/mL) were reached 0.5 h (Tmax) after single administration. Local tolerability was favorable with no remarkable differences between the treated and the control eyes. These results indicate that irbesartan and candesartan in γCD based nanoparticle eye drops can be delivered to the retinal tissue of the rabbit’s eye in pharmacologically relevant concentrations. Moreover, safety and tolerability profiles appear to be favorable in the rabbit animal model.

Treatment of persistent epithelial defects with single-dose autologous serum eye drops

2021 ◽  
pp. 112067212110483
Author(s):  
Selma Özbek-Uzman ◽  
Züleyha Yalnız-Akkaya ◽  
Evin Şingar Özdemir ◽  
Ayşe Burcu
Keyword(s):  
Single Dose ◽  
Healing Time ◽  
Autologous Serum ◽  
Eye Drops ◽  
Artificial Tears ◽  
Duration Of Treatment ◽  
The Mean ◽  
Preservative Free ◽  
Serum Eye Drops

Purpose: We aimed to investigate the efficacy and safety of single-dose autologous serum eye drops (ASEDs) for treatment of persistent corneal epithelial defects (PEDs). Methods: About 34 eyes of 26 patients treated from March 2016 to May 2020 with a single dose of ASEDs for PEDs that did not respond to conventional treatment were retrospectively evaluated. Patient demographics, predisposing factors, size, and duration of the PED, duration of treatment, and dosage of ASEDs, PED healing time, success rate of the ASED treatment, and follow-up time after the onset of ASED treatment were recorded. Autologous serum eye drops (20%) were prepared by diluting the serum with preservative-free artificial tears in single-dose vials. Vials were stored at −20°C and used daily after dissolving. Results: The mean patient age was 47.0 ± 18.5 years, and 13 (50%) of the patients were male. The most common indication for ASEDs was PED after keratoplasty. The mean duration of ASED treatment was 8.5 ± 6.3 months, and mean follow-up time was 22.8 ± 12.2 months. Autologous serum eye drop treatment was effective in 25 (73.5%) eyes and partially effective in 5 (14.7%) eyes. None of the eyes displayed complications related to the treatment. Conclusion: In patients with PED for whom conservative treatment is insufficient, ASEDs prepared by dilution with preservative-free artificial tears in single-dose vials and administered based on the daily use principle appear to be effective and safe.

Comparison among adjuvant treatments for primary pterygium: a network meta-analysis

2017 ◽  
Vol 102 (6) ◽  
pp. 748-756 ◽  
Author(s):  
Ellen Carrara Fonseca ◽  
Eduardo Melani Rocha ◽  
Gustavo Viani Arruda
Keyword(s):  
Single Dose ◽  
Latin American ◽  
Meta Analysis ◽  
Indirect Comparison ◽  
Amniotic Membrane Transplantation ◽  
Surgical Removal ◽  
Eye Drops ◽  
Conjunctival Autograft ◽  
Pterygium Surgery ◽  
Primary Pterygium

PurposePterygium is a frequent ocular disease, where the major challenge is the high level of recurrence after its surgical removal. We performed a network meta-analysis to identify, among several adjuvant treatments for primary pterygium, which is the best to prevent recurrence.MethodsA search was conducted using PubMed, Scientific Electronic Library Online, Latin American and Caribbean Centre on Health Sciences and Cochrane Eyes and Vision Group Trials Register between 1993 and 2015 for randomisedclinical trials (RCTs) comparing adjuvant treatments following primary pterygium surgery.Results24 RCTs that studied 1815 eyes of 1668 patients were included and allowed direct and indirect comparison among 14 interventions through network meta-analysis. The rank from the best to worse treatment to prevent recurrence is: conjunctival autograft + ciclosporin 0.05% eye drops, bare sclera + intraoperativemitomycin C (MMC) <0.02%, bare sclera + beta therapy (2500 cGy single dose), conjunctival autograft + beta therapy (1000 cGy single dose), bare sclera + MMC 0.02% eye drops, conjunctival autograft, bare sclera + intraoperative MMC >0.02%, bare sclera + ciclosporin 0.05% eye drops, bare sclera + intraoperative 5-fluorouracil 5%, amniotic membrane transplantation, bare sclera + intraoperative MMC 0.02%, conjunctival autograft + bevacizumab 0.05% eye drops, bare sclera + bevacizumab 0.05% eye drops and bare sclera alone.ConclusionThe best adjuvant treatment to prevent recurrence after primary pterygium surgery is the association of conjunctival autograft and ciclosporin 0.05% eye drops. Bare sclera technique alone should be discontinued since it is associated with high recurrence rates.

Prospective Cohort Trial of Euphrasia Single-Dose Eye Drops in Conjunctivitis

2000 ◽  
Vol 6 (6) ◽  
pp. 499-508 ◽  
Author(s):  
Matthias Stoss ◽  
Christoph Michels ◽  
Ellen Peter ◽  
Ramona Beutke ◽  
Robert William Gorter
Keyword(s):  
Single Dose ◽  
Prospective Cohort ◽  
Eye Drops

Twelve-hour IOP control obtained by a single dose of timolol/pilocarpine combination eye drops

2009 ◽  
Vol 68 (3) ◽  
pp. 323-326 ◽  
Author(s):  
Kjell T. Løfors ◽  
Gunnar Høvding ◽  
Lars Viksmoen ◽  
Henry Aasved ◽  
Bjørn Bergaust ◽  
...  
Keyword(s):  
Single Dose ◽  
Eye Drops
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