Abstract:
Purpose:To investigate whether plasma rich in growth factors (PRGF) eye drops maintain their biological potential after a freeze drying process. The addition of a lyoprotectant like trehalose was also evaluated. Methods:Blood from three healthy donors was collected to obtain eye drops by PRGF technology. The resultant eye drops were divided in four groups: PRGF, freeze-dried PRGF (PRGF lyo), and PRGF lyophilized mixed with 2,5% trehalose (PRGF lyo+2.5T) or 5% trehalose (PRGF lyof+5T). Chemical and biological characteristics were evaluated. Photorefractive keratectomy was performed on C57BL/6 mice which were divided in three treatment groups: control, PRGF, and PRGF lyo. Corneal wound healing and haze formation were evaluated macroscopically. Eyes were collected at 1, 2, 3, and 7 days after surgery, and were processed for histologic studies. Results:The pH values of PRGF samples increased significantly after the lyophilization process. Osmolarity levels increased significantly in PRGF samples mixed with trehalose in comparison with PRGF samples without protectants. The freeze drying process maintained growth factors levels as well as the biological properties of PRGF eye drops even without the use of lyoprotectants. PRGF lyo treatment significantly decreased the re-epithelialization time and haze formation in photorefractive keratectomy-treated corneas regarding PRGF and control groups. Furthermore, the PRGF lyo group significantly decreased the number of smooth muscle actin-positive cells in comparison with the control group at each time of the study and at days 2 and 3 in the PRGF group. Conclusions:The freeze drying process preserves the protein and growth factor content as well as the biological properties of PRGF eye drops, even without the use of protectants. Freeze-dried PRGF eye drops accelerate corneal tissue regeneration after photorefractive keratectomy in comparison with the control group. Translational Relevance:Our study shows the feasibility to preserve the biological capability of PRGF eye drops as freeze-dried formulation, avoiding the addition of protectants.
journal_name
Transl Vis Sci Technoljournal_title
Translational vision science & technologyauthors
Anitua E,de la Fuente M,Alcalde I,Sanchez C,Merayo-Lloves J,Muruzabal Fdoi
10.1167/tvst.9.7.35subject
Has Abstractpub_date
2020-06-25 00:00:00pages
35issue
7issn
2164-2591pii
TVST-19-2129journal_volume
9pub_type
杂志文章abstract:PURPOSE:To investigate whether tear hyperosmolarity, a feature of dry eye disease (DED), affects central corneal thickness (CCT), corneal light reflectivity, and/or tear film reflectivity. METHODS:This prospective, cross-sectional study involved 48 participants (38 with hyperosmolar tears and 10 controls with normo-os...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.6.3.6
更新日期:2017-05-22 00:00:00
abstract:PURPOSE:We performed video-oculography to evaluate vergence eye movement abnormalities in students diagnosed clinically with vergence disorders. We tested the efficiency of a novel rehabilitation method and evaluated its benefits with video-oculography cross-correlated with clinical tests and symptomatology. METHODS:A...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.2.8
更新日期:2016-03-11 00:00:00
abstract:Purpose:To describe a new technique for mapping parafoveal intercapillary areas (PICAs) using optical coherence tomography angiography (OCTA), and demonstrate its utility for quantifying parafoveal nonperfusion in diabetic retinopathy (DR). Methods:Nineteen controls, 15 diabetics with no retinopathy (noDR), 15 with no...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.7.4.4
更新日期:2018-07-12 00:00:00
abstract:Purpose:To image the human trabecular meshwork (TM) in vivo using adaptive optics gonioscopy (AOG) with approximately 2-μm lateral resolution. Methods:An existing Indiana University adaptive optics scanning laser ophthalmoscope was altered by adding a 12-mm button lens to a clinical gonioscopic lens allowing high-reso...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.8.5.5
更新日期:2019-09-11 00:00:00
abstract:Purpose:Congenital stationary night blindness 2A (CSNB2A) is a genetic retinal disorder characterized by poor visual acuity, nystagmus, strabismus, and other signs of retinal dysfunction resulting from mutations in Cacna1f-the gene coding for the pore-forming subunit of the calcium channel CaV1.4. Mouse models of CSNB2...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.11.19
更新日期:2020-10-14 00:00:00
abstract:PURPOSE:Optical coherence tomography angiography (OCT-A) allows noninvasive visualization of retinal vessels in vivo. OCT-A was used to characterize the vascular network of the mouse retina and was compared with fluorescein angiography (FA) and histology. METHODS:In the present study, OCT-A based on a Heidelberg Engin...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.4.11
更新日期:2016-08-18 00:00:00
abstract:Purpose:To describe a minimally invasive experimental model of acute ocular hypertension (OHT) with characteristics of acute angle closure (AAC). Methods:Adult C57/Bl6 mice (n = 31) were subjected to OHT in one eye using a modified circumlimbal suture technique that elevated intraocular pressure (IOP) for 30 minutes. ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.7.24
更新日期:2020-06-22 00:00:00
abstract:Purpose:To explore the contribution of crystalline lens fluorescence to fluorescence lifetimes measured with fluorescence lifetime imaging ophthalmoscopy (FLIO) and to propose a computational model to reduce the lens influence. Methods:FLIO, which detects autofluorescence decay over time in a short-wavelength spectral...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.8.13
更新日期:2020-07-09 00:00:00
abstract:PURPOSE:We developed and evaluated a training procedure for marking the endpoints of the ellipsoid zone (EZ), also known as the inner segment/outer segment (IS/OS) border, on frequency domain optical coherence tomography (fdOCT) scans from patients with retinitis pigmentosa (RP). METHODS:A manual for marking EZ endpoi...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.3.6
更新日期:2016-05-17 00:00:00
abstract:PURPOSE:Developing a novel image enhancement method so that nonframe-averaged optical coherence tomography (OCT) images become comparable to active eye-tracking frame-averaged OCT images. METHODS:Twenty-one eyes of 21 healthy volunteers were scanned with noneye-tracking nonframe-averaged OCT device and active eye-trac...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.1.1
更新日期:2016-01-11 00:00:00
abstract:PURPOSE:The goal of this analysis was to determine the test-retest variability of functional and structural measures from a cohort of patients with advanced forms of Stargardt Disease (STGD) participating in the SAR422459 (NCT01367444) gene therapy clinical trial. METHODS:Twenty-two participants, aged 24 to 66, diagno...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.5.10
更新日期:2016-10-01 00:00:00
abstract:PURPOSE:To evaluate the impact of high-speed cut rates (up to 7500 cuts per minute [cpm]) on vitreous flow through various gauge probes. METHODS:An open-sky vitrectomy technique was performed on porcine eyes using the CONSTELLATION Vision System with three different gauges of dual-pneumatic probes (27+-, 25+-, and 23-...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.1.7
更新日期:2016-02-22 00:00:00
abstract:Purpose:Glaucoma drainage device (GDD) implantation can lead to corneal decompensation. We evaluated changes over time in oxygen tension and in the metabolic environment of the aqueous humor after GDD implantation in the rabbit eye. Methods:Ahmed Glaucoma Valves were implanted in the left eyes of eight male New Zealan...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.7.1.14
更新日期:2018-02-02 00:00:00
abstract:Purpose:To culturally and linguistically adapt the Convergence Insufficiency Symptom Survey (CISS) to Spanish and assess the psychometric performance of the new version through Rasch analysis and classical test theory methods. Methods:The Spanish version of the CISS (CISSVE) was completed by 449 subjects (9-30 years o...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.4.23
更新日期:2020-03-23 00:00:00
abstract:PURPOSE:To evaluate the safety, tolerability, and intraocular pressure (IOP)-lowering effect of Latrunculin-B (Lat-B), a marine macrolide that disrupts the actin cytoskeleton, in patients with ocular hypertension (OHT) or early primary open-angle glaucoma (POAG). METHODS:In this Phase I, multicenter, double-masked, ra...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.3.5.1
更新日期:2014-09-03 00:00:00
abstract:Purpose:Subretinal fibrosis (SRFib) is an important cause of permanent loss-of-vision diseases with submacular neovascularization, but a reliable diagnostic method is currently missing. This study uses polarization-sensitive optical coherence tomography (PS-OCT) to detect SRFib within retinal lesions by measurement of ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.4.13
更新日期:2020-03-16 00:00:00
abstract:Purpose:Evaluate efficiency, precision, and validity of RetCAT, which comprises ten diabetic retinopathy (DR) quality of life (QoL) computerized adaptive tests (CATs). Methods:In this cross-sectional clinical study, 183 English and/or Mandarin-speaking participants with DR (mean age ± standard deviation [SD] 56.4 ± 11...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.7.3
更新日期:2020-06-03 00:00:00
abstract:Purpose:We evaluate the antimicrobial effect of toluidine blue O (TBO)-mediated photodynamic antimicrobial chemotherapy (PACT) on Staphylococcus epidermidis and Staphylococcus aureus isolated from ocular surface infection. Methods:We selected 24 strains of bacteria for this study. The antimicrobial effect of different...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.8.3.45
更新日期:2019-06-21 00:00:00
abstract:Purpose:The purpose of this study is to evaluate whether a single best image can represent central endothelial cell density (ECD) in corneas of differing cell size coefficient of variance (CV). Methods:Four hundred one healthy eyes but with variant CV values were enrolled. For each eye, three nonoverlapping central co...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.8.3.23
更新日期:2019-05-29 00:00:00
abstract:Purpose:To examine repeatability and reproducibility of ellipsoid zone (EZ) width measurements in patients with retinitis pigmentosa (RP) using a longitudinal reflectivity profile (LRP) analysis. Methods:We examined Bioptigen optical coherence tomography (OCT) scans from 48 subjects with RP or Usher syndrome. Nominal ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.7.3.13
更新日期:2018-06-04 00:00:00
abstract:Purpose:To compare the antimicrobial effect of topical anesthetics, antivirals, antibiotics, and biocides on the viability of Acanthamoeba cysts and trophozoites in vitro. Methods:Amoebicidal and cysticidal assays were performed against both trophozoites and cysts of Acanthamoeba castellanii (ATCC 50370) and Acanthamo...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.8.5.17
更新日期:2019-09-25 00:00:00
abstract:Purpose:To investigate the potential of statistical and machine learning approaches to determine the diabetic status of patients from optical coherence tomography angiography (OCT-A) images. Methods:This was a retrospective cross-sectional observational study based at Manchester Royal Eye Hospital, United Kingdom. OCT...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.4.2
更新日期:2020-03-09 00:00:00
abstract:Purpose:Semiautomated software applications derive quantitative retinal vascular parameters from fundus camera images. However, the extent of agreement between measurements from different applications is unclear. We evaluate the agreement between retinal measures from two software applications, the Singapore "I" Vessel...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.7.2.12
更新日期:2018-03-23 00:00:00
abstract:Purpose:To compare the detection of retinal pigment epithelium (RPE) atrophy in short-wavelength (SW-AF) and near-infrared autofluorescence (NIR-AF) images in Stargardt disease (STGD1) patients. Methods:SW-AF and NIR-AF images (115 eyes from 115 patients) were analyzed by two independent graders. Hypoautofluorescent (...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.10.1.3
更新日期:2021-01-05 00:00:00
abstract:PURPOSE:To validate Gaussian mixture-model with expectation maximization (GEM) and variational Bayesian independent component analysis mixture-models (VIM) for detecting glaucomatous progression along visual field (VF) defect patterns (GEM-progression of patterns (POP) and VIM-POP). To compare GEM-POP and VIM-POP with ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.5.3.2
更新日期:2016-05-03 00:00:00
abstract:Purpose:To determine whether multicolor scanning laser ophthalmoscopy (MC-SLO) was better than color fundus photography (CFP) to enhance residents and specialists' preoperative decision-making and intraoperative performance on the epiretinal membrane (ERM). Methods:Consecutive patients with idiopathic ERM were recruit...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.13.36
更新日期:2020-12-18 00:00:00
abstract:PURPOSE:To develop an automated method for quantifying vitreous signal intensity on optical coherence tomography (OCT), with particular application for use in the assessment of vitreous inflammation. METHODS:This retrospective, observational case-control series comprised 30 patients (30 eyes), with vitreous haze secon...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.4.5.4
更新日期:2015-09-16 00:00:00
abstract:Purpose:Genipin has been proposed as a possible neuroprotective therapy in myopia and glaucoma. Here, we aim to determine the effects of prolonged genipin-induced scleral stiffening on visual function. Methods:Eyes from Brown Norway rats were treated in vivo with either a single 15 mM genipin retrobulbar injection or ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.10.8
更新日期:2020-09-08 00:00:00
abstract:Purpose:To determine the effectiveness of intravitreal aflibercept (IVA) on the retinal function in eyes with diabetic macular edema (DME). Methods:Twenty-five eyes of 25 patients with DME were treated with three consecutive monthly IVA injections. The retinal sensitivities (RS) within the central 10° were determined ...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.9.11.2
更新日期:2020-10-06 00:00:00
abstract:Purpose:To compare the diagnostic ability of the vessel parameters in macular and peripapillary regions measured using spectral-domain optical coherence tomography angiography (SD-OCTA) in differentiating primary open-angle glaucoma (POAG) from healthy eyes. Methods:POAG patients and healthy subjects underwent 6 × 6-m...
journal_title:Translational vision science & technology
pub_type: 杂志文章
doi:10.1167/tvst.7.6.21
更新日期:2018-12-06 00:00:00