Abstract:
:We describe an instrument called a scanning ocular spectrofluorophotometer (SOSF) that measures fluorescence in a two-dimensional cross-section through the anterior chamber and cornea and provides the ability to change excitation and emission wavelengths rapidly. The output of a xenon arc lamp is filtered by a diffraction grating monochromator which has a bandpass of 4 nm and a range of 400 to 800 nm. Light emitted from the fluorophore is filtered by a variable wavelength interference filter which has a bandpass of approximately 11 nm and a range of 400 to 700 nm. To demonstrate the versatility of the instrument, we measured the spectra of fluorescein, fluorescein glucuronide and rhodamine B in the anterior chambers and corneas of pigmented rabbits after topical administration. We also measured simultaneously and independently the redistribution and disappearance of a mixture of fluorescein-labeled dextran and rhodamine B after intracameral injection. Rhodamine B was very rapidly absorbed by the cornea and lens while fluorescein-dextran was not measurable in the cornea before 4 hr. The SOSF provides a means of carrying out spectrofluorophotometry in the living eye and carrying out kinetic experiments which would otherwise be awkward or impossible.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
McLaren JW,Brubaker RFsubject
Has Abstractpub_date
1988-08-01 00:00:00pages
1285-93issue
8eissn
0146-0404issn
1552-5783journal_volume
29pub_type
杂志文章abstract:PURPOSE:Dietary supplementation with vitamin A is sometimes prescribed as a treatment for retinitis pigmentosa, a group of inherited retinal degenerations that cause progressive blindness. Loss-of-function mutations in the ABCA4 gene are responsible for a subset of recessive retinitis pigmentosa. Other mutant alleles o...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.07-1470
更新日期:2008-09-01 00:00:00
abstract:PURPOSE:Concentrations of aqueous humor endothelin (ET)-1 are increased in patients with primary open-angle glaucoma (POAG) as well as in animal models of glaucoma. Glucocorticoids have also been associated with glaucoma, in that topical administration of glucocorticoids can increase intraocular pressure by increasing ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.03-0463
更新日期:2003-12-01 00:00:00
abstract:PURPOSE:To investigate the application of anterior corneal and ocular aberrations in detecting mildly ectatic corneas. METHODS:This study retrospectively reviewed the data of 220 eyes separated into three groups by the NIDEK Corneal Navigator System automated corneal classification software: normal (N) (n = 123); form...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-8803
更新日期:2012-05-17 00:00:00
abstract::The authors have examined the fate of intravitreally injected liposomes in the aphakic, vitrectomized eye of the rabbit. Liposomes labelled with 125[I]-p-hydroxybenzimidylphosphatidylethanolamine were eliminated rapidly from the intraocular fluid. Nonetheless, a significant fraction of these liposomes were found to bi...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1987-05-01 00:00:00
abstract:PURPOSE:Cortical cataract in humans is associated with Ca2+ overload and protein loss, and although animal models of cataract have implicated Ca2+-activated proteases in this process, it remains to be determined whether the human lens responds in this manner to conditions of Ca2+ overload. The purpose of these experime...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2000-07-01 00:00:00
abstract:PURPOSE:Ibuprofen and indomethacin are nonselective prostaglandin synthetase inhibitors that have been shown to improve oxygen-induced retinopathy in mice. Vascular endothelial growth factor (VEGF), insulin-like growth factor (IGF)-I, and growth hormone (GH) are potent growth factors involved in retinal development. Th...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.06-0057
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:Corneas with scars and certain chronic pathologic conditions contain highly sulfated dermatan sulfate, but little is known of the core proteins that carry these atypical glycosaminoglycans. In this study the proteoglycan proteins attached to dermatan sulfate in normal and pathologic human corneas were examined ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1998-09-01 00:00:00
abstract:PURPOSE:To test whether a diet supplemented with coenzyme Q10 (CoQ10) ameliorates glutamate excitotoxicity and oxidative stress-mediated retinal ganglion cell (RGC) degeneration by preventing mitochondrial alterations in the retina of glaucomatous DBA/2J mice. METHODS:Preglaucomatous DBA/2J and age-matched control DBA...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.13-12564
更新日期:2014-02-18 00:00:00
abstract:PURPOSE:To evaluate the absolute blood flow rate in a single choroidal vessel using Doppler optical coherence tomography (OCT). METHODS:Three choroidal vessels were selected in the right eye of three normal subjects, and were measured with Doppler OCT at a 1020-nm probe wavelength. The pulsatile change of the blood fl...
journal_title:Investigative ophthalmology & visual science
pub_type: 临床试验,杂志文章
doi:10.1167/iovs.12-10666
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:To investigate the distribution of inflammatory mediators such as interleukin (IL)-1beta and tumor necrosis factor (TNF)-alpha and angiogenic cytokines such as vascular endothelial growth factor (VEGF) and to identify their cellular source in surgically excised choroidal neovascular membranes (CNVMs) of various...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1999-08-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the changes in tumor burden and hypoxia in the LH(BETA)T(AG) retinal tumors after treatment with a focal, single-modality, and combination therapy using periocular carboplatin and 2-deoxy-d-glucose (2-DG). METHODS:Seventeen-week-old LH(BETA)T(AG) transgenic mice (n = 25) w...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.09-5033
更新日期:2010-12-01 00:00:00
abstract:PURPOSE:To investigate whether signaling pathways that incorporate protein tyrosine kinases and phosphatases regulate PKC-sensitive, volume-sensitive Cl(-) currents (I(Cl,vol)) in cultured rabbit nonpigmented ciliary epithelial cells. METHODS:Activation of I(Cl,vol) in response to hyposmotic stimulation was recorded w...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00
abstract:PURPOSE:To investigate regional differences in Ca(2+) mobilization kinetics in the intact human lens produced by exposure to agonists of tyrosine-kinase and G-protein-coupled receptors and to characterize the major receptor subtypes involved in Ca(2+) signaling in the different regions. METHODS:Whole human lenses were...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2001-09-01 00:00:00
abstract:PURPOSE:To determine whether fellow eyes with normal visual acuity of patients with unilateral neovascular age-related macular degeneration (AMD) have retinal malfunction. METHODS:Foveal cone electroretinograms (ERGs) were recorded from fellow eyes with visual acuities of 20/25 or better of 73 patients with unilateral...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1993-11-01 00:00:00
abstract::Vanadate, an inhibitor of (Na+ + K+)ATPase, also inhibits active transepithelial Na+ and Cl- transport (measured as short-circuit current) in the isolated cornea in concentrations of 10(-4)M to 10(-3)M. The disulfonic stilbene, DIDS, does not affect the short-circuit current per se, but it prevents the inhibitory effe...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1981-06-01 00:00:00
abstract:Purpose:Keratoconus (KTCN) is a complex eye disorder resulting in loss of visual function. Its development is affected by genetic and environmental components. The aim of this study was to unravel the role of epigenetic factors in KTCN. Methods:To verify if DNA methylation may play a role in KTCN development, reduced ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.18-25916
更新日期:2019-04-01 00:00:00
abstract:PURPOSE:To study the diameter response of retinal arterioles as a function of the arteriolar diameter. METHODS:Ten healthy young volunteers aged 22 to 33 years were subjected to diameter measurement of four successive segments of a retinal arteriole with a retinal vessel analyzer (RVA). At each of the segments, the di...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.06-0360
更新日期:2007-01-01 00:00:00
abstract:Purpose:Synthesis of keratan sulfate (KS) relies on coordinated action of multiple enzymes, including the N-acetylglucosamine-transferring enzyme, β-1,3-N-acetylglucosaminyltransferase-7 (β3GnT7). A mouse model deficient in β3GnT7 was developed to explore structural changes in KS and the extracellular matrix (ECM; i.e....
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.17-22716
更新日期:2018-03-01 00:00:00
abstract:Purpose:Treatment success in clinical trials for AMD would ideally be aligned to measurable performance in visual tasks rather than imperceptible changes on clinical charts. We test the hypothesis that patients with dry AMD perform worse than visually healthy peers on computer-based surrogates of "real-world" visual se...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-21122
更新日期:2017-03-01 00:00:00
abstract:PURPOSE:The purpose of this study was to determine whether 25-hydroxyvitamin D(3) (25(OH)D(3)) and/or its active metabolite, 1α,25-dihydroxyvitamin D(3) (1,25(OH)(2)D(3)), can enhance corneal epithelial barrier function. The authors also determined if corneas contain mRNA for the vitamin D receptor (VDR) and 1α-hydroxy...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7605
更新日期:2011-09-21 00:00:00
abstract:PURPOSE:Identification of causative mutations for retinal blinding disorders is often limited by restricted understanding of gene expression and underlying molecular mechanisms that trigger degenerative processes. This study was conducted to develop a catalog of canine retina-expressed genes that would provide a unique...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-1463
更新日期:2006-06-01 00:00:00
abstract:PURPOSE:To assess the retinal macrophage response to cannulation of the anterior chamber (AC) and acute elevation of intraocular pressure (IOP) in adult mice. METHODS:Eyes from 12-month-old C57BL/6J WT mice were subject to IOP increase (50 mm Hg for 30 minutes) by direct cannulation of the AC. Fellow eyes were either ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.13-11865
更新日期:2013-04-30 00:00:00
abstract:PURPOSE:To examine the expression of VEGF in extranodal marginal zone B-cell lymphoma (EMZL) and reactive lymphoid hyperplasia (RLH) of human ocular adnexa, and analyze the correlation with the intratumoral microvessel density (MVD). METHODS:Twenty-two EMZL and 16 RLH tissues were examined in this study. Paraformaldeh...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.13-13510
更新日期:2014-05-13 00:00:00
abstract::In previous studies we found that a mild thermal burn of the vitamin A-deficient rat cornea caused collagenase release into the medium of corneas placed in culture media 72 hr after applying the burn. Collagenase was released only on day 1 of culture and was not released from identically burned corneas of control rats...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1982-01-01 00:00:00
abstract::Rabbit corneas were treated in vitro and in vivo with cholera toxin (CTX), a specific and irreversible activator of adenylate cyclase. Tissue pieces incubated in vitro in the presence of 10 mug/ml CTX for 15 min continuously synthesized adenosine 3',5'-monophosphate (cyclic AMP) at an increased rate for 3 hr in the ab...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1980-11-01 00:00:00
abstract:PURPOSE:Subtle structural and functional neuroretinal changes have been described in human immunodeficiency virus (HIV)-infected adults without retinitis treated with combination antiretroviral therapy (cART). However, studies on this subject in HIV-infected children are scarce. This study aimed to assess the presence ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-16855
更新日期:2015-06-01 00:00:00
abstract:PURPOSE:Age and advanced disease in the fellow eye are the two most important risk factors for age-related macular degeneration (AMD). In this study, the authors investigated the relationship between these variables and the optical density of macular pigment (MP) in a group of subjects from a northern European populati...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2001-02-01 00:00:00
abstract:PURPOSE:Insulin-like growth factor 2 receptor (IGF2R) associates with ligands that influence wound healing outcomes. However, the expression pattern of IGF2R and its role in the cornea is unknown. METHODS:Human keratocytes were isolated from donor corneas. Fibroblasts (fibroblast growth factor 2 [FGF2]-treated) or myo...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-15179
更新日期:2014-10-30 00:00:00
abstract::The rhodopsin content of the human retina was determined spectrophotometrically. Retinas were removed completely by using an in vitro technique based on a simulation of retinal detachment. This method provides a total recovery of rod outer segments which contain the rhodopsin visual pigment or its apoprotein, opsin. U...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract:PURPOSE:Previous studies assessed the associations between Helicobacter pylori infection and open-angle glaucoma (OAG) and produced inconsistent results. Therefore, we performed a meta-analysis to evaluate the effects of H. pylori infection on OAG risk. METHODS:Relevant studies that reported the associations between H...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,meta分析,评审
doi:10.1167/iovs.15-17059
更新日期:2015-08-01 00:00:00