Abstract:
PURPOSE:To measure high-resolution eye-specific displacements and deformations induced within the human LC microstructure by an acute increase in IOP. METHODS:Six eyes from donors aged 23 to 82 were scanned using second harmonic-generated (SHG) imaging at various levels of IOP from 10 to 50 mm Hg. An image registration technique was developed, tested, and used to find the deformation mapping between maximum intensity projection images acquired at low and elevated IOP. The mappings were analyzed to determine the magnitude and distribution of the IOP-induced displacements and deformations and contralateral similarity. RESULTS:Images of the LC were obtained and the registration technique was successful. IOP increases produced substantial, and potentially biologically significant, levels of in-plane LC stretch and compression (reaching 10%-25% medians and 20%-30% 75th percentiles). Deformations were sometimes highly focal and concentrated in regions as small as a few pores. Regions of largest displacement, stretch, compression, and shear did not colocalize. Displacements and strains were not normally distributed. Contralateral eyes did not always have more similar responses to IOP than unrelated eyes. Under elevated IOP, some LC regions were under bi-axial stretch, others under bi-axial compression. CONCLUSIONS:We obtained eye-specific measurements of the complex effects of IOP on the LC with unprecedented resolution in uncut and unfixed human eyes. Our technique was robust to electronic and speckle noise. Elevated IOP produced substantial in-plane LC stretch and compression. Further research will explore the effects of IOP on the LC in a three-dimensional framework.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Sigal IA,Grimm JL,Jan NJ,Reid K,Minckler DS,Brown DJdoi
10.1167/iovs.13-12724subject
Has Abstractpub_date
2014-01-02 00:00:00pages
1-15issue
1eissn
0146-0404issn
1552-5783pii
iovs.13-12724journal_volume
55pub_type
杂志文章abstract:PURPOSE:To assess the safety of a possible substitute treatment for intraocular steroid injections, intraocular injections of ketorolac tromethamine, one of the nonsteroidal anti-inflammatory drugs, were performed in rabbits. METHODS:Either 0.5% or 0.25% preservative-free ketorolac tromethamine ophthalmic solution (0....
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.05-0764
更新日期:2006-05-01 00:00:00
abstract::Freshly enucleated rabbit eyes were refrigerated at +4 degrees C under standard eye bank conditions for 2, 6, 9, and 21 days. One group of corneas with a scleral rim were excised and placed in M-K medium, stored for 18, 24, or 48 hr at +4 degrees C; they were then removed, and endothelial cell viability was evaluated ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1978-02-01 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:During development, the corneal epithelium (CE) and the conjunctiva are derived from the surface ectoderm. Here we have examined how, during development, the cells of these two issues become isolated from each other. Methods:Epithelia from the anterior eyes of chicken embryos were labeled with the fluorescent,...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-20737
更新日期:2017-03-01 00:00:00
abstract:PURPOSE:To analyze cone and rod phototransduction parameters from ERG a-waves in patients with RP and to determine the relationships among these parameters, age, and mode of inheritance. METHODS:Sets of four white flashes (3.2-4.4 log scotopic troland [scot td-s]) were presented in the dark. The same stimuli were late...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.02-1104
更新日期:2003-09-01 00:00:00
abstract:PURPOSE:This study investigated the relationship between amplitude and peak velocity of saccadic eye movements (the so-called main sequence) and the intra-individual variability of the main sequence. METHODS:Saccadic amplitudes and peak velocities were measured twice in 58 healthy subjects with an infrared reflection ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1993-12-01 00:00:00
abstract:PURPOSE:To characterize the differential expression of intraocular inflammatory cytokines in eyes with branch retinal vein occlusion (BRVO) and to assess their roles as prognostic determinants of BRVO. METHODS:A prospective cohort study of 38 eyes with BRVO. Aqueous humor samples were collected just before the intravi...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.10-6299
更新日期:2011-05-06 00:00:00
abstract::The histological distribution of R-cognin in chick retinas was determined from embryonic day 8 through 13 wk post-hatching by indirect immunofluorescence using polyclonal anticognin. On embryonic day 8, at a developmental stage without distinct retina layers, most of the cells within the tissue exhibited fluorescence....
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1986-03-01 00:00:00
abstract::Drusen are small, yellowish deposits that form under the retinal pigment epithelium (RPE) with senescence or under certain pathological conditions. The present study examined these structures under the scanning electron microscope. Tissue came from four eyes of 66- and 75-year-old donors who demonstrated widespread dr...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1987-04-01 00:00:00
abstract:PURPOSE:This study examined the association between peripapillary choroidal thickness (PCT) with age and race in a group of African descent (AD) and European descent (ED) subjects with normal eyes. METHODS:Optic nerve head images from enhanced depth imaging spectral-domain optical coherence tomography of 166 normal ey...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.14-16179
更新日期:2015-02-24 00:00:00
abstract:PURPOSE:To determine the accuracy of a history of cataract and cataract surgery (self-report and for a sibling), and to determine which demographic, cognitive, and medical factors are predictive of an accurate history. METHODS:All participants in the Salisbury Eye Evaluation (SEE) project and their locally resident si...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.02-1055
更新日期:2003-07-01 00:00:00
abstract:PURPOSE:To determine the interaction of M3 muscarinic receptors (M3AChR) and P2X(7) receptors to increase intracellular [Ca2+] ([Ca2+]i) and stimulate protein secretion in rat lacrimal gland cells. METHODS:Exorbital lacrimal glands from male Sprague-Dawley rats were divided into pieces or digested with collagenase to ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7210
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To study the spatial distribution of posterior pole choroidal thickness (CT) in healthy eyes using spectral domain optical coherence tomography (SD-OCT). METHODS:Fifty-nine eyes from 30 subjects with no retinal or choroidal disease were examined with high-definition (HD) OCT using macular volume cube scanning ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-8046
更新日期:2011-09-01 00:00:00
abstract:Purpose:To determine whether high glucose (HG) or diabetes alters mitochondrial morphology and promotes mitochondrial fragmentation in retinal vascular cells and thereby triggers apoptosis associated with diabetic retinopathy. Methods:To assess whether diabetes promotes mitochondrial fragmentation and thereby triggers...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.61.10.10
更新日期:2020-08-03 00:00:00
abstract:PURPOSE:To examine the relationship between retinal vascular geometric parameters with retinal nerve fiber layer (RNFL) and ganglion cell-inner plexiform layer (GC-IPL) parameters in nonglaucomatous subjects. METHODS:Study subjects were identified from the Singapore Chinese Eye Study (SCES), a population-based survey ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.13-12796
更新日期:2013-11-05 00:00:00
abstract:Purpose:To identify potentially pathogenic variants (PPVs) in Chinese familial exudative vitreoretinopathy (FEVR) patients in FZD4, LRP5, NDP, TSPAN12, ZNF408, and KIF11 genes. Methods:Blood samples were collected from probands and their parent(s). Genomic DNA was analyzed by next-generation sequencing, and the sequen...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.17-23541
更新日期:2018-11-01 00:00:00
abstract:PURPOSE:A pilot study of human neural retinal transplantation was undertaken to investigate three major issues: whether a safe surgical procedure could be devised for transplantation of neural retinal tissue into the subretinal space, whether the transplant would be accepted in the subretinal space, and whether an impr...
journal_title:Investigative ophthalmology & visual science
pub_type: 临床试验,杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract:PURPOSE:To determine the effect of pyrrolidine dithiocarbamate (PDTC), a nuclear factor (NF)-kappaB inhibitor, on chemokine and chemokine receptor expression and thus elucidate the role of NF-kappaB in the pathogenesis of experimental autoimmune anterior uveitis (EAAU). METHODS:Uveitis was induced in Lewis rats with t...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.04-0640
更新日期:2005-04-01 00:00:00
abstract:PURPOSE:To study relationships between glaucoma-sensitive components identified with frequency-domain analysis of global-flash multifocal electroretinogram (mfERG), regional retinal nerve fiber layer thickness (RNFLT), and local visual field sensitivity (VS). METHODS:Eleven macaque monkeys, including four controls and...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.10-6667
更新日期:2011-06-01 00:00:00
abstract:PURPOSE:To investigate the expression of humanin (HN) in human retinal pigment epithelial (hRPE) cells and its effect on oxidative stress-induced cell death, mitochondrial bioenergetics, and senescence. METHODS:Humanin localization in RPE cells and polarized RPE monolayers was assessed by confocal microscopy. Human RP...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-17053
更新日期:2016-03-01 00:00:00
abstract:PURPOSE:To determine variations in eye volume, surface area, and shape with refractive error in young children using a three-dimensional magnetic resonance imaging (MRI) model. METHODS:A subset of Singaporean Chinese boys enrolled in the population-based Strabismus, Amblyopia, and Refractive Error in Singapore (STARS)...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.11-7269
更新日期:2011-11-17 00:00:00
abstract::This study demonstrated that growth and differentiation of rabbit conjunctival epithelial cells could be promoted by such substrata as collagen gel, matrigel or various mixtures of collagen and matrigel in a defined culture system. On conventional plastic or glass culture, the conjunctival epithelial cells adopted a m...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1988-10-01 00:00:00
abstract:PURPOSE:Retinal basement membranes (BMs) serve as attachment sites for retinal pigment epithelial cells on Bruch's membrane and Müller cells (MCs) on the inner limiting membrane (ILM), providing polarity cues to adherent cells. The beta2 and gamma3 chains of laminin are key components of retinal BMs throughout developm...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.09-4645
更新日期:2010-03-01 00:00:00
abstract::Increased saccadic latencies were measured in the amblyopic eyes of subjects having amblyopia without strabismus, constant strabismus amblyopia, and intermittent strabismus. The subjects tracked a small, bright spot of light moving with random, horizontal step displacements of 0.25 to 8.5 degrees over the central reti...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1978-07-01 00:00:00
abstract:Purpose:To investigate brain white matter pathways using magnetic resonance diffusion tensor imaging (DTI) and correlate the findings with developmental outcomes at 18 months of corrected age in preterm infants with and without retinopathy of prematurity (ROP). Methods:In this prospective cohort study, probabilistic m...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.62.2.2
更新日期:2021-02-01 00:00:00
abstract:PURPOSE:Compensatory eye movements (CEM) maintain a stable image on the retina by minimizing retinal slip. The optokinetic reflex (OKR) and vestibulo-ocular reflex (VOR) compensate for low and high velocity stimuli, respectively. The OKR system is known to be highly nonlinear. The VOR is generally modeled as a linear s...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-18605
更新日期:2016-07-01 00:00:00
abstract:Purpose:To compare cross-sectional choroidal morphology in rhesus macaque and human eyes using enhanced-depth imaging optical coherence tomography (EDI-OCT) and histologic analysis. Methods:Enhanced-depth imaging-OCT images from 25 rhesus macaque and 30 human eyes were evaluated for choriocapillaris and choroidal-scle...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.16-20070
更新日期:2016-10-01 00:00:00
abstract:PURPOSE:One of the difficulties in modeling visual field (VF) data is the sometimes large and correlated measurement errors in the point-wise sensitivity estimates. As these errors affect all locations of the same VF, we propose to model them as global visit effects (GVE). We evaluate this model and show the effect it ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.15-16691
更新日期:2015-07-01 00:00:00
abstract:PURPOSE:In uveal melanoma, both tumor size and an inflammatory phenotype have been shown to correlate with a poor clinical prognosis. The purpose of this study was to identify whether inflammatory cytokines were present in the vitreous of eyes with uveal melanoma and to determine whether the vitreal concentration of cy...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:10.1167/iovs.12-10123
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:To study possible causes of motility disturbances that may result from orbital decompression surgery in patients with Graves orbitopathy and especially the role of rectus extraocular muscle paths. METHODS:Sixteen patients with Graves orbitopathy were studied before and 3 to 6 months after translid (6 patients)...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2002-02-01 00:00:00