Abstract：
PURPOSE:To evaluate the contribution that fixation errors make to the overall variability of perimetric responses in patients with glaucoma. METHODS:Frequency of seeing curves were established, with and without fixation error correction, at two locations in each of 14 patients with glaucoma and good visual acuity. One location corresponded to a relatively normal region of the visual field, whereas the second corresponded to a region in which there was a sensitivity deficit. All patients had an acuity of better than 20/63 (except one whose acuity was 20/100). The locations of the first and fourth Purkinje images of a collimated infrared source were used to give a measure of eye position, during each stimulus presentation (accuracy 10 minutes of arc). RESULTS:Considerable variation was found in patient fixation accuracy. In the worst case, fixation was within 30 minutes of the target in only 7% of presentations whereas in the best, it was within this range in more than 60%. No relationship was found between accuracy of fixation and extent of loss. The gradient of the frequency of seeing curve was found to be shallow at regions of reduced sensitivity, a finding that supports the recognized relationship between variability and sensitivity deficit. A recalculation of the frequency of seeing curves, using only those responses in which the patient's fixation was within a specified range ( < 60 minutes of arc), did not show a meaningful reduction in variability at either location. CONCLUSIONS:It is concluded that fixation errors, though contributing to variability, are not the major cause of the increased variability seen at locations with reduced sensitivity.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Henson DB,Evans J,Chauhan BC,Lane Csubject
Has Abstractpub_date
1996-02-01 00:00:00pages
444-50issue
2eissn
0146-0404issn
1552-5783journal_volume
37pub_type
杂志文章abstract：PURPOSE:To evaluate the developmental expression of Thy-1 in the retina. Thy-1, the most abundant mammalian neuronal surface glycoprotein, is likely to play a significant role in retinal development. In the mammalian retina, it is found predominantly, if not exclusively, on retinal ganglion cells. METHODS:Rat retinae ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1996-06-01 00:00:00
abstract：PURPOSE:Peripheral and limbal corneal stromal cells (PLCSCs), which contain keratocytes, have a complex phenotype. Knowledge of keratocyte cell properties, function, and origin is limited. Evidence available thus far has suggested both mesenchymal stromal and hematopoietic characteristics. Multipotent mesenchymal strom...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-8673
更新日期：2012-08-03 00:00:00
abstract：PURPOSE:To determine the effects of enzymes on mammalian vitreous gel and to thus infer the structural roles of hyaluronan and chondroitin sulfate in the gel. METHODS:The wet weights of bovine vitreous gels were compared before and after incubation with Streptomyces hyaluronan lyase, chondroitin ABC lyase, testicular ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1999-09-01 00:00:00
abstract：PURPOSE:As the number of cases of Acanthamoeba spp. keratitis (AK) is constantly growing, new diagnostic tools are needed to confirm and guide ophthalmologists in this clinically problematic diagnosis. Molecular diagnosis is particularly well adapted, although only a few real-time PCR techniques have been described rec...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-8587
更新日期：2012-05-14 00:00:00
abstract：Purpose:Activation of proteolytic enzymes, calpains and caspases, have been observed in many models of retinal disease. We previously demonstrated calpain activation in monkey retinal explants cultured under hypoxia. However, cellular responses are often species-specific. The purpose of the present study was to determi...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.13.13
更新日期：2020-11-02 00:00:00
abstract：PURPOSE:To describe the prevalence of AMD in an elderly urban Chinese population in China. METHODS:A population-based, cross-sectional study was conducted using a cluster random sample of residents aged 50 years or older living in the Jiangning Road Subdistrict, Jing'an District, Shanghai, China. All participants unde...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-14899
更新日期：2014-09-04 00:00:00
abstract：Purpose:We investigated whether fundus autofluorescence (FAF) lifetimes in patients with retinitis pigmentosa display a disease-specific lifetime pattern. Methods:Fundus autofluorescence lifetime imaging ophthalmoscopy (FLIO) was performed in two spectral channels (498-560 and 560-720 nm) after excitation with a 473 n...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-23336
更新日期：2018-04-01 00:00:00
abstract：PURPOSE:A prior study showed that cholinergic agonists activate phospholipase D (PLD). The purpose of this study was to determine whether cholinergic agonists use the PLD pathway to alter protein secretion and to identify the molecular signaling components of this pathway in rat lacrimal gland acini. METHODS:Rat lacri...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6209
更新日期：2011-04-06 00:00:00
abstract：PURPOSE:meso-Zeaxanthin is a carotenoid that is rarely encountered in nature outside of the vertebrate eye. It is not a constituent of a normal human diet, yet this carotenoid comprises one-third of the primate macular pigment. In the current study, we undertook a systematic approach to biochemically characterize the p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-19111
更新日期：2016-04-01 00:00:00
abstract：PURPOSE:The serum- and glucocorticoid-inducible kinase SGK1 regulates several epithelial channels and transporters, the related protein kinase B (PKB) regulates glucose transport. SGK1 is expressed in the brain and could thus regulate glial and/or neuronal transport processes. The present study explores whether SGK1 is...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.03-0062
更新日期：2004-05-01 00:00:00
abstract：:Particulate fractions from fresh bovine corneal endothelium exhibited high affinity, specific binding by a potent muscarinic cholinergic radioligand, [3H]QNB. Particulate fraction binding sites exhibited half maximal binding at approximately 0.3 nM [3H]QNB and reached a maximal binding capacity of 820 fmoles/mg of pro...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：PURPOSE:To determine directional changes in peripheral corneal thickness and corneal astigmatism over a range of severity of Fuchs' endothelial corneal dystrophy (FECD). METHODS:Eyes with FECD were categorized as mild, moderate, or advanced according to the area and confluence of guttae and the presence of clinical ed...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-17311
更新日期：2015-09-01 00:00:00
abstract：PURPOSE:To demonstrate the conjunctival alterations in patients with Sjögren's (SSDE) and non-Sjögren's syndrome dry eye (NSSDE) using a new generation confocal microscope (HRTII/ RCM; Heidelberg Engineering, Heidelberg, Germany), in a prospective controlled study. METHODS:Twenty-eight right eyes of 28 patients with S...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-2722
更新日期：2010-01-01 00:00:00
abstract：PURPOSE:Retinopathy of prematurity (ROP) is a major cause of visual handicap in the pediatric population. To date, this disorder is thought to stem from deficient retinal vascularization. Intriguingly, functional electrophysiological studies in patients with mild or moderate ROP and in the oxygen-induced retinopathy (O...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6742
更新日期：2011-08-05 00:00:00
abstract：PURPOSE:To evaluate how aging alters 24-hour measurements of intraocular pressure (IOP) in the sitting and supine body positions. METHODS:Fifteen older volunteers with healthy eyes (ages, 53-71 years) were each housed for 1 day in a sleep laboratory. An 8-hour accustomed sleep period was assigned to each subject. Ever...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-8763
更新日期：2012-01-10 00:00:00
abstract：PURPOSE:P1 is the major positive component of pattern-reversal visual evoked potentials (PR-VEPs). The rapid decrease of its latency correlates with the progressive myelination in the developing infant brain, which affects signal transmission in the visual system. An age-dependent phase shift, analogous to P1 peak late...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.14-13906
更新日期：2014-04-21 00:00:00
abstract：PURPOSE:This study describes the effects of the cyclic adenosine monophosphate (cAMP) pathway on the tight junctional barrier of the corneal endothelium, which plays a critical role in maintaining the corneal stroma in an underhydrated, transparent state. METHODS:Subcultured bovine corneal endothelial cells grown on f...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:Tendon and cornea of 17-day-old chick embryos primarily synthesize type I collagen as the major collagenous component nd type V collagen as a minor collagenous component. Matrix-free cells isolated from cornea and tendon synthesize and secrete mainly type I procollagen. A short lag period for the secretion of collagen...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1982-12-01 00:00:00
abstract：:Retinoblastoma patients have cellular and humoral reactivity towards antigens expressed on retinoblastoma cells. We report the ultrastructural, cytogenetic, and immunologic features of four new retinoblastoma derived tissue culture cell lines. Studies with hybridoma produced monoclonal antibodies demonstrate that thes...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：PURPOSE:To determine the distribution of perceived visual ability for functional vision performance among persons with low vision in the Indian state of Andhra Pradesh. METHODS:As part of a population-based epidemiologic study, the Andhra Pradesh Eye Disease Study (APEDS), a 16-item visual function questionnaire was d...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-0243
更新日期：2004-10-01 00:00:00
abstract：PURPOSE:To understand the genetic regulatory pathways underlying the retinoic acid (RA) induction of cone arrestin, gene array technology and other molecular tools were used to profile global gene expression changes in human retinoblastoma cells. METHODS:Weri-Rb-1 retinoblastoma cells were cultured in the absence or p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.02-0434
更新日期：2003-03-01 00:00:00
abstract：Purpose:To compare the visual field (VF) progression among high tension glaucoma (HTG), primary angle closure glaucoma (PACG), and normal tension glaucoma (NTG) subjects in routine clinical care. Methods:All patients had ≥5 VF tests using HFA, 24-2, SITA-standard strategy. We compared the progression between glaucoma ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.18-25421
更新日期：2019-03-01 00:00:00
abstract：Purpose:Rapid identification of pathogens causing endophthalmitis may improve treatment outcomes through early administration of species-specific medication. The current study reports a new molecular application of peptide nucleic acid-fluorescence in situ hybridization (PNA-FISH) with Staphylococcus-specific molecular...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.17-21535
更新日期：2017-08-01 00:00:00
abstract：PURPOSE:To compare three microkeratome-assisted techniques for the preparation of ultrathin (UT) grafts for Descemet stripping automated endothelial keratoplasty. METHODS:After dissection with a 300-μm microkeratome head in 40 donor tissues, a second cut was performed with a 130-μm head either after manual stromal hyd...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.11-7753
更新日期：2012-01-31 00:00:00
abstract：Purpose:To investigate whether rapamycin protects tear production and the ocular surface during endoplasmic reticulum (ER) stress-induced dry eye syndrome in mice. Methods:Tunicamycin was injected intraperitoneally in BALB/c mice without or with rapamycin (TM or RM5 group). Peritoneal injection of PBS performed in veh...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.18-25583
更新日期：2019-03-01 00:00:00
abstract：:We have examined the presence and distribution of integrin and fibronectin in the retinas of 21-day chick embryos and adult rats, with particular emphasis on the question of localization in the retinal pigment epithelium (RPE). Isolated sheets of RPE solubilized and separated by gel electrophoresis contain integrin, a...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1987-08-01 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:Transforming growth factor beta-1 (TGF beta-1) can modulate inflammation. Endotoxin-induced uveitis (EIU) is characterized by acute ocular inflammation related to the release of cytokines, including interleukin (IL)-6. The authors investigated the effect of TGF beta-1 on EIU in mice. METHODS:Three independent ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：PURPOSE:We estimated coefficients of repeatability for Spectralis optical coherence tomography (OCT)-derived automated retinal thickness and volume measurements in subjects with center-involving diabetic macular edema (DME). METHODS:A total of 50 eyes of 50 consecutive patients with center-involving DME underwent four...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10895
更新日期：2012-11-21 00:00:00
abstract：:Exposure of denuded rabbit corneal stromal carriers for 24 hr at 37 degrees C to suspensions of rabbit corneal epithelial cells grown in tissue culture resulted in the establishment of a cell layer on the carriers. The cell layers persisted for at least 1 week of incubation and were one to three cells thick. They cons...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1982-07-01 00:00:00
