Do Intense Perimetric Stimuli Saturate the Healthy Visual System?

Abstract:

Purpose:A recent proposal for why glaucomatous perimetric sensitivities of approximately 15 to 19 dB or less are unreliable involves the idea that the neural response of normal retinal ganglion cells saturates for intense perimetric stimuli. A predicted consequence of this saturation is that the neural response for two different high intensity stimuli will be the same, leading to an inability to discriminate between them. We test that prediction. Methods:We used a two-interval forced-choice method of constant stimuli (7 steps, 40 presentations/step) to measure the ability of four healthy observers to discriminate between different intensity Size III perimetric stimuli at 0°, 9°, and 21° eccentricity. The lower intensity stimulus for each discrimination was either 27, 23, 19, 15, or 11 dB (Humphrey Field Analyzer equivalents). Results:Foveally, discrimination performance exceeded 90% for all observers provided the more intense stimulus was made sufficiently intense, even if the lower intensity stimulus in the pair was itself already intense (≤19 dB). The shapes of the curves were similar across all lower intensity stimulus values investigated. At 21°, discrimination performance exceeded 90% in three of the four observers despite the lower intensity stimulus being 19 dB. Conclusions:Observers can reliably discriminate between two different, but both very intense, perimetric stimuli, indicating that responses of the human visual system are not saturated by such stimuli. Therefore, the cause of high perimetric test-retest variability is not readily predicted from our current knowledge of how normal ganglion cells respond to high intensity stimuli.

authors

Anderson AJ,McKendrick AM,Turpin A

doi

10.1167/iovs.16-20004

subject

Has Abstract

pub_date

2016-11-01 00:00:00

pages

6397-6404

issue

14

eissn

0146-0404

issn

1552-5783

pii

2588566

journal_volume

57

pub_type

杂志文章
  • Repeatability of Spectralis OCT measurements of macular thickness and volume in diabetic macular edema.

    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

    authors: Comyn O,Heng LZ,Ikeji F,Bibi K,Hykin PG,Bainbridge JW,Patel PJ

    更新日期:2012-11-21 00:00:00

  • Photodynamic therapy using Lu-Tex induces apoptosis in vitro, and its effect is potentiated by angiostatin in retinal capillary endothelial cells.

    abstract:PURPOSE:To examine the effect of combining angiostatin with photodynamic therapy (PDT) using Lutetium Texaphyrin (Lu-Tex; Alcon, Fort Worth, TX) as a photosensitizer in bovine retinal capillary endothelial (BRCE) and retinal pigment epithelial (RPE) cells and to determine the mode of PDT-induced cell death in these cel...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Renno RZ,Delori FC,Holzer RA,Gragoudas ES,Miller JW

    更新日期:2000-11-01 00:00:00

  • Noninvasive measurements of pyridine nucleotide fluorescence from the cornea.

    abstract::The autofluorescence of reduced pyridine nucleotides (NADH and NADPH) and oxidized flavoproteins within the rabbit cornea were noninvasively measured as a function of depth. This was accomplished by combining a corneal specular microscope with a time-shared spectrofluorometer. When either 8 mM sodium pentobarbital or ...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Laing RA,Fischbarg J,Chance B

    更新日期:1980-01-01 00:00:00

  • Retinal ischemia/reperfusion injury is mediated by Toll-like receptor 4 activation of NLRP3 inflammasomes.

    abstract:PURPOSE:Retinal ischemia/reperfusion (IR) is common in eye disorders. Pattern-recognition receptors (PRRs) are reported to initiate sterile inflammatory response. The role of PRRs in retinal IR injury is currently unknown. Thus, we investigated the expression and function of membrane and cytoplasmic PRRs during retinal...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.14-14380

    authors: Qi Y,Zhao M,Bai Y,Huang L,Yu W,Bian Z,Zhao M,Li X

    更新日期:2014-08-05 00:00:00

  • Interphotoreceptor Retinoid-Binding Protein Mitigates Cellular Oxidative Stress and Mitochondrial Dysfunction Induced by All-trans-Retinal.

    abstract:PURPOSE:Point and null mutations in interphotoreceptor retinoid-binding protein (IRBP) cause retinal dystrophy in affected patients and IRBP-deficient mice with unknown mechanism. This study investigated whether IRBP protects cells from damages induced by all-trans-retinal (atRAL), which was increased in the Irbp(-/-) ...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.15-18551

    authors: Lee M,Li S,Sato K,Jin M

    更新日期:2016-04-01 00:00:00

  • Sphere formation and expression of neural proteins by human corneal stromal cells in vitro.

    abstract:PURPOSE:To demonstrate the presence of corneal stromal precursors that express neural markers in vitro. METHODS:To isolate sphere-forming cells, human corneal stromal cells were subjected to a reaggregation-free neurosphere assay in medium containing methylcellulose gel matrix. To promote differentiation, the isolated...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.04-0288

    authors: Uchida S,Yokoo S,Yanagi Y,Usui T,Yokota C,Mimura T,Araie M,Yamagami S,Amano S

    更新日期:2005-05-01 00:00:00

  • A CX3CR1 genotype associated with retinal vasculitis in patients in the United Kingdom.

    abstract:PURPOSE:To investigate whether polymorphisms in the gene encoding the chemokine receptor CX3CR1, which has been linked to changes in functional ligand-binding activity, are associated with retinal vasculitis (RV) in a cohort of patients in the United Kingdom. METHODS:DNA was prepared from whole blood of 126 patients w...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.05-1631

    authors: Wallace GR,Vaughan RW,Kondeatis E,Mathew R,Chen Y,Graham EM,Stanford MR

    更新日期:2006-07-01 00:00:00

  • Substratum compliance regulates human trabecular meshwork cell behaviors and response to latrunculin B.

    abstract:PURPOSE:To determine the impact of substratum compliance and latrunculin-B (Lat-B), both alone and together, on fundamental human trabecular meshwork (HTM) cell behavior. Lat-B is a reversible actin cytoskeleton disruptor that decreases resistance to aqueous humor outflow and decreases intraocular pressure. METHODS:HT...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.11-7857

    authors: Wood JA,McKee CT,Thomasy SM,Fischer ME,Shah NM,Murphy CJ,Russell P

    更新日期:2011-12-02 00:00:00

  • A fungal pH-responsive signaling pathway regulating Aspergillus adaptation and invasion into the cornea.

    abstract:PURPOSE:To investigate the role of PalB and PacC, two components of a pH-responsive signal-transduction pathway of Aspergillus nidulans, during the pathogenesis of fungal infection of the cornea. METHODS:Fungal strains included an A. nidulans wild-type isolate (A83), loss-of-function A. nidulans mutants of the palB (B...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.09-4348

    authors: Hua X,Yuan X,Wilhelmus KR

    更新日期:2010-03-01 00:00:00

  • The association between time spent outdoors and myopia using a novel biomarker of outdoor light exposure.

    abstract:PURPOSE:We sought to determine whether conjunctival ultraviolet autofluorescence (UVAF), a biomarker of outdoor light exposure, is associated with myopia. METHODS:We performed a cross-sectional study on Norfolk Island and recruited individuals aged ≥ 15 years. Participants completed a sun-exposure questionnaire and un...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.11-8677

    authors: Sherwin JC,Hewitt AW,Coroneo MT,Kearns LS,Griffiths LR,Mackey DA

    更新日期:2012-07-01 00:00:00

  • Retarding photoreceptor degeneration in Pdegtm1/Pdegtml mice by an apoptosis suppressor gene.

    abstract:PURPOSE:Mice (Pdegtm1/Pdegtm1) homozygous for a mutant allele of the gamma subunit of retinal cyclic guanosine monophosphate phosphodiesterase (PDE gamma) suffer a severe photoreceptor degeneration. To determine whether the antiapoptotic BCL2 gene is effective in delaying the cell death pathway in this new strain of mu...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Tsang SH,Chen J,Kjeldbye H,Li WS,Simon MI,Gouras P,Goff SP

    更新日期:1997-04-01 00:00:00

  • Effects of age and rapid high-pressure fixation on the morphology of Schlemm's canal.

    abstract::An analysis of size, shape, vacuole and cell counts of Schlemm's canal was undertaken in 20 human eyes that had undergone conventional immersion fixation. A reduction in vacuole count with age was shown to be associated with a decreased canal cell count. The decrease in cell count with age was closely linked to an age...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Ainsworth JR,Lee WR

    更新日期:1990-04-01 00:00:00

  • Association between ocular dominance and spherical/astigmatic anisometropia, age, and sex: analysis of 10,264 myopic individuals.

    abstract:PURPOSE:To determine the association between ocular dominance and spherical or astigmatic anisometropia, age, and sex. METHODS:Medical records of 10,264 myopic refractive surgery candidates were filtered. Ocular dominance was assessed with the hole-in-the-card test. Manifest refractive error was measured in each subje...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.11-8131

    authors: Linke SJ,Baviera J,Munzer G,Steinberg J,Richard G,Katz T

    更新日期:2011-11-25 00:00:00

  • Head shaking and vestibulo-ocular reflex in congenital nystagmus.

    abstract::The authors investigated the mechanisms underlying the head shaking shown by some patients with congenital nystagmus (CN). In order to improve visual function by head shaking, a patient with CN must have some visual acuity loss due to retinal image motion created by the nystagmus; an abnormal vestibulo-ocular reflex (...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Carl JR,Optican LM,Chu FC,Zee DS

    更新日期:1985-08-01 00:00:00

  • Transient Intraocular Pressure Fluctuations: Source, Magnitude, Frequency, and Associated Mechanical Energy.

    abstract:Purpose:To characterize intraocular pressure (IOP) dynamics by identifying the sources of transient IOP fluctuations and quantifying the frequency, magnitude, associated cumulative IOP-related mechanical energy, and temporal distribution. Methods:IOP was monitored at 500 Hz for periods of 16 to 451 days in nine normal...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.19-26600

    authors: Turner DC,Edmiston AM,Zohner YE,Byrne KJ,Seigfreid WP,Girkin CA,Morris JS,Downs JC

    更新日期:2019-06-03 00:00:00

  • Changes in human meibum lipid composition with age using nuclear magnetic resonance spectroscopy.

    abstract:PURPOSE:Human tear film stability decreases with increasing age. In this study, the changes in meibum composition were measured in search of markers of tear film instability. METHODS:(1)H NMR nuclear magnetic resonance (NMR) spectra of 43 normal donors aged 1 to 88 years were acquired. RESULTS:Compared with meibum fr...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.11-8341

    authors: Borchman D,Foulks GN,Yappert MC,Milliner SE

    更新日期:2012-01-31 00:00:00

  • Vascular Adhesion Protein-1 Blockade Suppresses Ocular Inflammation After Retinal Laser Photocoagulation in Mice.

    abstract:Purpose:To investigate the effect of the vascular adhesion protein-1 (VAP-1) inhibitor RTU-1096 on retinal morphologic changes and ocular inflammation after retinal laser photocoagulation in mice. Methods:C57BL/6JJcl mice were fed a diet containing RTU-1096, a specific inhibitor for VAP-1, or a control diet ad libitum...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.17-21555

    authors: Matsuda T,Noda K,Murata M,Kawasaki A,Kanda A,Mashima Y,Ishida S

    更新日期:2017-06-01 00:00:00

  • Anterior polar cataracts in CS rats: a predictor of mature cataract formation.

    abstract:PURPOSE:The objective of this study was to characterize the morphology of the anterior opacities formed during recovery from posterior subcapsular cataract (PSC) in Royal College of Surgeons (RCS) rats. METHODS:Lenses from RCS rats at 8 and 12 weeks postnatal (n = 14 and 12, respectively) were examined under a dissect...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Al-Ghoul KJ,Kuszak JR

    更新日期:1999-03-01 00:00:00

  • Exogenous brain-derived neurotrophic factor (BDNF) reverts phenotypic changes in the retinas of transgenic mice lacking the BDNF gene.

    abstract:PURPOSE:The authors investigated the effect of brain-derived neurotrophic factor (BDNF) administration on the expression of Ca(2+)-binding proteins in the developing bdnf(-/-) mouse retina. METHODS:Intraocular injections of BDNF (0.5 microg) were applied on postnatal day (P) 11 bdnf(-/-) mice, and their effects were e...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.08-2244

    authors: Arango-González B,Cellerino A,Kohler K

    更新日期:2009-03-01 00:00:00

  • Identification of novel RPGR ORF15 mutations in X-linked progressive cone-rod dystrophy (XLCORD) families.

    abstract:PURPOSE:To test the incidence of mutations in RPGR ORF15 in six families with X-linked progressive retinal degeneration (cone-rod dystrophy [XLCORD], macular or cone dystrophy) and to undertake a detailed phenotypic assessment of families in whom ORF15 mutations were identified. METHODS:To amplify and sequence ORF15 i...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.04-1482

    authors: Ebenezer ND,Michaelides M,Jenkins SA,Audo I,Webster AR,Cheetham ME,Stockman A,Maher ER,Ainsworth JR,Yates JR,Bradshaw K,Holder GE,Moore AT,Hardcastle AJ

    更新日期:2005-06-01 00:00:00

  • The Stiles-Crawford effect in retinitis pigmentosa.

    abstract::Stiles-Crawford functions were obtained from the maculas of 22 patients with different genetic types of retinitis pigmentosa and visual acuity of 20/40 or better. Reduced cone directional sensitivity was seen in the fovea with both focal cone electroretinographic testing and psychophysical testing. Functions from the ...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Birch DG,Sandberg MA,Berson EL

    更新日期:1982-02-01 00:00:00

  • Voluntary Exercise Suppresses Choroidal Neovascularization in Mice.

    abstract:Purpose:To determine the effect of voluntary exercise on choroidal neovascularization (CNV) in mice. Methods:Age-matched wild-type C57BL/6J mice were housed in cages equipped with or without running wheels. After four weeks of voluntary running or sedentariness, mice were subjected to laser injury to induce CNV. After...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.61.5.52

    authors: Makin RD,Argyle D,Hirahara S,Nagasaka Y,Zhang M,Yan Z,Kerur N,Ambati J,Gelfand BD

    更新日期:2020-05-11 00:00:00

  • ON-Type Retinal Ganglion Cells are Preferentially Affected in STZ-Induced Diabetic Mice.

    abstract:Purpose:We investigate morphologic and physiologic alterations of ganglion cells (GCs) in a streptozocin (STZ)-induced diabetic mouse model. Methods:Experiments were conducted in flat-mount retinas of mice 3 months after the induction of diabetes. Changes in morphology of four subtypes of GCs (ON-type RGA2 [ON-RGA2], ...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.18-26359

    authors: Cui RZ,Wang L,Qiao SN,Wang YC,Wang X,Yuan F,Weng SJ,Yang XL,Zhong YM

    更新日期:2019-04-01 00:00:00

  • Detection and subcellular localization of two 15S-lipoxygenases in human cornea.

    abstract:PURPOSE:There are two human 15-lipoxygenases (LOX), 15-LOX-1 and -2, which convert arachidonic acid to 15S-hydroxyeicosatetraenoic acid (15S-HETE). The presence of both 15-LOXs in the human cornea prompted this study to delineate their roles in the human corneal epithelium. METHODS:Human corneal epithelia from donor c...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.04-1166

    authors: Chang MS,Schneider C,Roberts RL,Shappell SB,Haselton FR,Boeglin WE,Brash AR

    更新日期:2005-03-01 00:00:00

  • Three-dimensional reconstruction of extravascular matrix patterns and blood vessels in human uveal melanoma tissue: techniques and preliminary findings.

    abstract:PURPOSE:Looping patterns rich in laminin are present in tissue samples of primary aggressive human uveal melanomas and their metastases. Because these extravascular patterns connect to blood vessels and transmit fluid in vitro and in vivo, the three-dimensional configuration of these patterns has been the subject of co...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.02-1333

    authors: Chen X,Ai Z,Rasmussen M,Bajcsy P,Auvil L,Welge M,Leach L,Vangveeravong S,Maniotis AJ,Folberg R

    更新日期:2003-07-01 00:00:00

  • How reliable are tests for trachoma?--a latent class approach.

    abstract:PURPOSE:Tests for ocular Chlamydia trachomatis have not been well characterized, because there is no gold standard test. Latent class analysis (LCA) was performed to estimate the sensitivity and specificity of laboratory and clinical tests for trachoma in the absence of a gold standard. METHODS:Individual data from pr...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章,随机对照试验

    doi:10.1167/iovs.11-7419

    authors: See CW,Alemayehu W,Melese M,Zhou Z,Porco TC,Shiboski S,Gaynor BD,Eng J,Keenan JD,Lietman TM

    更新日期:2011-08-03 00:00:00

  • Expression of CD40 and CD40 ligand in the human conjunctival epithelium.

    abstract:PURPOSE:CD40 antigen is a membrane receptor that plays a role in the regulation of immune reactions. The expressions of CD40 and CD40 ligand (CD40L) were investigated ex vivo and in vitro in conjunctival epithelial cells, in correlation with HLA DR class H antigen, previously shown to be upregulated in conjunctival inf...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Bourcier T,De Saint-Jean M,Brignole F,Goguel A,Baudouin C

    更新日期:2000-01-01 00:00:00

  • Human Conjunctival Epithelial Sheets Grown on Poly(Lactic-Co-Glycolic) Acid Membranes and Cocultured With Human Tenon's Fibroblasts for Corneal Repair.

    abstract:Purpose:We determine the feasibility of human conjunctival epithelial cells (hCjECs) on poly(lactic-co-glycolic) acid (PLGA) membranes for corneal epithelium regeneration. hCjECs on PLGA or polyester (PET) membranes with or without coculture of human Tenon's fibroblasts (hTFs) were compared in vitro, and to determine w...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.17-22719

    authors: Hong S,Yun JH,Kim ES,Kim JS,Tchah H,Hwang C

    更新日期:2018-03-01 00:00:00

  • Autoregulation of blood flow in the capillaries of the human macula.

    abstract::The entoptic phenomenon by which one can observe leukocytes flowing in one's own parafoveal capillaries has been used to study the effect of changes in perfusion pressure on blood flow. Our measurements in humans with normal ocular fundi indicate that the retinal circulation of the parafovea is autoregulated in relati...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:

    authors: Riva CE,Loebl M

    更新日期:1977-06-01 00:00:00

  • Prostanoid EP4 receptor stimulation produces ocular hypotension by a mechanism that does not appear to involve uveoscleral outflow.

    abstract:PURPOSE:As part of a systematic elucidation of the pharmacology of prostaglandin's (PG) effects on intraocular pressure in the monkey, the prototypical selective prostanoid EP(4) receptor agonist (3,7-dithia PGE(1)) was examined. It was found to be highly efficacious in nonhuman primates, and its mechanism of ocular hy...

    journal_title:Investigative ophthalmology & visual science

    pub_type: 杂志文章

    doi:10.1167/iovs.08-3031

    authors: Woodward DF,Nilsson SF,Toris CB,Kharlamb AB,Nieves AL,Krauss AH

    更新日期:2009-07-01 00:00:00