Abstract：
PURPOSE:To ablate retina and vitreous membranes using the 193-nm argon fluoride excimer laser in a fluid medium. METHODS:A special delivery system for the 193-nm excimer laser was developed that enabled the delivery of the laser into high-absorption liquid environments. The system was tested on the retina in an in vitro cup preparation of cow's eyes, and also in vivo on retina and vitreous membranes of rabbit eyes. The depth of cut as a function of laser energy was determined for an ablating needle with a 0.25-mm exit diameter. RESULTS:Gentle cutting of retinal tissue and of vitreous membranes was obtained in an energy range of 0.075 to 0.25 mJ/pulse. At the energy level of 0.075 mJ/pulse, four pulses were required for full-depth cut formation in rabbit retina, whereas at energy levels greater than 0.17 mJ/pulse, one pulse was sufficient for full-depth cut formation. The maximal rate of cutting achieved for the bovine retina was 2 mm/sec at a 20-Hz repetition rate of the laser. Ablation occurred only when the tip was held in contact with the tissue. CONCLUSIONS:The technology described herein appears to be advantageous and applicable to a variety of vitreoretinal surgical procedures.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Palanker D,Hemo I,Turovets I,Zauberman H,Fish G,Lewis Asubject
Has Abstractpub_date
1994-10-01 00:00:00pages
3835-40issue
11eissn
0146-0404issn
1552-5783journal_volume
35pub_type
杂志文章abstract：Purpose:To evaluate choroidal structural changes in eyes with myopic choroidal neovascularization (mCNV) treated with anti-VEGF over 12 months. Methods:We prospectively evaluated subfoveal choroidal thickness (SFCT) and choroidal vascularity index (CVI) using spectral-domain optical coherence tomography (SD-OCT) at ba...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.16-20191
更新日期：2016-09-01 00:00:00
abstract：PURPOSE:To investigate thickness profile changes of the corneal epithelium and Bowman's layer at the vertical and horizontal meridians with overnight myopia orthokeratology (OK) lenses. METHODS:Twenty subjects (age range: 19-33 years) wore reverse-geometry rigid gas-permeable OK lenses in both eyes for 30 days. Before...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.12-10263
更新日期：2013-01-23 00:00:00
abstract：:The color matches of 46 retinitis pigmentosa (RP) patients were found to differ significantly from those of 55 unaffected observers. The color matches of group I (trichromatic) RP observers were more protanomalous (i.e., required a greater red/green mixture ratio) than those of unaffected observers. The matches of gro...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1980-08-01 00:00:00
abstract：PURPOSE:The purpose of this study was to identify target antigens of autoimmune keratitis with a disease-prone mouse model. METHODS:BALB/c nude mice grafted with embryonic rat thymi (TG nude mice) develop various organ-localized autoimmune lesions, including keratitis. A hybridoma producing a monoclonal antibody (OT-2...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.05-0774
更新日期：2006-01-01 00:00:00
abstract：PURPOSE:Elevated intraocular pressure (IOP), sensed as mechanical stretching by trabecular meshwork (TM) cells, triggers extracellular matrix (ECM) remodeling. In addition to changes in gene expression, alternative mRNA splicing may alter ECM protein isoforms. Changes in mRNA expression and alternative splicing of four...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.06-0875
更新日期：2007-03-01 00:00:00
abstract：PURPOSE:To determine whether intraocular pressure (IOP) elevation alters OPA1 expression and triggers OPA1 release, as well as whether the uncompetitive N-methyl-d-aspartate (NMDA) glutamate receptor antagonist memantine blocks OPA1 release and subsequent apoptotic cell death in glaucomatous DBA/2J mouse retina. METHO...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.08-2499
更新日期：2009-02-01 00:00:00
abstract：PURPOSE:Visual sensations in patients with blindness and retinal degenerations may be restored by electrical stimulation of retinal neurons with implantable microelectrode arrays. A prospective trial was initiated to evaluate the safety and efficacy of a wireless intraocular retinal implant (EPIRET3) in six volunteers ...
journal_title：Investigative ophthalmology & visual science
pub_type： 临床试验,杂志文章
doi：10.1167/iovs.08-2752
更新日期：2009-06-01 00:00:00
abstract：PURPOSE:To evaluate whether β-zone parapapillary atrophy (PPA) is associated with the rate of retinal nerve fiber layer (RNFL) thickness change as assessed by trend-based analysis using time-domain optical coherence tomography (OCT). METHODS:This retrospective cohort study included 202 glaucomatous eyes that were obse...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6818
更新日期：2011-06-22 00:00:00
abstract：PURPOSE:This study was designed to examine whether retinal function can be rescued by allogeneic normal retinal pigment epithelial (RPE) grafts in Royal College of Surgeons (RCS) with retinal degeneration and, if so, whether this rescued function can be measured and followed by recording the corneal electroretinogram (...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1994-12-01 00:00:00
abstract：PURPOSE:This study was conducted to investigate metabolic changes in aqueous humor from rabbit eyes exposed to either UV-A or -B radiation, by using (1)H nuclear magnetic resonance (NMR) spectroscopy and unsupervised pattern recognition METHODS:methods. Both eyes of adult albino rabbits were irradiated with UV-A (366 ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.04-0787
更新日期：2005-03-01 00:00:00
abstract：PURPOSE:Oxidative stress and metabolic dysregulation of the RPE have been implicated in AMD; however, the molecular regulation of RPE metabolism remains unclear. The transcriptional coactivator, peroxisome proliferator-activated receptor-gamma coactivator 1α (PGC-1α) is a powerful mediator of mitochondrial function. Th...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-17758
更新日期：2016-03-01 00:00:00
abstract：PURPOSE:Genetic modification of cells before transplantation may allow the delivery of neuroprotective and other functional molecules to patients with neurodegenerative diseases. To avoid complications associated with virally transfected cells, we have explored the use of nonviral methods to insert genetic material int...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-6178
更新日期：2011-07-23 00:00:00
abstract：:The morphologic effects on rabbit corneal endothelium of several common ophthalmic vehicle constituents were examined following subconjunctival administration. Profound dose-dependent changes consisting of intercellular vacuolization and thickening of the endothelial layer were noted within 1 day following administrat...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1986-04-01 00:00:00
abstract：:The retinae of a monkey, cat, rat and mouse were examined for FMRF-amide immunoreactivity, a marker for efferent fibers in the retinae of lower vertebrates. No FMRF-amide immunoreactive retinal fibers were found despite their presence in the rat CNS. Therefore, we conclude that efferent fibers, if present in mammalian...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1989-05-01 00:00:00
abstract：PURPOSE:Amino-amide or amino-ester local anesthetics, which are currently used for topical ocular anesthesia, are short acting and may delay corneal healing with long-term use. In contrast, site 1 sodium channel blockers (S1SCBs) are potent local anesthetics with minimal adverse tissue reaction. In this study, we exami...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.15-16591
更新日期：2015-06-01 00:00:00
abstract：Purpose:To determine age-related alterations in the retinal tissue perfusion (RTP) and volumetric vessel density (VVD) in healthy subjects. Methods:Total 148 healthy subjects (age 18 to 83 years) were enrolled and divided into four groups (G1, <35 years; G2, 35 ∼ 49 years; G3, 50 ∼ 64 years; and G4, ≥65 years). The RT...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.18-25864
更新日期：2019-02-01 00:00:00
abstract：:Gamma-interferon (G-IFN) exhibits antiproliferative effects, inhibits collagen synthesis by fibroblasts, and may help to regulate the turnover of fibrous tissue. Fibroblasts from Tenon's capsule are cellular components that contribute to unsuccessful glaucoma filtration surgery. Therefore, the authors studied the effe...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1991-09-01 00:00:00
abstract：:To investigate the accumulation of tear proteins on disposable extended-wear contact lenses (42% Etafilcon A and 58% hydration), a technique involving sodium dodecyl sulfate-polyacrylamide minigel electrophoresis combined with a sensitive silver-staining method was used. Besides the binding of large amounts of tear ly...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1990-11-01 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：PURPOSE:To determine whether the native basement membrane left behind after manual débridement wounding is retained throughout healing in the Balb/c mouse. METHODS:Mouse corneas were subjected to either 1.5 mm (small) or limbus-to-limbus (large) epithelial débridement wounds and allowed to heal for times ranging from ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2000-04-01 00:00:00
abstract：:The level of oxygen at the anterior corneal surface beneath the closed eyelid is shown to be equivalent to an atmosphere of 7.7% oxygen. This finding is in good agreement with assumptions which have been based on the oxygen level at the palpebral conjunctiva. However, in some instances a significant amount of oxygen i...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1979-01-01 00:00:00
abstract：:The authors' study of the viscosities of various concentrations of sodium hyaluronate, chondroitin sulfate, and methylcellulose revealed that sodium hyaluronate and methylcellulose are pseudoplastic fluids in contrast to chondroitin sulfate, which is a Newtonian fluid. Pseudoplastic fluids are ideal for maintaining th...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：PURPOSE:To compare the magnification properties of four different indirect double aspheric fundus examination lenses for clinical disc biometry. METHODS:Experimental study in a model eye. The relationship between the true size of a fundus object and its image was calculated for each fundus lens for an ametropic range ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：PURPOSE:To determine if lens epithelial lines can be established from cryopreserved whole rabbit lenses and from cryopreserved capsule-epithelial preparations (CEPs). METHODS:Lenses or freshly isolated CEPs were cryopreserved and subsequently thawed. Thawed whole lenses were cultured for 48 hours in growth medium and ...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1995-02-01 00:00:00
abstract：:The peroxidase-antiperoxidase method was used to study ten surgically obtained human optic nerve gliomas (pilocytic astrocytomas). All tissues were formalin fixed and paraffin embedded. Primary antisera included glial fibrillary acidic protein (GFAP), HNK-1 (type 1 astrocyte precursor marker), A2B5 (type 2 astrocyte p...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1991-08-01 00:00:00
abstract：PURPOSE:Many retinal imaging instruments use infrared wavelengths to reduce the risk of light damage. However, we have discovered that exposure to infrared illumination causes a long-lasting reduction in infrared autofluorescence (IRAF). We have characterized the dependence of this effect on radiant exposure and invest...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.13-12562
更新日期：2014-05-20 00:00:00
abstract：PURPOSE:This study explores the order of assembly of the lens fiber cell plasma membrane. Because the lens must synthesize most of its membrane components, our approach was to map directly the spatial distribution of cholesterol, fatty acid (reflecting phospholipid), and the main intrinsic protein, MP26, synthesis in t...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：
更新日期：1993-06-01 00:00:00
abstract：Purpose:This study is to investigate the corneal anomaly caused by excess transforming growth factor-α (TGF-α) during mouse development. Methods:Bitransgenic KeraRT/TGF-α mice, generated via cross-mating tetO-TGF-α and KeraRT mice, were induced to overexpress TGF-α by doxycycline commencing at embryonic day 0 or postn...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.61.8.20
更新日期：2020-07-01 00:00:00
abstract：PURPOSE:Strabismus is a common eye disorder with a prevalence of 1% to 4%. Comitant strabismus accounts for approximately 75% of all strabismus, yet more is known about the less common incomitant disorders. Comitant strabismus is at least partly inherited, but only one recessive genetic susceptibility locus, on chromos...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.07-1631
更新日期：2009-07-01 00:00:00
abstract：PURPOSE:We evaluated the roles of tumor necrosis factor (TNF)-α in alkali-induced corneal neovascularization (CNV). METHODS:CNV was induced by alkali injury and compared in wild-type (WT) BALB/c mice, and TNF receptor 1-deficient (TNF-Rp55 KO) counterparts, or in mice treated with TNF-α antagonist and recombinant TNF-...
journal_title：Investigative ophthalmology & visual science
pub_type： 杂志文章
doi：10.1167/iovs.10-5548
更新日期：2012-06-14 00:00:00
