Abstract:
Purpose::This study aimed to explore the effects of the Valsalva maneuver (VM) on ectatic corneas during anterior segment tomography scans using a Scheimpflug camera. Methods::This prospective observational study included 100 eyes of 50 patients with bilateral keratoconus (KC). Anterior segment tomography was first performed when the patients were in a resting position and immediately repeated as the participant performed VM. Scheimpflug images were taken using a Pentacam®. Results::The mean age of the participants was 24.14 ± 6.59 years. Of the 100 eyes included in the study, 7% had stage 1 KC, 47% had stage 2 KC, 32% had stage 3 KC, and 14% had stage 4 KC. The indices of KC were not significantly affected by VM. Similarly, no statistically significant differences were found between the stages of KC, or with the mean pachymetric progression index during VM. Pupil diameter showed a statistically significant increase during VM (p=0.017). There was a statistically significant decrease in the anterior chamber angle measurement during VM (p=0.001). Maximum curvature power in the front of the cornea decreased more during VM in stage 4 KC than for the other stages (p=0.014). Conclusions::No changes associated with VM were found in the KC indices or the stage of the disease. However, an increase in pupil diameter and a decrease in anterior chamber angle value were found. These changes were comparable to values obtained from previous studies performed on normal corneas.
journal_name
Arq Bras Oftalmoljournal_title
Arquivos brasileiros de oftalmologiaauthors
Koçluk Y,Sukgen EA,Cevher Sdoi
10.5935/0004-2749.20160103subject
Has Abstractpub_date
2016-11-01 00:00:00pages
363-365issue
6eissn
0004-2749issn
1678-2925pii
S0004-27492016000600363journal_volume
79pub_type
杂志文章abstract:PURPOSE:To describe an outbreak of Pseudomonas aeruginosa endophthalmitis post cataract surgery. Clinical findings, treatment and outcome are discussed. METHODS:Clinical charts review of forty-five patients treated for endophthalmitis in a two-day period. The patients underwent primary vitrectomy, anterior chamber irr...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492012000500010
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVE:Investigate the average blinking time in conversation and in Video Display Terminal use of young adults and adults in the presbyopic age group. METHODS:A transversal analytical study in a readily accessible sample consisting of Volkswagen do Brasil - Curitiba, Paraná employees was performed. The cohort group...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492009000500017
更新日期:2009-09-01 00:00:00
abstract:PURPOSE:To assess the intraocular pressure (IOP) and ocular rigidity (E) at 1, 3, 6 and 24 postoperative months in eyes that underwent LASIK. METHODS:The IOP measured by Goldmann applanation tonometer (GAT) and by the 5.5 and 10 gm. weights of a standardized Schioetz tonometer (ST) and the E measured by differential t...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492009000400003
更新日期:2009-07-01 00:00:00
abstract:PURPOSE:To evaluate changes in corneal sensitivity following corneal cross-linking (CXL) in patients with progressive earlier stage keratoconus. METHODS:Thirty-eight eyes of 19 patients (11 women, 8 men) were included in a prospective, nonrandomized clinical study. The mean patient age was 22 years (range, 18-26 years...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 临床试验,杂志文章
doi:10.5935/0004-2749.20140021
更新日期:2014-04-01 00:00:00
abstract:PURPOSE:To assess the ability of spectral domain optical coherence tomography (SD-OCT) to diagnose macular changes pre- and post-cataract surgery and to identify changes in central foveal thickness (CFT) relative to age, sex, and presence of concomitant ophthalmic pathologies, for a period of 6 months post-surgery. ME...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20150062
更新日期:2015-07-01 00:00:00
abstract::Metastatic tumors are the most common intraocular malignances and choroid is by far the most common site. Breast and lung cancer are the first cause in women and men respectively. We report the case of a 71-year old woman who had choroidal tumor in her left eye. Further image body scans demonstrated several lesions in...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492013000400014
更新日期:2013-07-01 00:00:00
abstract::Interferon is an immunomodulating cytokine used to treat patients with different diseases, such as hepatitis C chronic infection. Pegylated interferon is a new type of interferon, developed to increase the half-life of the drug. Many side effects have been related to its use, including ocular toxicity and retinopathy....
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492006000200022
更新日期:2006-03-01 00:00:00
abstract:PURPOSE:To evaluate the percentage of ophthalmologic patients who search for a second opinion and to verify the main reason for this search. METHODS:The methodology of the present study consists of a direct interview with 806 ophthalmologic patients, attended at a specialized hospital, through an adequately elaborated...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492005000300007
更新日期:2005-05-01 00:00:00
abstract:PURPOSE:To assess the in vitro susceptibility of conjunctival and corneal coagulase negative Staphylococcus (CoNS) to methicillin, fluoroquinolones and aminoglycosides. METHODS:A total of 707 conjunctival and corneal CoNS disk diffusion test results were retrospectively analyzed, from January 2000 through December 200...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492007000600007
更新日期:2007-11-01 00:00:00
abstract:PURPOSE:To measure, using the retinal thickness analyzer, the mean foveal thickness and the mean perifoveal thickness values on patients suffering from mild non-proliferative diabetic retinopathy without clinically detectable macular edema (classified by the ETDRS study), and compare them with healthy individuals. MET...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492009000400013
更新日期:2009-07-01 00:00:00
abstract::Permanent visual loss can be caused by improper use of immunosuppressive therapy in cases of uveitis without differential diagnosis of syphilitic uveitis. We present four cases of syphilitic uveitis that were incorrectly diagnosed as being secondary to rheumatic diseases and were subsequently treated with immunosuppre...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20150047
更新日期:2015-05-01 00:00:00
abstract:PURPOSE:To analyze the benefits after cataract surgery in professional activities. METHODS:A prospective, randomized study was conducted at the Clinical Hospital of the University of São Paulo. The patients had cataract surgery by phacoemulsification (PHACO) and by extracapsular extraction (EECP). RESULTS:The sample ...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章,随机对照试验
doi:10.1590/s0004-27492010000600003
更新日期:2010-11-01 00:00:00
abstract:PURPOSE:To evaluate sensibility and specificity of a screening questionnaire with multivariable analysis, compare them and elaborate an artificial neural network for future screenings. METHODS:Observational, transversal study performed at UNIFESP, with 48 patients with allergic conjunctivitis and 54 children without t...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492006000500017
更新日期:2006-09-01 00:00:00
abstract:PURPOSES:To evaluate the effects of nalbuphine 1% on the expression of metalloproteinase 1 (MMP-1), metalloproteinase 9 (MMP-9), and opioid growth factor (OGF) in rabbit corneas after lamellar keratectomy. METHODS:The rabbits were assigned to two groups: group nalbuphine (GN, n=30), which received 30 µL of nalbuphine ...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20150037
更新日期:2015-05-01 00:00:00
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journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492006000600014
更新日期:2006-11-01 00:00:00
abstract:PURPOSE:To study the deformation response of three distinct contact lenses with known structures, which served as corneal models, under different chamber pressures using ultra-high-speed (UHS) Scheimpflug imaging. METHODS:Three hydrophilic contact lenses were mounted on a sealed water chamber with precisely adjustable...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492013000500005
更新日期:2013-10-01 00:00:00
abstract:PURPOSE:To determine the most common approach to repair the anophthalmic socket in Brazil, and to compare the data with the trends in other countries. METHODS:Exploratory study using electronic questionnaire sent by Internet to ophthalmologists members of the Brazilian Orbit and Oculoplastic Society (SBCPO). The recei...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492012000600004
更新日期:2012-11-01 00:00:00
abstract::The practical advantages of quantifying an angle by a ratio of linear lengths instead of arcs of circles has led to the definition of the prism-diopter, a conventional unity for numbering prisms and measuring strabismic deviations. However, a major inconvenience of using prism-diopter unities to express angular measur...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20140070
更新日期:2014-10-01 00:00:00
abstract::We present a case in which a patient with intraorbital Langerhans' cell granuloma, with anatomical and functional skills compromised by intraorbital hypertension, which was treated with urgency orbitotomy by cranial approach. Male, two years-old, presented conjuntival proptosis, red eye, complete ophthalmoplegy, exoph...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492009000100018
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:To present the characteristics of individuals and the prevalence of ectropium eyelid in a random sample of the state of São Paulo, Brazil. METHODS:Data were collected during the Project on Prevention of Blindness, Faculty of Medicine of Botucatu - UNESP, a systematic random household sample was obtained. We ev...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:To evaluate the ophthalmic artery hemodynamics in patients with chronic heart failure. METHODS:Doppler parameters of ophthalmic artery of 18 patients with chronic heart failure in different stages of the disease were compared with 21 healthy volunteers (control group). These parameters were also correlated wit...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492011000500003
更新日期:2011-09-01 00:00:00
abstract::To report a case of ocular toxicity due to chloroquine. The best visual acuity was measured in both eyes with the Snellen chart. Slit-lamp examination of anterior segment, refraction, dilated fundus examination, fluorescein angiography and retinography was done in a 53-year-old patient, female, with rheumatoid arthrit...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492005000300027
更新日期:2005-05-01 00:00:00
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journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20160089
更新日期:2016-09-01 00:00:00
abstract:PURPOSE:To compare the postoperative results of phacotrabeculectomy with implantation of PMMA, foldable silicone or foldable hydrofobic acrylic intraocular lens (IOL). SETTING:Glaucoma unit, The Royal Liverpool University Hospital, Liverpool, United Kingdom. METHODS:We studied a total of 124 eyes of three consecutive...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492005000100006
更新日期:2005-01-01 00:00:00
abstract::A new model of orbital implant, matching the low cost of acrylic implants (PMMA) with the advantages of medpor (Porex) is presented herein. The new implant model consists of a PMMA implant with a dura mater scrap adhered on its anterior face of the same diameter of the acrylic implant and a medpor snip adhered on its ...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492010000100015
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:The purpose of this study was to identify, according to an systematic review, the best treatment for acute retinal necrosis. METHODS:Following the methodologic guidance of the Cochrane Collaboration and its editorial subgroup "Eye and Vision Group", using search strategy for study identification, articles abou...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章,评审
doi:10.1590/s0004-27492005000400009
更新日期:2005-07-01 00:00:00
abstract:PURPOSE:To assess the long-term refractive outcomes of photorefractive keratectomy in myopia and myopic astigmatism. METHODS:A retrospective study of 120 photorefractive keratectomy operated eyes with at least four-year follow-up (maximum of 96 months, mean follow-up 55 months). We divided patients into group 1 (G1) s...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492007000600017
更新日期:2007-11-01 00:00:00
abstract:PURPOSE:To evaluated the retinal nerve fiber layer in chloroquine patients with optical coherence tomography (OCT). METHODS:Nerve fibers layer thickness was measured by a proprietary OCT Stratus through the fast retinal nerve fiber layer protocol in ninety-four eyes of 48 patients exposed to chloroquine for at least o...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492010000100005
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:To evaluate corneal endothelium alterations after applying mitomycin C to the sclera using transmission and scanning electron microscopy, correlating alterations with time, concentration, and evaluation methods. METHODS:The corneal endothelium of both eyes of 32 albino rabbits was evaluated and distributed int...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.1590/s0004-27492009000200004
更新日期:2009-03-01 00:00:00
abstract:PURPOSE:To compare the aqueous humor (AH) concentrations of moxifloxacin 0.5% and gatifloxacin 0.3% solutions alone or when treatment was combined with steroids, and to correlate these concentrations with the minimum inhibitory concentrations (MIC) for the most common endophthalmitis-causing organisms. METHODS:Patient...
journal_title:Arquivos brasileiros de oftalmologia
pub_type: 杂志文章
doi:10.5935/0004-2749.20170073
更新日期:2017-09-01 00:00:00