Abstract:
PURPOSE:To investigate the effects of dehydration and fasting on retrobulbar-vessel blood velocity in healthy subjects. METHODS:Twenty-eight eyes of 28 normal subjects without ocular disease were enrolled in this study. Each subject had a baseline color-Doppler imaging ultrasound of the central retinal artery, temporal short posterior ciliary arteries, and ophthalmic artery after 14 hours of religious fasting and dehydration. The first measurements were performed in the fasting conditions. The mean blood flow velocities and resistive index were measured in each artery. One month after the fasting period, color-Doppler imaging measurements were performed in nonfasting conditions. Blood pressure, heart rate, and intraocular pressure were measured before color-Doppler imaging measurements in both the fasting and nonfasting conditions. RESULTS:Although systolic/diastolic blood pressure, heart rate, and intraocular pressure (111.78 +/- 8.18/76.42 +/- 5.75 mm Hg, 71.00 +/- 2.88 beats/min, and 12.71 +/- 2.25 mm Hg) were higher in nonfasting conditions (112.32 +/- 7.97/78.98 +/- 5.50 mm Hg, 70.71 +/- 2.77 beats/min, and 13.14 +/- 2.62 mm Hg, respectively), differences were not statistically significant. A statistically significant increase in peak systolic velocity in the ophthalmic artery, central retinal artery, and temporal short posterior ciliary artery was noted at the second measurements. A peak systolic velocity value of 48.90 +/- 14.66 cm/sec in the ophthalmic artery increased to 58.28 +/- 14.65 cm/sec in the nonfasting conditions ( < 0.05). A peak systolic velocity value of 16.88 +/- 4.30 cm/sec and an end diastolic velocity of 6.69 +/- 2.15 cm/sec in the central retinal artery increased to 24.24 +/- 6.45 cm/sec and 9.32 +/- 3.08 cm/sec, respectively, was recorded in the nonfasting and nondehydration condition ( < 0.05). Peak systolic velocity measurement of 23.42 +/- 6.19 cm/sec in temporal short posterior ciliary artery increased to 26.68 +/- 7.52 cm/sec at the second measurement ( < 0.05). The only significant change observed in the resistive index measurements was an increase in the ophthalmic artery resistive index in the nonfasting conditions ( < 0.05). CONCLUSIONS:Color-Doppler measurement may vary significantly in conditions of fasting and dehydration conditions compared with hydrated conditions. Therefore, the fasting and dehydration conditions should be considered when interpreting color-Doppler imaging results and comparing different groups of diseased or healthy subjects.
journal_name
J Glaucomajournal_title
Journal of glaucomaauthors
Inan UU,Yücel A,Ermis SS,Oztürk Fdoi
10.1097/00061198-200210000-00007keywords:
subject
Has Abstractpub_date
2002-10-01 00:00:00pages
411-5issue
5eissn
1057-0829issn
1536-481Xjournal_volume
11pub_type
杂志文章abstract:PRECIS:The VisuALL head-mounted perimetry in normal subjects and glaucoma patients had a moderate to strong correlation with the Humphrey Field Analyzer (HFA). PURPOSE:Visual field testing has a vital role in diagnosing and managing glaucoma. The current clinical practice relies on large, table-based testing units. Th...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000001670
更新日期:2021-01-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy of CO2 laser-assisted sclerectomy surgery (CLASS) in primary and pseudoexfoliative open-angle glaucoma. MATERIALS AND METHODS:Patients for primary filtration surgery underwent CLASS with a CO2 laser system (OT-134-IOPtiMate, IOPtima Ltd., Ramat Gan, Israel). This self-controlled system...
journal_title:Journal of glaucoma
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/IJG.0b013e3181f7b14f
更新日期:2012-03-01 00:00:00
abstract:PURPOSE:To investigate the amount of intraocular pressure (IOP) asymmetry in a large group of ethnically diverse patients with and without glaucoma, and to delineate the risk for glaucoma which increasing amounts of IOP asymmetry confer upon the patient. PATIENTS AND METHODS:Collaborative retrospective study of 326 gl...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e318237bfb8
更新日期:2013-03-01 00:00:00
abstract::Scanning laser ophthalmoscopy is capable of producing video fluorescein angiograms with high spatial and temporal resolution. Digital image analysis of these angiograms has been used to produce measures of capillary flow velocities in perimacular capillaries. We have recently utilized the same technique to measure flo...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
abstract:PURPOSE:To report a case of an angle-closure glaucoma in a patient with Miller Fisher syndrome (MFS) without pupillary dysfunction. METHODS:We present a case report of a 75-year-old male presenting with total ophthalmoplegia, complete bilateral ptosis, and gait disturbance. He was diagnosed with MFS without pupillary ...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000191
更新日期:2015-02-01 00:00:00
abstract:PURPOSE:The purpose of this study was to determine the proportion of patients in the US population who are receiving long-term intraocular pressure (IOP)-lowering medication, but, deny having a diagnosis of glaucoma or elevated IOP. MATERIALS AND METHODS:The National Health and Nutrition Examination Survey (NHANES) is...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000001035
更新日期:2018-11-01 00:00:00
abstract::Glaucoma secondary to penetrating keratoplasty can be challenging and multiple surgeries may be needed to control the intraocular pressure (IOP), including the use of glaucoma drainage implants. However, late failure of these drainage implant surgery is common, mostly because of excessive scarring or bleb encapsulatio...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000739
更新日期:2017-10-01 00:00:00
abstract:PURPOSE:To investigate risk factors associated with glaucomatous progression in pseudoexfoliation glaucoma (PXG) patients. PATIENTS AND METHODS:A retrospective observational study with a total of 48 PXG patients and age, sex, and visual field (VF) test mean deviation-matched 48 primary open-angle glaucoma (POAG) patie...
journal_title:Journal of glaucoma
pub_type: 杂志文章,多中心研究
doi:10.1097/IJG.0000000000000791
更新日期:2017-12-01 00:00:00
abstract:PURPOSE:To investigate changes in scanning laser polarimetry with variable corneal compensation (GDx-VCC) parameters caused by posterior capsular opacification (PCO). METHODS:In this comparative case-control series, 20 eyes due to undergo YAG laser capsulotomy for PCO were recruited. GDx-VCC was performed before and a...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/01.ijg.0000243469.05719.0d
更新日期:2007-01-01 00:00:00
abstract:SUMMARY:Subconjunctival fibrosis is one of the major causes of most bleb failures. To inhibit the wound-healing process and to achieve a better intraocular pressure (IOP) lowering effect as well as bleb formation, we performed a sclerostomy using a THC:YAG laser (thulium, holmium, and chromium-doped yttrium-aluminum-ga...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract:PURPOSE:The aim of this study was to improve the scanning peripheral anterior chamber depth analyzer (SPAC) for measuring anterior chamber depth (ACD), differentiating eyes with shallow anterior chamber, and automatically categorizing eyes into subgroups based on the ACD values. We also investigated its accuracy for me...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/01.ijg.0000212256.25573.44
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:To evaluate the systemic high sensitivity C-reactive protein (hsCRP) levels in patients with pseudoexfoliation syndrome (XFS) and pseudoexfoliation glaucoma (XFG). MATERIALS AND METHODS:We prospectively examined 31 patients with XFS, 26 with XFG, and 25 controls. To the study patients with the exclusion of ser...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e3181bdb570
更新日期:2010-08-01 00:00:00
abstract::Gonioscopy-assisted transluminal trabeculotomy (GATT) is a minimally invasive ab interno procedure, performed with guidance of an illuminating microcatheter device (iTrack). The pathophysiology of raised intraocular pressure (IOP) in uveitic glaucoma is commonly due to increased resistance at the trabecular meshwork-S...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000001641
更新日期:2020-10-01 00:00:00
abstract:PURPOSE:Upper eyelid sulcus deepening has recently been reported as an adverse effect of prostaglandin (PG) eye drop use. However, no data are available regarding the frequency of upper eyelid sulcus deepening caused by different types of PG eye drops. We used 5 types of PG eye drops in Japanese subjects and examined t...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e31824d8d7c
更新日期:2013-10-01 00:00:00
abstract:PURPOSE:To evaluate tonometric outcomes of patients with primary angle closure glaucoma (PACG) who have undergone trabeculectomy with mitomycin C (MMC) with and without concurrent phacoemulsification and to identify risk factors for postoperative failure. PATIENTS AND METHODS:Retrospective cohort study of 44 eyes of 3...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000493
更新日期:2016-09-01 00:00:00
abstract::Primary intraocular lymphoma can cause an elevation of intraocular pressure (IOP), resulting from infiltration of the trabecular meshwork with neoplastic lymphocytes. More rarely, therapeutic procedures can induce a highly synchronised death of tumor cells, leading to congestion of the trabecular meshwork with cell de...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e31827a0875
更新日期:2014-09-01 00:00:00
abstract:PURPOSE:The aim of this study was to quantitatively study the retinal nerve fiber layer (RNFL) thickness in children born prematurely with isolated optic nerve cupping. PATIENTS AND METHODS:Six otherwise healthy premature children with clinical evidence of increased cup to disc ratios were enrolled in this observation...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000006
更新日期:2014-01-01 00:00:00
abstract:PURPOSE:To compare the surgical outcomes between phaco-viscocanalostomy and phaco-trabeculotomy in open-angle glaucoma. PATIENTS AND METHODS:In a nonrandomized, retrospective clinical study, 110 eyes underwent phaco-viscocanalostomy (VCS group), and 110 eyes underwent phaco-trabeculotomy (LOT group). The mean follow-u...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/01.ijg.0000212265.96864.77
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:To report 2 cases of delayed-onset, bleb-related endophthalmitis induced by Gemella species. METHODS:Interventional case report. RESULTS:Two patients developed bleb-related ocular infection attributable to Gemella haemolysans and Gemella morbillorum after trabeculectomy with adjunctive mitomycin C. Both patie...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e31818c6f07
更新日期:2009-08-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy of CO2 laser-assisted sclerectomy surgery (CLASS) compared with classic nonpenetrating deep sclerectomy (NPDS) with implant in medically uncontrolled glaucoma patients. MATERIALS AND METHODS:Patients who underwent primary filtration surgery with CO2 laser system at the time interval be...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000187
更新日期:2016-07-01 00:00:00
abstract:PURPOSE:The GDx is a scanning laser polarimeter that assesses peripapillary nerve fiber layer thickness. In addition to the 14 existing outcome parameters, four new parameters have been described recently: the Ellipse Standard Deviation (ESD), the Normalized Superior Area (NSA), the Normalized Inferior Area (NIA) and t...
journal_title:Journal of glaucoma
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00061198-200402000-00006
更新日期:2004-02-01 00:00:00
abstract:OBJECTIVE:To describe reoperations in the operating room for complications encountered within 90 days after glaucoma surgery at a single institution over a 2-year period. DESIGN:Retrospective case series. SUBJECTS:Adult patients who have undergone glaucoma surgery including a tube shunt, trabeculectomy with mitomycin...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000001484
更新日期:2020-05-01 00:00:00
abstract:PURPOSE:The objective was to assess the long-term economic consequences of the medical management of glaucoma in the UK. METHODS:The economic evaluation was conducted using the results from a 10-year Markov model based around 3 key triggers for a switch in medical therapy for glaucoma, namely: lack of tolerance (using...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e31821dac2a
更新日期:2012-09-01 00:00:00
abstract:PURPOSE:Axenfeld-Rieger syndrome is a genetically heterogeneous, autosomal dominant disorder that is characterized by anterior segment defects, glaucoma, and extraocular anomalies. This study examined the two genes known to cause Rieger syndrome, PITX2 and FOXC1, for mutations in five Brazilian families with Axenfeld-R...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/00061198-200202000-00010
更新日期:2002-02-01 00:00:00
abstract:PURPOSE:We performed a literature synthesis to identify the full spectrum of compounds implicated in drug-induced, bilateral secondary angle-closure glaucoma (2° ACG). METHODS:Systematic PubMed literature review identified relevant bilateral 2° ACG case reports. We evaluated these reports with both the Naranjo adverse...
journal_title:Journal of glaucoma
pub_type: 杂志文章,评审
doi:10.1097/IJG.0000000000000270
更新日期:2016-02-01 00:00:00
abstract:PURPOSE:To compare the intraocular pressure-lowering effect of unoprostone isopropyl (unoprostone) 0.12% and latanoprost 0.005%. A correlation between the intraocular pressure-lowering effect of unoprostone and latanoprost was also evaluated. METHODS:A single-masked randomized study included 18 patients between 49 and...
journal_title:Journal of glaucoma
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00061198-200112000-00009
更新日期:2001-12-01 00:00:00
abstract:INTRODUCTION:Clinical practice guidelines (CPG) are regarded by many as critical communications providing guidance within specific medical fields. Over a decade ago, the first microinvasive glaucoma surgical (MIGS) procedures were introduced. Since then, a number of these novel intraocular pressure controlling surgical...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000820
更新日期:2018-02-01 00:00:00
abstract:PURPOSE:(1) To investigate the reference value of peak-trough difference in circadian rhythm of intraocular pressure (IOP) in habitual position and (2) to compare the IOP parameters among 3 age groups. MATERIALS AND METHODS:Habitual IOP of healthy subjects sampled from the population in the Handan Eye Study was measur...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0000000000000351
更新日期:2016-07-01 00:00:00
abstract:PURPOSE:To evaluate the outcome of modified deep sclerectomy [D-lectomy mitomycin C (MMC)] for medically refractory glaucoma patients. METHODS:In a retrospective comparative study, the surgical outcome in 1 eye each of 31 patients who underwent D-lectomy MMC was compared with that of 91 eyes of 91 patients who underwe...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/IJG.0b013e3181752cc8
更新日期:2009-02-01 00:00:00
abstract:PURPOSE:To determine the clinical features and anatomic parameters in asymptomatic (creeping) and symptomatic, chronic, primary angle-closure glaucoma (PACG) as compared with open-angle glaucoma (OAG) and with control subjects with normal eyes. METHODS:Forty consecutive patients with each of the following four types o...
journal_title:Journal of glaucoma
pub_type: 杂志文章
doi:10.1097/00061198-200006000-00002
更新日期:2000-06-01 00:00:00