Abstract:
PURPOSE:To determine novel diagnostic parameters for keratoconus, and to assess the correlation between anterior and posterior corneal surfaces based on vectorial astigmatism analyses. DESIGN:Retrospective case-control study. METHODS:Six hundred and ninety-eight eyes of 698 patients were enrolled in the study. Healthy corneas, or controls (C, n = 264), were compared to keratoconic corneas, further categorized as forme fruste (FFKc, n = 212) and overt keratoconus (Kc, n = 222). Corneal measurements were obtained from a Scheimpflug-based tomographer. Vectorial analyses were conducted in accordance with the method proposed by Thibos. RESULTS:Posterior corneal astigmatic power vector (APV) >0.23 diopter (D) yielded a test for overt Kc with sensitivity and specificity rates of, respectively, 81% and 77%, indicating a positive likelihood ratio (LR+) of 3.5 and a negative likelihood ratio (LR-) of 0.25. Posterior corneal overall blur vector (Blur) >6.45 D yielded a test slightly less sensitive and specific, with rates of 75% and 72%, respectively, associated to LR+ of 2.7 and LR- of 0.35. The highest (Spearman ρ) correlation coefficients between anterior and posterior corneal astigmatisms were associated with Blur, being 0.93 for Kc, 0.87 for C, and 0.81 for FFKc. The astigmatism vectors along the 45-degree (J45) and 0-dregree meridians (J0) and APV most often presented higher coefficient values for Kc and FFKc than for C (P = .01). CONCLUSIONS:Posterior corneal vectors APV and Blur constitute objective supplemental parameters for the diagnosis of Kc. Anterior and posterior corneal surfaces correlate in all groups, although it was not possible to accurately predict posterior astigmatism from anterior astigmatism.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Freitas Gde O,Ambrósio R Jr,Ramos I,Lopes B,Valbon Bde F,Botteon C,Alve MRdoi
10.1016/j.ajo.2016.04.008subject
Has Abstractpub_date
2016-07-01 00:00:00pages
65-71eissn
0002-9394issn
1879-1891pii
S0002-9394(16)30178-7journal_volume
167pub_type
杂志文章abstract:PURPOSE:To determine infectious causes in patients with uveitis of unknown origin by intraocular fluids analysis. DESIGN:Case-control study. METHODS:Ocular fluids from 139 patients suspected of infectious uveitis, but negative for herpes simplex virus, varicella-zoster virus, cytomegalovirus, and Toxoplasma gondii by...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2010.05.015
更新日期:2010-11-01 00:00:00
abstract:PURPOSE:To report a possible association of glaucoma with Parkinson's disease and Alzheimer's disease. METHODS:Retrospective chart review (observational case series). The ophthalmologic charts of 49 patients with Alzheimer's disease and of 38 patients with Parkinson's disease were reviewed to determine the occurrence ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(01)01196-5
更新日期:2002-01-01 00:00:00
abstract:PURPOSE:To describe clinical outcomes of complications afflicting the autologous oral mucous membrane graft after modified osteo-odonto keratoprosthesis surgery in chronic Stevens-Johnson syndrome (SJS). DESIGN:Prospective case series. METHODS:This study included 30 eyes of 30 patients with SJS-induced dry keratinize...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2013.06.012
更新日期:2013-11-01 00:00:00
abstract:PURPOSE:To report a case of extensive cephalic and basilic venous thrombosis after fluorescein angiography. DESIGN:Interventional case report. METHODS:A 38-year-old Chinese male presented with blurring of vision in his left eye. Clinical examination revealed central serous retinopathy, and a routine fluorescein angio...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2004.10.058
更新日期:2005-05-01 00:00:00
abstract::The prevalence of diabetic retinopathy was lower in a rural diabetic population when compared to the prevalence of diabetic retinopathy in medical center clinic populations. Adult-onset (Type II) diabetics were at greater risk for developing diabetic retinopathy shortly after diagnosis than newly diagnosed cases of ju...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(84)90502-6
更新日期:1984-06-01 00:00:00
abstract:PURPOSE:To measure the changes in optic disk morphology after unilateral disk hemorrhage and to compare the changes between eyes. DESIGN:Observational case series. METHODS:Ten glaucoma patients who had a unilateral disk hemorrhage were enrolled. The baseline measurements obtained by Heidelberg Retina Tomograph (HRT) ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(02)01791-9
更新日期:2002-12-01 00:00:00
abstract:PURPOSE:To investigate the validity of assigning patients whose eyes have been removed for ciliary body or choroidal melanoma to risk groups for metastasis based on the identification of microcirculatory patterns in one cross-section taken from the center of the tumor. METHODS:Multiple levels were cut through the bloc...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(98)00092-0
更新日期:1998-09-01 00:00:00
abstract:PURPOSE:To identify visually significant spectral-domain optical coherence tomography (SD-OCT) features of epiretinal membranes (ERM) in patients with uveitis. DESIGN:Retrospective cohort and cross-sectional study. METHODS:Eighty consecutive eyes with uveitis and SD-OCT-documented ERM were included. Clinical data wer...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2012.01.032
更新日期:2012-07-01 00:00:00
abstract:PURPOSE:To report a patient with idiopathic retinal venous beading and recurrent preretinal hemorrhage. METHOD:Case report of a 17-year-old girl with bilateral retinal venous beading, greater in the left eye than in the right eye, and recurrent preretinal hemorrhage in the left eye. RESULTS:Complete blood cell count,...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)71087-6
更新日期:1997-05-01 00:00:00
abstract:PURPOSE:To compare the long-term efficacy and safety of 2 operation methods for late in-the-bag intraocular lens (IOL) dislocation. DESIGN:Prospective, randomized, parallel group surgical clinical trial. METHODS:During a 3-year period, 104 patients (104 eyes) were assigned one group for IOL repositioning by scleral s...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,随机对照试验
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更新日期:2019-11-01 00:00:00
abstract:PURPOSE:To report a series of dislocations of the donor graft into the posterior segment associated with Descemet stripping endothelial keratoplasty (DSAEK) and to identify possible risk factors for dislocation and clinical outcomes. DESIGN:Retrospective case series. METHODS:Cases of donor graft dislocation into the ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajo.2011.09.006
更新日期:2012-04-01 00:00:00
abstract:PURPOSE:To compare the intraocular pressure (IOP)-lowering efficacy and safety of netarsudil once daily (QD) and timolol twice daily (BID). DESIGN:Double-masked, randomized, phase 3, noninferiority study. METHODS:Patients with open-angle glaucoma or ocular hypertension (unmedicated baseline IOP >20 to <30 mm Hg at 8:...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.ajo.2019.03.002
更新日期:2019-08-01 00:00:00
abstract::A 7-year-old boy with acute lymphocytic leukemia developed iris infiltration, blood-streaked hypopyon, and high intraocular pressure. A diagnostic anterior chamber paracentesis was performed, which provided a cytologic diagnosis. The aspirate was studied by both the millipore filter technique with Papanicolaou stain a...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(80)90112-9
更新日期:1980-02-01 00:00:00
abstract:PURPOSE:To evaluate postkeratoplasty astigmatism between two suture techniques 2 to 4 years postoperatively in a group of patients previously studied 9 months postoperatively. METHODS:Thirty-two patients who underwent penetrating keratoplasty were randomly assigned to one of two groups. Group 1 (16 patients) had a 24-...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0002-9394(14)70489-1
更新日期:1996-11-01 00:00:00
abstract::As exemplified by the collaborative Diabetic Retinopathy Study, all the appropriate techniques involved in a clinical trial-random assignment of treatment, appropriate controls, and avoidance of investigator bias-should be incorporated during the earliest testing of a new therapy for a chronic disease, for the sake of...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章
doi:
更新日期:1975-04-01 00:00:00
abstract::Severe retrobulbar hemorrhage may occur as a complication of a retrobulbar injection or from blunt or sharp injury to the orbit during an orbital or periorbital operation. When the patient with a severe retrobulbar hemorrhage does not respond to intermittent ocular massage, or paracentesis, or a lateral canthotomy, pr...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)71740-4
更新日期:1993-07-15 00:00:00
abstract::We modified trabeculo-iridocyclosclerectomy in a technique for en bloc excision of anterior uveal tumor. A trabeculectomy-type of approach was used, which allowed excision of a rectangular block of sclera, cornea, and trabeculum with attached uveal tissue containing the tumor. ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(79)90657-3
更新日期:1979-09-01 00:00:00
abstract:PURPOSE:To present a new surgical technique for severe, symptomatic conjunctivochalasis and our hypothesis of the pathogenesis of this condition. METHODS:Six eyes of three patients with conjunctivochalasis (average age +/-SD, 70.0 +/- 9.6 years; range, 56-78 years) were treated with a conjunctival fixation to sclera w...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(99)00384-0
更新日期:2000-03-01 00:00:00
abstract:PURPOSE:To report two cases of diffuse unilateral subacute neuroretinitis (DUSN) with unusual findings. DESIGN:Observational and interventional case series. METHODS:Two patients with DUSN were found to have the unusual findings of a large live worm in one eye and macular cyst in the other. Both patients underwent fun...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2006.06.005
更新日期:2006-11-01 00:00:00
abstract:PURPOSE:To examine the effect of basic fibroblast growth factor on induced choriocapillaris atrophy in vivo. METHODS:Choriocapillaris atrophy was surgically induced in rabbits by a hydraulic retinal detachment followed by debridement of the retinal pigment epithelium under the detached retina. Three concentrations of ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(01)00921-7
更新日期:2001-07-01 00:00:00
abstract::A 7 1/2-year-old boy died of the Jansky-Bielschowsky type of neuronal ceroidlipofuscinosis. Although an electroretinogram showed reduced activity, pigmentary retinal atrophy was not demonstrable by ophthalmoscopy two years before death. At autopsy, the retina had severe loss of photoreceptor cells, pigment displacemen...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(77)90194-5
更新日期:1977-01-01 00:00:00
abstract::Conjunctivodacryocystorhinostomy with a Jones tube is an accepted procedure for the treatment of epiphora resulting from obstructed canaliculi. Because of our clinical impression that a high rate of functional success after surgery is associated with a lower rate of patient satisfaction, we analyzed the results and pa...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)70070-4
更新日期:1994-05-15 00:00:00
abstract:PURPOSE:In previous studies of fungal keratitis (FK) from temperate countries, yeasts were the predominant isolates, with ocular surface disease (OSD) being the leading risk factor. Since the 2005-2006 outbreak of contact lens (CL)-associated Fusarium keratitis, there may have been a rise in CL-associated filamentary F...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2016.05.021
更新日期:2016-08-01 00:00:00
abstract::Total outflow facility was determined in cynomolgus monkeys by two-level constant pressure perfusion. Topical epinephrine increased facility by 30% to 35% three to four hours after dosing, whether given as a single 600-micrograms dose or as twice daily 600-micrograms doses for three days. A single 5.5-micrograms intra...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)75985-9
更新日期:1990-02-15 00:00:00
abstract::We applied vitreous surgical techniques in the treatment of hemorrhagic and fibrous complications of choroidal neovascular membranes by removing subretinal scars or hemorrhage, or both, in four patients. The surgical goals were achieved in all patients. Visual acuity improved in three patients. The major complication ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(88)90116-x
更新日期:1988-01-15 00:00:00
abstract:PURPOSE:To evaluate the effects of a dexamethasone intravitreous drug delivery system (dexamethasone DDS) in patients with persistent macular edema (ME) resulting from uveitis or Irvine-Gass syndrome. DESIGN:Randomized, prospective, single-masked, controlled trial. METHODS:Three hundred and fifteen patients with pers...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.ajo.2008.12.033
更新日期:2009-06-01 00:00:00
abstract:PURPOSE:To compare polymerase chain reaction (PCR) results to presumptive clinical diagnosis in patients with vitritis. DESIGN:Retrospective review of PCR laboratory records from vitreous samples. METHODS:Fifty consecutive laboratory records of vitreous samples sent for PCR testing were reviewed. Three reviewers with...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2005.10.011
更新日期:2006-03-01 00:00:00
abstract:OBJECTIVE:To report clinicopathologic features, radiologic findings, and treatment outcomes of isolated, orbital aspergillosis. DESIGN:Multicenter, retrospective case series. METHODS:setting: Multicenter. PARTICIPANTS:There were 8 lesions in 8 eyes of 8 patients with isolated, orbital aspergillosis. PROCEDURE:Revie...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajo.2016.03.007
更新日期:2016-05-01 00:00:00
abstract::In the elderly patient with a massive vitreous hemorrhage in one eye and senile macular choroidal degenerative changes in the fellow eye, a hemorrhagic disciform detachment causing this massive vitreous hemorrhage must be considered in the differential diagnosis. Ultrasonography selectively combined with radioactive p...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)75023-8
更新日期:1980-10-01 00:00:00
abstract:PURPOSE:To describe ocular manifestations in patients with the VACTERL (vertebral, anal, cardiovascular, tracheoesophageal, renal, and limb defects) association. METHOD:We reviewed the medical records of patients with the VACTERL association who had undergone treatment for amblyopia at the orthoptic department. RESUL...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(99)80241-4
更新日期:1998-01-01 00:00:00