Abstract:
PURPOSE:To evaluate a new computerized segmentation technique for the quantification of intraretinal and subretinal fluid in spectral-domain optical coherence tomography (SD OCT) images of the retina. DESIGN:Prospective, cross-sectional study. METHODS:Thirty-seven B-scan images of 37 patients with exudative age-related macular degeneration were chosen randomly from SD OCT volume scans (1 per volume scan). All hyporeflective areas in the image first were segmented automatically as candidate regions by the program. Researchers who were masked to the candidate region information selected each fluid region from the original image using a single mouse click. The program then delineated the boundary of each region selected and calculated quantitative parameters, including total area of fluid regions if multiple regions were selected. The performance of our technique was validated by comparing the results with the measurements obtained from boundaries manually delineated by 2 masked observers. Time efficiency, agreement with manual delineation, and intraobserver and interobserver agreement of using the program were evaluated. RESULTS:The proposed technique reduced the average processing time per image approximately 6-fold (15 seconds for computerized segmentation vs 90 seconds for manual delineation). There was good agreement between computerized segmentation and manual delineation measured by intraclass correlation coefficient (range, 0.897 to 0.979) and the Dice coefficient (range, 0.721 to 0.785). The proposed technique has excellent intraobserver and interobserver agreement (intraclass correlation coefficient range, 0.998 to 0.999; Dice coefficient range. 0.959 to 0.981). CONCLUSIONS:This computerized segmentation method allows for accurate and fast quantification of fluid in retinal SD OCT images and could assist in monitoring disease progression and evaluating therapeutic intervention.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Zheng Y,Sahni J,Campa C,Stangos AN,Raj A,Harding SPdoi
10.1016/j.ajo.2012.07.030subject
Has Abstractpub_date
2013-02-01 00:00:00pages
277-286.e1issue
2eissn
0002-9394issn
1879-1891pii
S0002-9394(12)00559-4journal_volume
155pub_type
杂志文章abstract:PURPOSE:To report the association of antiretinal antibodies in patients with bilateral cystoid macular edema and retinitis pigmentosa. METHODS:In a prospective study, 30 consecutive patients with bilateral cystoid macular edema and retinitis pigmentosa were tested for antiretinal antibodies. As control subjects, 30 co...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(98)00446-2
更新日期:1999-05-01 00:00:00
abstract::Fluorescein angiography was safely performed in 100 consecutive cases of cataract extraction during the first postoperative week. Seventy-five percent of the 100 eyes had good quality fluorescein angiograms. Four eyes demonstrated cystoid macular edema. Therefore, the incidence of cystoid macular edema in the first we...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(76)90126-4
更新日期:1976-05-01 00:00:00
abstract::A 65-year-old white man had an unusual disseminated lymphoid tumor that first appeared in the subconjunctival tissues of the right eye. The tumor later appeared in the skin, lymph nodes, and left upper eyelid and orbit. A monoclonal serum IgA spike was present although the urine did not contain Bence Jones proteins. T...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(75)90082-3
更新日期:1975-02-01 00:00:00
abstract::Benign lateral rectus palsy developed in two adults, a 62-year-old man and a 56-year-old woman. Both were hospitalized because of headache and diplopia. Extensive laboratory and neurologic testing showed no abnormalities except leukopenia (the white blood cell count was 2,600 cells/mm3 in one patient and 3,100 cells/m...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(82)90254-9
更新日期:1982-10-01 00:00:00
abstract::One of the problems with corneal grafting is the occurrence of rejection. Immune reaction is considered to be an important cause of graft failure. Early recognition of such graft reaction can frequently be treated successfully with intensive topical administration of corticosteroids. Generally, I prefer to add systemi...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)74983-9
更新日期:1985-07-15 00:00:00
abstract:PURPOSE:To correlate fractal dimension (FD) of the retinal vasculature with the extent of retinal nonperfusion area in diabetic retinopathy (DR) on ultrawide-field fluorescein angiography (FA). DESIGN:Cross-sectional study. METHODS:Baseline Optos 200Tx ultrawide-field FA images of 80 eyes with DR from the DAVE (NCT01...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.ajo.2019.08.015
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To evaluate the specificity of current definitions used to identify progressive change of the average peripapillary retinal nerve fiber layer (RNFL) thickness measurements obtained on optical coherence tomography (OCT) imaging. DESIGN:Prospective observational cohort study. METHODS:Setting: University of Cali...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2017.06.017
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:To determine whether the risk of graft failure in patients with glaucoma is dependent on the indication for penetrating keratoplasty (PK). DESIGN:Retrospective cohort study. METHODS:All patients on the United Kingdom Transplant Registry undergoing their first PK over a 7-year period with at least 1 year of fo...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2010.08.018
更新日期:2011-02-01 00:00:00
abstract:PURPOSE:To evaluate the in vivo durability of the surface and optical properties of the implantable Collamer lens (ICL). DESIGN:Retrospective case series. METHODS:We included patients who developed cataracts after having undergone ICL implantation from March 2003 to May 2014 and underwent ICL explantation followed by...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2020.06.025
更新日期:2020-11-01 00:00:00
abstract::A 30-year-old man developed bilateral iridocyclitis with iris roseolae and papules three months after the rash of secondary syphilis. The inflammation resolved after treatment with penicillin, intramuscularly, topically given corticosteroids, and cycloplegics. The serum immune-complex levels were slightly increased. I...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)74921-9
更新日期:1980-09-01 00:00:00
abstract:PURPOSE:To report the clinicopathologic findings in patient with optic nerve sheath hemangiopericytoma. DESIGN:Clinicopathologic report. METHODS:The clinical, histologic, and immunohistochemical findings of a patient with optic nerve sheath hemangiopericytoma were reviewed. RESULTS:An excisional biopsy of an optic n...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2006.11.046
更新日期:2007-05-01 00:00:00
abstract:PURPOSE:To evaluate the outcomes of epiretinal membrane (ERM) surgery in highly myopic eyes without traction maculopathy, and to compare them with those from non-highly myopic eyes. DESIGN:Retrospective nested case-control study from a cohort of 509 consecutive patients (509 eyes) who underwent pars plana vitrectomy w...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2013.03.035
更新日期:2013-08-01 00:00:00
abstract::Three hundred two cases of epibulbar tumors in children were retrospectively reviewed histologically and examined by diagnostic categories over a 49-year period. Of the 302 cases, 33% were choristomas; 29% nevi; 11%, epithelial inclusion cysts; 7%, papillomas; 6%, pyogenic granulomas; and 5% granulomas. Three cases of...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(75)90685-6
更新日期:1975-06-01 00:00:00
abstract:PURPOSE:To report a modified transposition procedure of the vertical recti for severely limited abduction of the globe caused by sixth nerve palsy and to compare this with the Hummelsheim transposition procedure. METHODS:Retrospective study of 13 eyes of 12 patients that had Hummelsheim transposition procedure and 19 ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(00)00805-9
更新日期:2001-03-01 00:00:00
abstract::Forty-three patients who initially presented with Krikenberg's spindles but with no glaucomatous field defects were observed for an average of 5.8 years in an attempt to evaluate the prognostic implication of spindle presence. Twenty-two of the patients had been followed for a minimum of five years. Analysis of the st...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(75)90075-6
更新日期:1975-02-01 00:00:00
abstract:PURPOSE:compare the results of vitrectomy with or without arteriovenous (AV) crossing sheathotomy for macular edema associated with branch retinal vein occlusion (BRVO). DESIGN:Interventional case series. METHODS:A retrospective study of 36 eyes with BRVO-associated macular edema. Twenty eyes underwent AV sheathotomy...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2004.06.061
更新日期:2004-12-01 00:00:00
abstract::A 55-year-old woman developed a skin rash and lipid deposition centrally in previously normal corneas. Despite a family history of coronary artery disease, no serum lipid abnormality was detected. Lipid droplets and granules were deposited throughout the corneal epithelium and stroma. Histochemical stains were positiv...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章
doi:10.1016/0002-9394(77)90496-2
更新日期:1977-12-01 00:00:00
abstract::Four patients (three men, 68, 35, and 33 years old, and one woman, 46 years old) had central serous elevation of the macula with abnormal latency of the visual-evoked potential and spontaneous Pulfrich phenomenon. In three instances both the electrophysiologic test and the clinical Pulfrich test reverted to normal on ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(85)90684-1
更新日期:1985-10-15 00:00:00
abstract:PURPOSE:To report a novel mutation of the CYP1B1 gene in a Japanese patient with primary infantile glaucoma. METHODS:DNA was extracted from leukocytes of six unrelated patients with primary infantile glaucoma. The coding regions of the CYP1B1 gene were amplified by polymerase chain reaction, examined by agarose gel se...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(99)00143-9
更新日期:1999-09-01 00:00:00
abstract:PURPOSE:To present a case of congenital toxoplasmosis in a newborn whose mother had a 20-year history of a chorioretinal macular scar and positive serology for toxoplasmosis. DESIGN/METHODS:Case report. SETTING/RESULTS: A 38-year-old woman who had been treated for ocular toxoplasmosis 20 years earlier delivered a newb...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(03)00191-0
更新日期:2003-08-01 00:00:00
abstract:PURPOSE:Although the association of cystoid macular edema with peripheral choroidal melanoma has been studied previously, the pathogenesis of cystoid macular edema as evaluated by light and electron microscopy remains controversial. We evaluated the cause of cystoid macular edema at the retinal capillary level. METHOD...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)73867-x
更新日期:1995-02-01 00:00:00
abstract:PURPOSE:To report a case of presumed congenital hypertrophy of the retinal pigment epithelium in the fovea of an 88-year-old woman in the setting of geographic atrophy from age-related macular degeneration. DESIGN:Observational case report. METHODS:An 88-year-old woman was examined. RESULTS:Best-corrected visual acu...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(02)01845-7
更新日期:2003-01-01 00:00:00
abstract:PURPOSE:To describe patients with late-onset pseudoxanthoma elasticum (PXE) associated with a likely hypomorphic ABCC6 variant. DESIGN:Retrospective observational case series. METHODS:Clinical evaluation, multimodal retinal imaging, genetic testing, and molecular modeling. RESULTS:Three patients, in whom vision symp...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2020.05.009
更新日期:2020-10-01 00:00:00
abstract::I fitted nine aphakic patients who had undergone penetrating keratoplasty with extended-wear hydrophilic contact lenses (55% to 80% water content). All patients had edematous host corneas. Eight of nine developed vascularization of the graft after two to 30 weeks of contact lens wear. One patient developed a presumed ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)74912-8
更新日期:1980-09-01 00:00:00
abstract:PURPOSE:To quantify ocular higher-order aberrations (HOAs) in eyes with supernormal vision, that is, natural uncorrected visual acuity (UCVA) > or = 20/15, to analyze the correlation between ocular HOAs and age in these eyes, and to investigate the correlation of HOAs between right and left eyes. DESIGN:Observational ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2004.08.035
更新日期:2005-02-01 00:00:00
abstract:PURPOSE:To estimate point prevalence of uveal melanoma in the patients with germline BAP1 pathogenic variant. DESIGN:Cohort study with risk assessment using Bayesian analysis. METHODS:The point prevalence estimate was obtained by Bayes's rule of reverse conditional probabilities. The probability of uveal melanoma giv...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2020.12.005
更新日期:2020-12-11 00:00:00
abstract:PURPOSE:To examine whether the encouraging functional results one year after photodynamic therapy (PDT) can be maintained up to three years. DESIGN:Prospective interventional case series. METHODS:Highly myopic eyes that had been treated with PDT for subfoveal choroidal neovascularization and had been observed at leas...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2005.03.050
更新日期:2005-09-01 00:00:00
abstract::After penetrating keratoplasty, visual rehabilitation can be slow and is largely a function of corneal surface configuration. Computerized topographic analysis allows the detailed study of corneal surface factors that determine the optical function of the graft. We performed a prospective, longitudinal study of eight ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)73925-x
更新日期:1993-02-15 00:00:00
abstract:PURPOSE:To report color vision abnormalities associated with diabetic retinopathy. METHODS:Color vision function was measured at baseline in 2,701 patients enrolled in the Early Treatment Diabetic Retinopathy Study, a randomized trial investigating photocoagulation and aspirin in the treatment of diabetic retinopathy....
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(99)00227-5
更新日期:1999-11-01 00:00:00
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. Health...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2016.04.008
更新日期:2016-07-01 00:00:00