Abstract：
PURPOSE:To assess the accuracy with which the Keratron keratoscope (Optikon 2000, Rome, Italy) measured astigmatic test surfaces by a profile reconstruction algorithm within a plane geometry model and to discriminate between error caused by the model and error caused by other factors. METHODS:Height was reported by the Keratron for eight surfaces with central astigmatism ranging from 4 to 16 diopters. A three-dimensional ray tracing simulation produced theoretic reflected ring patterns on which the Keratron's reconstruction algorithm was performed. The Keratron's measurements were compared with the surfaces' formulas and the ray-traced simulations. RESULTS:With a new mathematical filter for smoothing ring data, now part of the Keratron's software, maximum error was 0.47% of the total height and was usually less than 1% of local power for surfaces with 4 diopters of astigmatism. For surfaces with 16 diopters of astigmatism, maximum error was as high as 2.9% of total height and was usually less than 2.5% of local power. The reconstruction algorithm accounted for 40% and 70% of height error, respectively. CONCLUSIONS:The efficacy of keratoscopes cannot be assumed from their design theories but must be tested. Although plane geometry surface reconstruction contributed greatly to total height error, total error was so small that it is unlikely to affect clinical use.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Tripoli NK,Cohen KL,Obla P,Coggins JM,Holmgren DEdoi
10.1016/s0002-9394(14)70633-6subject
Has Abstractpub_date
1996-06-01 00:00:00pages
668-76issue
6eissn
0002-9394issn
1879-1891pii
S0002-9394(14)70633-6journal_volume
121pub_type
杂志文章abstract：PURPOSE:To report the trends in intraocular pressures (IOP) within the first week after intravitreal injection of triamcinolone acetonide (Kenalog) for the treatment of retinal disease. DESIGN:Retrospective chart review. METHODS:Review of 43 consecutive patients and 50 intravitreal injections of 4 mg triamcinolone ac...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2006.08.033
更新日期：2007-02-01 00:00:00
abstract：PURPOSE:To study the effect of commonly used preservative free artificial tear, carboxymethylcellulose (CMC) 0.5% (Refresh Plus, Allergan, Irvine, California) on visual acuity in symptomatic dry eye (SDE) and asymptomatic dry eye (ADE) patients. DESIGN:Nonrandomized prospective clinical trial. METHODS:Prospective stu...
journal_title：American journal of ophthalmology
pub_type： 临床试验,杂志文章
doi：10.1016/j.ajo.2005.05.001
更新日期：2005-11-01 00:00:00
abstract：PURPOSE:To increase the vaccination rate and identify barriers to administration of the vaccine against herpes zoster by having ophthalmologists screen and provide the vaccine. DESIGN:Prospective interventional cohort study. METHODS: SETTING:Academic City Hospital, Bellevue Hospital. PARTICIPANTS:A total of 100 eli...
journal_title：American journal of ophthalmology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajo.2012.11.022
更新日期：2013-05-01 00:00:00
abstract：PURPOSE:To comprehensively evaluate the effectiveness of different types of laser trabeculoplasty (LT) in the treatment of open-angle glaucoma. DESIGN:Systematic review and network meta-analysis. METHODS:Eligible randomized controlled trials (RCT) were identified by searching PubMed, EMBASE, Cochrane Library, SCOPUS,...
journal_title：American journal of ophthalmology
pub_type： 杂志文章,评审
doi：10.1016/j.ajo.2020.07.046
更新日期：2020-09-01 00:00:00
abstract：PURPOSE:To evaluate the efficacy of spectral-domain optical coherence tomography (SD OCT) compared to indocyanine green angiography (ICGA) in detecting idiopathic polypoidal choroidal vasculopathy (PCV) and in differentiating between PCV and occult choroidal neovascularization (CNV). DESIGN:Retrospective observational...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2014.08.025
更新日期：2014-12-01 00:00:00
abstract：:We conducted a retrospective study of 25 patients with acute-onset comitant esotropia to evaluate whether the timing of the start of treatment is a critical factor in the development of normal stereopsis. The mean age at onset was 12 years 4 months, and mean age at the start of treatment was 17 years 9 months. Bifixat...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(14)75803-9
更新日期：1994-10-15 00:00:00
abstract：PURPOSE:To describe the ultrasound biomicroscopic features of eyes with aniridia. DESIGN:Observational case series. METHODS:Nineteen eyes of 10 patients with aniridia (six males and four females) ranging in age from 3 months to 53 years (21.0 +/- 16.4, mean +/- SD), and 50 normal subjects (30 men and 20 women) rangin...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2003.12.014
更新日期：2004-05-01 00:00:00
abstract：:Seventeen patients (ten women and seven men, 23 to 72 years old) with stromal herpetic disease were treated with topical and oral acyclovir for 14 days. Of the 12 patients with disciform edema, five showed minimal improvement, four showed no change, and three showed worsening of their disease. Of the five patients wit...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(84)90237-x
更新日期：1984-11-01 00:00:00
abstract：PURPOSE:To describe a case of severe dry eye syndrome in a child. METHODS:Observational case report. The authors describe a 10-year-old male with severe dry eyes who was profoundly disabled by pain and photophobia despite aggressive conventional therapy. Lacrimal gland histology was consistent with the primary Sjögren...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(01)01182-5
更新日期：2001-12-01 00:00:00
abstract：:We managed three cases of congenital iris stromal cysts and compared them with 22 cases in the published reports to delineate the clinical features of this condition and determine the best treatment. Our first patient, a 5-month-old girl, had injection of a cyst with trichloroacetic acid, but developed a cataract and ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9394(14)71291-7
更新日期：1993-08-15 00:00:00
abstract：:Study of a father and son who had helicoid peripapillary chorioretinal degeneration suggests that a progressive tearing and retraction of the retinal pigment epithelium or of Bruch's membrane around the optic disk may be involved in the disorder's pathogenesis. We presume that this tearing results primarily from dyspl...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(14)74552-0
更新日期：1990-03-15 00:00:00
abstract：:We noted two instances of forceps-induced fragmentation of the bar used for scleral plug storage during vitreous surgery. The silicone bar material was adherent to the plug in both cases. Because this represents a significant intraocular foreign body hazard, the scleral plug should be carefully inspected before insert...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(82)90542-6
更新日期：1982-03-01 00:00:00
abstract：PURPOSE:To report an unusual case of orbital floor implant migration across the ethmoidal sinuses and nasal septum. METHOD:Case report. A 61-year-old woman with a history of right orbital floor fracture repair 25 years earlier is described. RESULTS:The patient presented with sinus congestion and difficulty breathing ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(98)00239-6
更新日期：1998-12-01 00:00:00
abstract：:Photic retinopathy was produced in two patients after a 60-minute exposure to light from an operating room microscope (Zeiss OpMi 6). The first patient had a blind eye with clear (phakic) media and a normal-appearing retina. A 60-minute exposure produced an oval gray lesion in the posterior pole at the level of the pi...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(86)90946-3
更新日期：1986-05-15 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：: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：PURPOSE:To assess the relationship between iris color and intraocular pressure (IOP). DESIGN:Population-based, cross-sectional study. METHODS:The Blue Mountains Eye Study examined 3,654 largely Caucasian participants, aged 49 to 97 years, from 1992 to 1994. Information was collected about glaucoma risk factors, and G...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(02)01967-0
更新日期：2003-03-01 00:00:00
abstract：:Primary oculomotor nerve synkinesis is almost always caused by an intracavernous meningioma or aneurysm. We treated a patient who had signs of primary oculomotor nerve synkinesis from an unruptured extracavernous aneurysm located at the junction of the internal carotid artery and the posterior communicating artery. Th...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(14)72846-6
更新日期：1994-07-15 00:00:00
abstract：PURPOSE:To compare the clinical features and antibiotic susceptibility of ocular methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive Staphylococcus aureus (MSSA). DESIGN:Cross-sectional study. METHODS:The Proctor clinical laboratory database was reviewed to identify all ocular isolates of S. ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2007.03.032
更新日期：2007-08-01 00:00:00
abstract：:We assessed 81 patients in four groups (normal, low- and high-risk ocular hypertension, and early glaucoma) with the standard Octopus G1 central visual field program in addition to two quantitative programs, PFN (peripheral field-nasal) and PFT (peripheral field-temporal), designed for this study to test the nasal and...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(88)90831-8
更新日期：1988-08-15 00:00:00
abstract：PURPOSE:To describe follow-up rates for patients referred for outpatient ophthalmic care after emergency department (ED) discharge and identify patient and visit characteristics associated with loss to follow-up (LTFU). DESIGN:Single-institution retrospective cohort study. METHODS:We analyzed the medical records of 2...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2020.08.038
更新日期：2020-09-01 00:00:00
abstract：:To study the retinal surface in the human eye in normal and diseased states we used laser scanning tomography. The confocal arrangement of the laser tomographic scanner permits examination of retinal topography in the axis perpendicular to the retinal surface. The eyes examined with the laser tomographic scanner inclu...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(89)90118-9
更新日期：1989-09-15 00:00:00
abstract：:We perfused enucleated human eyes via the anterior chamber by the constant pressure technique. Infusion of human serum into the anterior chamber of enucleated human eyes for 30 minutes at 23 mm Hg pressure induced a 42% decrease in facility of outflow, which was not relieved by irrigation of the anterior chamber with ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(78)90023-5
更新日期：1978-07-01 00:00:00
abstract：:Media opacification in eyes filled with silicone oil makes the evaluation of recurrent retinal detachment difficult. Ultrasonography through silicone oil is subject to significant imaging artifacts. We performed magnetic resonance imaging on six patients with unilateral intravitreal silicone oil to determine if the te...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(14)77016-3
更新日期：1990-10-15 00:00:00
abstract：PURPOSE:To report endoscopic findings in the anterior chamber angle during injection of viscoelastic material in viscocanalostomy (VCS). DESIGN:Observational case reports. METHODS:Two cases of primary open-angle glaucoma were treated with VCS and cataract surgery. Immediately before and during injection of viscoelast...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/j.ajo.2004.06.040
更新日期：2004-12-01 00:00:00
abstract：:To facilitate placing pars plana infusion ports, we modified the shaft of a piece of 10-gauge tubing or of a hypodermic needle by removing the beveled tip and Luer hub, passing the tubing through the inserter sleeve, and then reattaching the tubing to the Luer hub. ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(78)90251-9
更新日期：1978-09-01 00:00:00
abstract：:The Vogt-Koyanagi-Harada syndrome includes inflammation of the uveal tract, retina, and meninges. Integumentary and auditory signs are common. Neurologic involvement has been reported. We studied two patients who manifested many of the varied clinical signs of Vogt-Koyanagi-Harada syndrome, but who also showed focal n...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(81)90286-5
更新日期：1981-03-01 00:00:00
abstract：:Cataract operations may be recommended when retinal disease is suspected but cannot be adequately diagnosed or treated because of lens opacity. We evaluated the outcome of cataract operations performed under those circumstances. We reviewed the records of 119 patients who were examined at the Wilmer Retinal Vascular C...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/s0002-9394(14)75793-9
更新日期：1994-10-15 00:00:00
abstract：:Of 150 consecutive cases of preretinal macular fibrosis that occurred predominantly in older subjects, 118 cases involved only one eye while 32 occurred binocularly. The ratio of women to men was 3:2. Visual acuity was usually 20/50 or better, and only four of 178 eyes had acuity below 20/200. The vast majority of les...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(75)90605-4
更新日期：1975-03-01 00:00:00
abstract：:Patients with presumed ocular histoplasmosis syndrome were typed for HLA-A, B, C, and DR antigens. It was found that 21 (81%) of 26 of the presumed ocular histoplasmosis syndrome patients with disciform macular scarring and 8 (62%) of 13 of the presumed ocular histoplasmosis syndrome patients with peripheral atrophic ...
journal_title：American journal of ophthalmology
pub_type： 杂志文章
doi：10.1016/0002-9394(80)90232-9
更新日期：1980-01-01 00:00:00
