Abstract:
PURPOSE:To report a physician survey, laboratory studies, and clinical observations of intraoperative crystallization on the surface of the intraocular lens (IOL). METHOD:We sent a survey to all ophthalmologists in the states of Wyoming, Idaho, Montana, Utah, and Colorado asking whether crystallization on the IOL surface had occurred in any of their patients and what viscoelastics, IOLs, and other solutions were used. All returned surveys were tabulated and analyzed by standard statistical means. A sample of crystallization from an IOL on a glass slide submitted by a physician was analyzed to ascertain the relative elemental composition. During in vitro laboratory studies, BSS Plus (Alcon Surgical, Fort Worth, Texas) and BSS (Alcon Surgical) were measured and analyzed for precipitation. Healon GV (Pharmacia/Upjohn, Kalamazoo, Michigan) and calcium chloride were combined in various solutions and examined for precipitate formation. Silicone IOLs and plate silicone were placed in different BSS and BSS Plus solutions with different viscoelastics and varying calcium concentrations. In seven patients, prominent crystallization on an IOL surface was examined, photographed, and followed for up to 3 years. RESULTS:Two hundred six surveyed ophthalmologists returned 181 surveys (88%) and reported 29,609 cataract surgeries, with IOL implantation with 22 eyes (0.07%) (22 patients) in which intraoperative crystallization was observed on the IOL surface during 1993. The survey indicated there was a correlation with BSS Plus (chi-square = 4.9, P = .0268) and silicone IOLs (chi-square = 6.8, P = .0093). The sample showed the cation to be calcium. CONCLUSION:Crystallization on the IOL surface during cataract surgery is a rare occurrence that may be associated with calcium as the cation related to an osmotic gradient around the IOL with increased calcium concentration. If encountered surgically, the lens should be exchanged in the operating theater after irrigating the anterior chamber with BSS and completely filling the capsular bag with a low molecular weight viscoelastic.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Olson RJ,Caldwell KD,Crandall AS,Jensen MK,Huang SCdoi
10.1016/s0002-9394(98)00076-2subject
Has Abstractpub_date
1998-08-01 00:00:00pages
177-84issue
2eissn
0002-9394issn
1879-1891pii
S0002939498000762journal_volume
126pub_type
杂志文章abstract:PURPOSE:Cooling can reduce clinical symptoms and pain caused by traumatic swelling or fracture of extremities. We obtained subjective and objective measures of the effects of cooling of the eyes after cataract surgery. METHODS:Twenty patients with bilateral cataracts were enrolled in this study. For each patient, an i...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)71171-7
更新日期:1995-03-01 00:00:00
abstract:PURPOSE:To study patients diagnosed with retinal angiomatous proliferation (RAP) based on conventional imaging techniques with phase-resolved Doppler optical coherence tomography (OCT) to detect and localize blood flow in RAP lesions; and to compare these findings to conventional imaging, which are mostly invasive and ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2015.07.026
更新日期:2015-11-01 00:00:00
abstract::We treated nontraumatic ectopia lentis with the irrigation and aspiration method in 30 children and the Keeler/SITE instrument in three. Preoperative visual acuities were 6/21 (20/70) or worse in all patients; postoperatively, visual acuities improved in 29 of the 30 eyes and were 6/18 (20/60) or better in 24 (80%). A...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(81)90354-8
更新日期:1981-01-01 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
abstract:PURPOSE:Although the course of vitreomacular traction syndrome is necessary to treat patients or to establish the value of the surgical technique, little information is available about its course. In this study, we ascertained the natural history of vitreomacular traction syndrome. METHODS:We retrospectively studied 5...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)73813-9
更新日期:1995-01-01 00:00:00
abstract:PURPOSE:Photorefractive keratectomy has the potential to cause transient corneal haze. The purpose of this study was to evaluate the relationship between transient corneal haze as measured by an objective means and high and low contrast visual performance. METHODS:In a prospective study, 44 eyes of 28 patients were ex...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章
doi:10.1016/s0002-9394(01)01003-0
更新日期:2001-08-01 00:00:00
abstract:PURPOSE:To investigate the anatomic and visual outcomes in patients with initial anatomic success after macular hole surgery and with at least 5 years of follow-up. DESIGN:Retrospective, noncomparative, consecutive case series. METHODS:Medical records of all patients who underwent surgery for idiopathic full-thicknes...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(02)02240-7
更新日期:2003-05-01 00:00:00
abstract:PURPOSE:To determine the incidence of developing an idiopathic full-thickness macular hole in fellow eyes that have vitreofoveal attachments and perifoveal vitreous detachment in patients with unilateral idiopathic macular hole. DESIGN:Retrospective cross-sectional observational study. METHODS:The fellow eyes of 201 ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2005.03.070
更新日期:2005-09-01 00:00:00
abstract::Digital A-scan ultrasonography provided a digital display of intraocular distances with an overall accuracy of 0.05 mm. Since the control setting was easy and calibration was unnecessary, the time of measurement is reduced and hence the apparatus is useful in clinical practice. ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(77)90628-6
更新日期:1977-02-01 00:00:00
abstract:PURPOSE:To report a case of pityriasis rubra pilaris (PRP)-induced bilateral lower eyelid cicatricial ectropion that resolved with systemic low-dose methotrexate. DESIGN:Observational case report. METHODS:A retrospective case review of a patient with cicatricial ectropion caused by PRP. RESULTS:A 82-year-old female ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2006.11.038
更新日期:2007-04-01 00:00:00
abstract:PURPOSE:Distance stereoacuity is used to monitor deterioration of intermittent exotropia (IXT), but variability of stereoacuity has not been studied rigorously. The purpose of this study was to assess the variability of stereoacuity over one day in children with IXT. DESIGN:Prospective cohort study. METHODS:Twelve ch...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2007.10.028
更新日期:2008-03-01 00:00:00
abstract::To establish the enzyme defect in gyrate atrophy, we measured the activity of ornithine aminotransferase in phytohemagglutinin stimulated lymphocytes in a patient with gyrate atrophy, her daughter, and three normal controls. The patient's cells had no detectable ornithine aminotransferase activity and the daughter's c...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)75948-3
更新日期:1978-02-01 00:00:00
abstract::Of 59 patients with traumatic hyphema studied prospectively, 32 received aminocaproic acid, an antifibrinolytic agent, to prevent secondary hemorrhage. The remaining 27 patients received placebo in an identical manner. Of the aminocaproic acid-treated patients, only one (3%) rebled, while nine patients (33%) receiving...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0002-9394(76)90254-3
更新日期:1976-03-01 00:00:00
abstract:PURPOSE:To describe the histologic development of the human central retina from fetal week (Fwk) 22 to 13 years. DESIGN:Retrospective observational case series. METHODS:Retinal layers and neuronal substructures were delineated on foveal sections of fixed tissue stained in azure II-methylene blue and on frozen section...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2012.05.007
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:To demonstrate that hairy cell leukemia may involve the eye. METHODS:We examined a patient who had a unique ocular manifestation of hairy cell leukemia with severe panuveitis in one eye and leukemic retinopathy in the fellow eye. RESULTS:Therapy with 2-chloro-deoxy-adenosine, a drug recently introduced for tr...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)70543-4
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:To determine the population-based incidence and cause of cranial nerve palsies affecting ocular motility in children in the circumscribed population of Olmsted County, Minnesota. METHODS:The Rochester Epidemiology Project medical records linkage system captures virtually all medical care provided to Olmsted Co...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(98)00424-3
更新日期:1999-04-01 00:00:00
abstract:PURPOSE:To estimate incidence of age-related macular degeneration (AMD) by subtype in American whites aged ≥50 years. DESIGN:Systematic review and meta-analysis. METHODS: SETTING:Prospective cohort studies of AMD incidence in populations of white European ancestry published in MEDLINE, EMBASE, and Web of Science. S...
journal_title:American journal of ophthalmology
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.ajo.2015.04.003
更新日期:2015-07-01 00:00:00
abstract::We made 344 stereoacuity determinations (Titmus Stereotest) on 321 children, ages 1 1/2 to 13 years, who had normal binocular single vision tested by other factors. The data showed a gradual improvement in stereoacuity scores with increasing age--up to age 9--when a normal stereoacuity of 40 seconds of arc was consist...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(75)90679-0
更新日期:1975-06-01 00:00:00
abstract:PURPOSE:To assess low-contrast visual acuity (LCVA) after photorefractive keratectomy in relation to ocular higher-order wavefront aberration and corneal subepithelial haze. DESIGN:Prospective, cross-sectional analysis. METHODS:Photorefractive keratectomy was performed in 51 eyes of 27 subjects with myopic refractive...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2004.06.015
更新日期:2004-10-01 00:00:00
abstract::In seven eyes of six patients (four men and two women, 55 to 72 years old), with macular edema associated with severe carotid artery stenosis, the ipsilateral carotid obstruction was 90% or more. Concomitant fundus signs, such as midperipheral retinal hemorrhages, retinal arterial narrowing, and neovascularization of ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(86)90071-1
更新日期:1986-10-15 00:00:00
abstract::We studied the use of human retinal pigment epithelial cells cultured on a collagen support as a potential transplantation therapy to replace diseased or damaged retinal pigment epithelium. Using a transvitreal approach, we transplanted human retinal pigment epithelial cells attached to either a sheet of noncross-link...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/s0002-9394(14)73079-x
更新日期:1994-02-15 00:00:00
abstract:PURPOSE:To evaluate the long-term risk of endothelial rejection, graft survival, and associated factors following penetrating keratoplasty (PK) for keratoconus, with and without prior resolved corneal hydrops. DESIGN:Retrospective cohort study. METHODS:Primary outcome measures were endothelial rejection-free survival...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2016.07.001
更新日期:2016-09-01 00:00:00
abstract:PURPOSE:To assess the optic nerve head (ONH) by optical coherence tomography (OCT), confocal scanning laser ophthalmoscopy (CSLO), and the retinal nerve fiber layer (RNFL) by OCT and scanning laser polarimetry (GDx) in highly myopic subjects. DESIGN:Observational cross-sectional study. METHODS:Thirty-five eyes of hig...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2006.05.022
更新日期:2006-11-01 00:00:00
abstract::A study of ten patients (six girls and four boys ranging in age from 17 months to 9 1/2 years) with congenital third nerve palsies showed that not all cases are benign without other signs of focal neurologic damage. Six of the ten children showed some degree of pupillary involvement, five had signs of oculomotor synki...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(84)90629-9
更新日期:1984-03-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy and safety of transpupillary thermotherapy (TTT) for subfoveal neovascularization (SRNVM) in patients with group 2A Idiopathic Juxtafoveolar Telangiectasis (IJFT). DESIGN:Nonrandomized interventional case series. METHODS:We performed TTT for subfoveal SRNVM in 14 eyes of 13 patients w...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2004.01.047
更新日期:2004-07-01 00:00:00
abstract::A self-retaining contact lens for slit-lamp examination and photocoagulation treatment of the posterior fundus afforded a wide-angle view of the retina and allowed freedom of both hands of the examiner. ...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(76)90139-2
更新日期:1976-05-01 00:00:00
abstract::We re-assessed nine patients (aged 2 to 28 years) in whom true Brown's syndrome had been diagnosed and superior oblique muscle tenotomy performed. The postoperative period ranged from three to 12 years. The final results were divided into three groups: (1) Patients with partial residual Brown's syndrome postoperativel...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/0002-9394(80)90173-7
更新日期:1980-06-01 00:00:00
abstract:PURPOSE:To examine changes of select reduction-oxidation (redox) sensitive proteins from human donor retinal pigment epithelium (RPE) at four stages of age-related macular degeneration (AMD). DESIGN:Experimental study. METHODS:Human donor eyes were obtained from the Minnesota Lions Eye Bank and graded using the Minne...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2006.12.006
更新日期:2007-04-01 00:00:00
abstract:PURPOSE:To determine whether a three-year fluocinolone acetonide sustained drug delivery system can be implanted safely at the same time that phacoemulsification and intraocular lens (IOL) implantation are performed for a visually significant cataract in eyes with uveitis. DESIGN:Retrospective, single-center case seri...
journal_title:American journal of ophthalmology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ajo.2008.05.035
更新日期:2008-10-01 00:00:00
abstract:PURPOSE:To evaluate visual and optical quality of the implantable collamer lens for different powers and sizes of incision surgery. DESIGN:Prospective study in humans. METHODS:An adaptive optics visual simulator was used to measure 3 powers of implantable collamer lenses and simulate the implantable collamer lens wav...
journal_title:American journal of ophthalmology
pub_type: 杂志文章
doi:10.1016/j.ajo.2012.09.031
更新日期:2013-03-01 00:00:00