Abstract:
PURPOSE:The aim of this study was to compare the different calculation methods in large patient collectives, including eyes with extreme axial lengths. METHOD AND MATERIAL:The prediction errors of the Haigis, SRK/T, Hoffer-Q and Holladay formulae and of the OKULIX ray-tracing are compared in 2888 normal eyes implanted with 8 IOL models. The 5 methods are adjusted to zero mean prediction error for each subcolletive implanted with a particular IOL model, in the formulae by variation of the "formula constants" and in the ray-tracing by adjusting the mean anterior chamber depth. 249 short eyes (mean axial length 21.3 mm) are than compared with the same adjusting parameters. Two collectives from two hospitals with very long eyes (59 eyes with mean axial length of 30.4 mm and 50 eyes with mean axial length of 31.4 mm) and two extremely short eyes (16.7 mm and 16.72 mm) of the same patient are additionally included into the investigation. RESULTS:In normal eyes, standard deviations of the mean prediction errors ( approximately 0.59 D), mean absolute errors approximately 0.43 D) and median of the absolute error approximately 0.33 D) do not differ between the five methods. The differences increase with the distance from "normal" eyes and are up to 6 D in the extremely short ones. CONCLUSION:As long as only axial lengths and corneal radii are used as input parameters, the choice of the calculation method appears not to be relevant in the case of normal eyes, because other errors are dominant. Other than the formulae, the ray-tracing method can be applied to non-normal eyes (extremely short or long ones) without bias induced by the calculation method. In particular, additionally measured data such as topography or spatially resolved corneal thickness can be used, e. g., in eyes after refractive surgery.
journal_name
Klin Monbl Augenheilkdjournal_title
Klinische Monatsblatter fur Augenheilkundeauthors
Preussner PR,Hoffmann P,Petermeier Kdoi
10.1055/s-2008-1027966subject
Has Abstractpub_date
2009-02-01 00:00:00pages
83-9issue
2eissn
0023-2165issn
1439-3999journal_volume
226pub_type
杂志文章abstract::Seventy-eight contact lens patients issued with soft HEMA lenses were examined in order to establish reasons for intolerance. The examination was carried out in conjunction with a questionnaire designed to furnish information about the habits of the contact lens patients. Less than 50% of the patients had been advised...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1057272
更新日期:1981-08-01 00:00:00
abstract:BACKGROUND:With a cooperative patient, examination of the optic nerve head using optical coherence tomography (OCT) is fast and easy to perform and facilitates identification and monitoring of different pathological changes in the optic nerve head. MATERIALS AND METHODS:Characteristic findings and scanning options are...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/s-0042-116073
更新日期:2018-01-01 00:00:00
abstract::Thanks to technical advances the surgical options for corneal grafting have been widely expanded in recent years. Promoted by new instruments and techniques for intrastromal dissection a number of variations of lamellar keratoplasty, including descriptive terms and abbreviations have been suggested. This creative chao...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2005-858461
更新日期:2005-08-01 00:00:00
abstract::Iatrogenic damage to the orbital fascial system during strabismus surgery may lead to adherences with resulting problems of motility. To prevent new adherences in revisional surgery, several materials were tried, with varying degrees of success. The authors tested Polyglactin 910, popular as a suture material in strab...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1050257
更新日期:1988-09-01 00:00:00
abstract:BACKGROUND:The present study investigates how often a simultaneous fluorescein and indocyanine green (ICG) angiography had therapeutic consequences and if it is useful as a clinical routine diagnostic tool. PATIENTS AND METHODS:502 consecutive simultaneous angiographies in eyes with exudative macular degeneration were...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2005-858011
更新日期:2005-03-01 00:00:00
abstract::Background The aim of this retrospective study was to evaluate the rotational stability and the refractive outcome of two different toric IOLs. Methods This study included 41 eyes with corneal astigmatism greater than 1.5 diopters (D). All patients underwent surgery in the Department of Ophthalmology at Hietzing Hospi...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0043-100656
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:To investigate the structural basis for functional deficits in infantile strabismus we used a neuroanatomic tracer and a histochemical label to examine the primary visual cortex (area V1) of adult esotropic macaque monkeys. ANIMALS AND METHODS:The animals had developed natural esotropia in the first months ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035162
更新日期:1996-01-01 00:00:00
abstract::Recognizing congenital syphilis in pediatric patients is of utmost importance with regard to therapy. The case of a 5-year-old girl with salt and pepper fundus demonstrates the importance of a thorough family history which led towards the diagnosis of congenital syphilis. This paper stresses the importance of family h...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045820
更新日期:1992-05-01 00:00:00
abstract::Upon utilization of echography one certainly will not be able to detect retinal defects; however, other parameters of retinal detachment which by means of solely optical examination techniques may remain undiagnosed can be evaluated successfully. This concerns not only the diagnosis of retinal detachment alone but als...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1979-03-01 00:00:00
abstract::24 patients with rupturing corneal incisions were observed within 6 years from 1971 until 1976. 19 patients had already had cataract extractions performed by us. This complication occurred in 0.5% of cases. All ruptures were investigated regarding the period of time after the cataract extraction, and possible precipit...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1977-05-01 00:00:00
abstract::Optic neuritis is a frequent neuro-ophthalmological disease in which the diagnosis can be based on just a few symptoms and findings. It is not only important to differentiate from other optic nerve disorders but also to recognise special types of optic neuritis, which is mostly only possible during the course of the d...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/s-0034-1382930
更新日期:2014-11-01 00:00:00
abstract::The assessment of visual field findings is fundamental in neuro-ophthalmological functional diagnostics: By means of perimetry, functional and topodiagnostic considerations in case of unexplained visual loss or suspected lesions of the visual pathway are possible in a non-invasive manner. Repeated examinations allow f...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,评审
doi:10.1055/a-0668-5971
更新日期:2018-11-01 00:00:00
abstract:BACKGROUND:A major focus of our study was to determine the value of postoperative intraocular pressure (IOP) in predicting the outcome of trabeculectomy (TE). PATIENTS AND METHODS:The medical charts of 547 patients undergoing glaucoma filtering surgery at the Department of Ophthalmology of the University of Cologne fr...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2000-10376
更新日期:2000-07-01 00:00:00
abstract:UNLABELLED:In early stages choroidal peripapillary choroidal melanoma may be confused with a choroidal nevus or melanocytoma. CASE REPORT:A 41-year old female was diagnosed having a choroidal nevus in close proximity to the optic nerve head. Unfortunately the patient did not show up for annual review of this lesion. T...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2000-9576
更新日期:2000-12-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy of an intravitreal dexamethasone implant (Ozurdex®) in patients with cystoid macular oedema (CME) suffering from non-infectious uveitis. METHODS:Monocentric, retrospective, single-arm analysis in 49 patients (59 implanted eyes) with inactive uveitis, in whom CME had been unresponsive t...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0042-102058
更新日期:2016-05-01 00:00:00
abstract:AIM:The necessity for routine disinfection of floors between two surgical procedures or disinfection only after visible contamination was assessed in two identical ophthalmological operating theatres equipped with laminar air flow ventilation. METHOD:Over a period of four weeks, one of the two tested operating rooms w...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0029-1245657
更新日期:2010-11-01 00:00:00
abstract:BACKGROUND:Presented is a patient whose history showed that during a hammer-blow on a piece of iron something had flown into his left eye. Clinical investigation revealed a 9-mm long, horizontal, paracentrally located, penetrating corneal wound. Temporally in the same region the iris was torn in its entire width. The l...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2005-857910
更新日期:2005-02-01 00:00:00
abstract::Binocular training with full prismatic correction after the monocular therapy by occlusion brings a further improvement of the visual acuity as well as shown in a study of 29% (138 cases) of 469 selected cases with binocular problems and 43% (260 cases) of about 600 unselected cases of squint actually in treatment in ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1979-09-01 00:00:00
abstract:BACKGROUND:Soft intraocular lenses (IOLs) have been developed to be folded during insertion to allow implantation through a small incision. The surface of the IOL is of great importance in postoperative inflammation and long-term acceptance of the implant. Rough and sharp edges can damage delicate intraocular tissues. ...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035377
更新日期:1995-10-01 00:00:00
abstract:BACKGROUND:In the light of studies in children which showed no significant changes concerning anterior chamber depth, central corneal thickness and chamber angle width after eye muscle surgery, the aim of this study was to evaluate such changes in adults by means of optical coherence tomography. PATIENTS AND METHODS:U...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-0029-1245748
更新日期:2010-10-01 00:00:00
abstract::In 21 patients with macular hole and retinal detachment a macular buckling procedure was performed including diathermic or cryogenic coagulation. An absorbable fibrin sponge (Fibrospum) was used as a new buckling material, which needs not to be sutured to the sclera at the posterior pole. In comparison to other proced...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1977-08-01 00:00:00
abstract::Basing on the bipolar-coaxial wetfield-diathermy, introduced in microsurgery 1974 by the author, an anterior capsulotomy instrument using a modulated RF-current was published in 1984. In the meantime several patients have been operated successfully with this technique. However, further experimental studies allowed a r...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1045809
更新日期:1992-05-01 00:00:00
abstract:BACKGROUND:Uveitis is a frequent and potentially vision-threatening manifestation of juvenile idiopathic arthritis (JIA). There are only a few population-based studies providing data on the frequency and severity of uveitis. METHODS:Documentation of patients with JIA was collected in a national database. An analysis o...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2005-858753
更新日期:2005-12-01 00:00:00
abstract:BACKGROUND:After consulting the here presented CT-images of the orbit, the question was raised whether the ocular bulbus was really enucleated or the anamnesis was wrong and a lymphoma existed in the orbit. We will therefore discuss a case of a special follow-up after an enucleation with implantation of a "Bangerter Pl...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1035393
更新日期:1995-12-01 00:00:00
abstract:BACKGROUND:Age-related macular degeneration (AMD) is a disease with high social impact that severely hinders the quality of life of the affected patients. The aim of our study is to examine the ultrastructural changes in the choroidal neovascular membranes occurring after the intravitreal administration of Avastin. MA...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 临床试验,杂志文章
doi:10.1055/s-0028-1109429
更新日期:2009-06-01 00:00:00
abstract:BACKGROUND:Proliferative retinopathy is an important cause of vision loss in diabetic patients. Incomplete panretinal photocoagulation (PRP) can lead to recurrent proliferation of new vessels. PATIENTS AND METHODS:We retrospectively analysed the outcome of patients with high risk proliferative diabetic retinopathy (PD...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章,随机对照试验
doi:10.1055/s-0035-1545795
更新日期:2015-04-01 00:00:00
abstract::Forty-six patients with in most cases severe vascular degenerative retinochoroidal circulatory disturbances or with glaucomatous visual field defects were treated with rökan dragées (160 mg/day for four weeks, then 120 mg/day). The following were checked at monthly intervals to determine the degree of success of the t...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:
更新日期:1980-11-01 00:00:00
abstract:CASE REPORT:An eight months old child presented with a "red eye" and a corneal erosion since a week. The parents reported on a "hair" which was invisible most of the time but appeared intermittently at the lid margin. The medical history was otherwise unremarkable. In general anaesthesia, a long structure could be easi...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2003-37582
更新日期:2003-01-01 00:00:00
abstract::Epibulbar osteomas are benign tumors which are usually present at birth. Up to now 39 cases have been described in the literature. In the last three years 4 further cases have been found in the Freiburg, Hamburg, Marburg, and Munich University Eye Clinics. Epibulbar osteomas probably occur more often than is generally...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1057467
更新日期:1980-03-01 00:00:00
abstract:BACKGROUND:Earlier studies in monkeys have shown that latanoprost 0.005% lowers the IOP by improving the uveoscleral Outflow. We wanted to know if this is also the case in the human eye. PATIENTS AND METHODS:We used our new aqueous humor outflow test with 2-nitrophenyl-acetate in 9 healthy human volunteers, mean age 3...
journal_title:Klinische Monatsblatter fur Augenheilkunde
pub_type: 杂志文章
doi:10.1055/s-2008-1034877
更新日期:1998-05-01 00:00:00