PubMed Health⌕ Search

Biomedical subjects

D Baráková

Publications and source records attributed to D Baráková.

At least 19 recordsLinked to original sources
PubMed2003

[Correlation of ultrasound and biopsy measurements of the size of intraocular tumors].

The authors investigated the relationship between ultrasonic assessment of tumour size (in vivo) and bioptic examination (in situ) in 52 patients with the diagnosis of a uveal melanoma where enucleation of the eyeball was indicated and performed. The patients were treated at the Ophthalmological Department of Vinohrady Faculty Hospital in 1992 to 2001. The period between the last echographic examination and the subsequent enucleation of the eyeball did not exceed one month (15 +/- 9 days). The authors investigated the maximal height of the tumour (prominence) and maximal diameter of the base of the tumour (so-called LTD-large tumour diameter) by ultrasound and bioptic measurement. They also assessed the mean prominence of the tumour and the mean diameter of its base. The results were compared statistically by the t-test. The difference between mean values of tumour prominence in the two types of assessment was not statistically significant at the 10% level of significance (t = 1.4; p > 0.10), the difference between mean values of the diameter of the base made by the two measurements is statistically significant at the 5% level of significance (t = 2.1, p < 0.05).

Biopsy↗
PubMed2003

[Echographic findings in posterior scleritis].

In the submitted paper the authors present an account on the importance of ultrasonographic examination by the method of standardized echography for early and correct establishment of the diagnosis scleritis posterior. They mention the echographic image of posterior scleritis and the specific acoustic criteria which are important from the aspect of the differential diagnosis. They analyze differences of the echographic image in posterior scleritis, melanoma of the choroid, metastatic carcinoma of the choroid and haemangioma of the choroid. When knowing the specific acoustic criteria the success rate of diagnosing posterior scleritis is high. The diagnosis is important for provision of adequate treatment and prevention of ophthalmological complications. Standardized echography is a non-invasive examination method suitable not only for assessment of the diagnosis of posterior scleritis but also for check-up examinations and follow up of the effectiveness of therapy.

Adult↗
PubMed2003

[Angiolymphoid hyperplasia with eosinophilia or Kimura disease?].

Angiolymphoid hyperplasia with eosinophilia (ALHE) and Kimur's disease are two rarely occurring and mutually very similar, yet independent nosological units. For the frequency of similar features these diseases were long considered to be modifications of one disease. In the last years most authors considered these diseases to be independent entities with certain specific clinical and morphological features. The case of a 76-year white man, suffering from occurrence of subcutaneous tumor formations in various part of the body for the period of six years, is described. Six years after the first signs of the disease, swelling of eyelids on the right eye with palpable resistance under the upper temporal margin of eye socket developed. A similar finding also developed on the left side eight months later. The tumors were removed by surgery and subjected to histological examination. One year later a unilateral relapse developed to be again subjected to surgical treatment and histological examination. In the first two orbital excisions the tumor infiltrate was in topical connection with structure of the tear gland, the third excision did not contain such structures. The histological diagnosis was established as ALHE in spite of some common features with the Kimur's disease. The diagnosis of ALHE was especially supported by absence of the formation of lymphatic follicles, absent fibrotization in the infiltrate and epithelium-like or even histiocyte-like appearance of proliferating endothelia, which formed minute vascular lumina. A substantial exceptionality in the occurrence of the Kimur's disease in white Europeans further supported the diagnosis of ALHE. Our own experience indicates that both units mutually overlap even in features considered to be of distinctly different character. A question arises, whether the strict division of these two nosological units is really possible in practice with unequivocal certainty.

Aged↗
PubMed2002

[Implantation of the AcrySof MA30BA lens using the Monarch system].

The authors describe experiences with implantation of the intraocular lens AcrySof MA30BA by the Monarch IOL delivery system. They consider the facility of Monarch's system completion, the location of the lens in the cartridge and its folding, lens passage through the cartridge and its expansion intraocculary. The authors evaluate the width of incision necessary for the conduction of injector, preoperative and postoperative course, final visual acuity and inducted astigmatism. The results of the work show that implantation of the lens AcrySof MA30BA by the IOL Monarch delivery system is easy and safe. The width of incision after implantation performs criterion of the no stitch technique and corresponds contemporary requirements of the modern cataract surgery of small incision.

Adult↗
PubMed2001

Causes of severe visual impairment and blindness in children attending schools for the visually handicapped in the Czech Republic.

AIMS: To describe the causes of severe visual impairment and blindness in children in schools for the visually handicapped in the Czech Republic in 1998. METHODS: Pupils attending all 10 primary schools for the visually handicapped were examined. A modified WHO/PBL eye examination record for children with blindness and low vision was used. RESULTS: 229 children (146 males and 83 females) aged 6-15 years were included in the study: 47 children had severe visual impairment (20.5%) (visual acuity in their better eye less than 6/60), and 159 were blind (69.5%) (visual acuity in their better eye less than 3/60). Anatomically, the most affected parts of the eye were the retina (124, 54.2%), optic nerve (35, 15.3%), whole globe (25, 10.9%), lens (20, 8.7%), and uvea (12, 5.2%). Aetiologically (timing of insult leading to visual loss), the major cause of visual impairment was retinopathy of prematurity (ROP) (96, 41.9 %), followed by abnormalities of unknown timing of insult (97, 42.4%), and hereditary disease (21, 9.2%). In 90 children (40%), additional disabilities were present: mental disability (36, 16%), physical handicap (16, 7%), and/or a combination of both (19, 8%). It was estimated that 127 children (56%) suffer from visual impairment caused by potentially preventable and/or treatable conditions (for example, ROP, cataract, glaucoma). CONCLUSIONS: Establishing a study group for comprehensive evaluation of causes of visual handicap in children in the Czech Republic, as well as for detailed analysis of present practice of screening for ROP was recommended.

Adolescent↗
PubMed2001

[Echography findings in orbital myositis].

In a retrospective study comprising 12 patients with the diagnosis or orbital myositis the authors present an account on the importance of standardized echography for the differential diagnosis and for the follow-up of the disease in relation to treatment. They describe the sonographic finding in affected oculomotor muscles and in myositis of the upper oblique muscle incl. the echographic finding of trochleitis. The authors discuss echographic signs of myositis (thickness and shape of muscle, reflectivity and internal structure) in image A and image B and their correlation with the histopathological finding. The authors discuss differential diagnostically important differences of the echographic picture of myositis, endocrine myopathy and others.

Adult↗
PubMed2001

[Ultrasonography of choroidal melanoma].

The authors discuss the use of standardized echography in the diagnosis of melanoma of the choroid. They mention the investigated acoustic criteria in images B and A (shape, size, limits, site, structure, reflectivity, weakening of the ultrasonic signal, vascularization, mobility, consistence) and their importance for more detailed identification of the tumour. Investigation of the acoustic properties of choroid melanoma and assessment of acoustic criteria for echographic assessment of choroid was based on echographic examination of a total of 109 bulbi where melanoma was confirmed also by histological examination.

Choroid Neoplasms↗
PubMed2001

[Retrospective study of histologically confirmed intraocular tumors at the Eye Clinic of the Vinohrady Faculty Hospital in Prague].

The authors evaluated statistically in a retrospective study the histological findings of a total of 182 intraocular tumours assembled at the Ophthalmological Clinic, Vinohrady Faculty Hospital Prague in 1992-2000. The histological material was obtained from 147 patients by enucleation of the bulbus and in 35 patients by surgical resection. In 97.2% the authors proved the malignant character of the tumour. In 95% an uveal melanoma was involved. In malignant melanomas of the choroid the following parameters were investigated: site, size, histological type, state of Bruch's membrane and extrascleral propagation of tumour. In 67% the melanoma was in the choroid, in 21% in the ciliary body and in 12% in the iris. As to size, large and extremely large melanomas predominated (66%). Histologically melanomas of the mixed and spindle-cell type were most frequent (93%). Bruch's membrane was damaged in 48% melanomas. Transscleral extension of the tumour was present in 9% malignant choroid melanomas.

Eye Neoplasms↗
PubMed2000

[Frequency of secondary cataracts in patients with AcrySof MA30BA and MA60BM lenses].

The authors present an account on the incidence of secondary cataract in AcrySof lenses MA30BA and MA60BM in a group of 65 eyes. The authors selected as criterium for evaluation of secondary cataract the transparency of the posterior capsule in correlation with deterioration of visual acuity and the number of performed Nd:YAG posterior capsulotomies. The follow-up period was 6 to 32 months. The incidence of secondary cataract in AcrySof lenses was 13.8%, the number of performed capsulotomies was 0. These results were compared with the incidence of secondary cataract in PMMA and silicone lenses. The incidence of secondary cataract in eyes with PMMA lenses was recorded in 58.5% and in eyes with a silicone lens in 46.2%. In eyes with a PMMA lens Nd:YAG posterior capsulotomy was performed in 32% and in eyes with a silicone lens in 26%.

Adolescent↗
PubMed2000

[Echographic findings in rhegmatogenous retinal detachment].

Echography of the bulbus is a useful examination method in eyes with a detached retina. It is essential in particular in eyes with opaque optic media, where the result of the ultrasonographic examination is frequently decisive for further therapeutic procedures. The echographic finding in rhegmatogenic detachment of the retina is usually quite typical and it is possible to assess relatively accurately the extent and shape of detachment. From echographic signs also the duration of detachment can be estimated. Ultrasound can also detect and locate a major retinal tear. A very effective method in the differential diagnosis of detachment of the retina is standardized echography of the bulbus.

Diagnosis, Differential↗
PubMed1998

[Comparison of the occurrence of secondary cataracts in silicone and PMMA lenses].

The authors compared the frequency of secondary cataract after implantation of silicone and polymethylmetacrylate lenses (PMMA) in a group of 130 eyes of 100 patients within 12-30 months after surgery of cataract with primary implantation of a IOL. For evaluation of secondary cataract two criteria were used: 1. opacification of the posterior capsule in correlation with deterioration of eyesight after other causes of deterioration were ruled out, 2. the number of performed Nd:YAG posterior capsulotomies (so-called "capsulotomy rate") in the investigated patients. The authors provided evidence of a lower incidence of secondary cataracts in silicone lenses i.e. a lower incidence of opacification of the posterior capsule (46% as compared with 58.5% in PMMA lenses) as well as a lower rate of Nd:YAG capsulotomies (26% as compared with 32% in PMMA lenses). The longer time interval of capsulotomy after implantation (on average by five months) is also in favour of silicone plate-haptic IOL.

Aged↗
PubMed1998

[Chronic postoperative endophthalmitis caused by Propionibacterium acnes].

There is a report of three cases of chronic postoperative endophthalmitis following cataract operations. In two patients there was proven Propionibacterium acnes. There is presented a technique to obtain specimens for microbiological examination and an overview of clinical experience in treatment of the mentioned less common types of endophthalmitis. Early surgical treatment as well as intraocular injection of vancomycin can help to restore a good visual acuity despite of longlasting inflammation.

Aged↗
PubMed1998

[Echographic findings in orbital varices].

An orbital varix is a rare venous affection, its main symptom being intermittent exophthalmus. For the diagnosis of an orbital varix ultrasonic examination of the orbit is a useful examination method. The authors present the ultrasonic finding of three patients with the diagnosis of an orbital varix. The correct diagnosis of an orbital varix can be as a rule established already from the typical clinical picture and echographic finding.

Adolescent↗
PubMed1998

[Echography of carotid-cavernous fistulae].

Arteriovenous shunts belong to less frequent vascular disorders affecting the orbit primarily or secondarily. They comprise in particular arteriovenous malformations, carotidocavernous fistulae and dural arteriovenous fistulae. Most frequently secondary affections of the orbital veins are encountered during the development of a carotidocavernous fistula. In addition to the typical symptomatology a carotidocavernous fistula has also a typical angiographic and echographic finding. The authors present the echographic finding of a dilated superior ophthalmic vein, discuss also other echographic signs in the orbit during the development of a carotidocavernous fistula.

Arteriovenous Fistula↗
PubMed1997

[Induced astigmatism after implantation of Acrysof MA 60 BM and Hydroview H 60 M intraocular lenses].

The purpose was to find an induced corneal astigmatism after cataract surgery. Change in the keratometric cylinder was examined in two ways by the vector analysis according to Jaffe/Clayman and according to Cravy. In the majority of cases we examined excellent visual acuity in only the first week after surgery. Concerning the mean actual keratometric cylinder values for the first eight postoperative months, in both groups induced astigmatism and rotation of cylinder axis was absolutely minimalized.

Astigmatism↗
PubMed1991

[Decentration of posterior chamber intraocular lenses].

In a group of 300 patients with a posterior chamber lens in 19% its decentration was found, in 2.3% the iris capture syndrome. The author discusses possible causes of decentration of the implanted lens, possibilities of its therapy.

Anterior Chamber↗