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Biomedical subjects

V Krásnik

Publications and source records attributed to V Krásnik.

At least 19 recordsLinked to original sources
PubMed2004

[Pars plana vitrectomy for diabetic pseudophakic macular edema].

PURPOSE: In retrospective study to evaluate the anatomical and functional results of pars plana vitrectomy (PPV) with peeling of the inner limiting membrane (ILM) on pseudophakic eyes with diabetic macular edema. MATERIAL AND METHOD: PPV with peeling of the ILM was performed in 5 eyes (5 diabetic patients) after cataract surgery with posterior chamber intraocular lens implantation. Group of patients enrolled 4 female and one male aged from 44 to 62 years (average 56.2 y.). 2 eyes had undergone focal fotocoagulation previously for clinically significant macular edema. The macular edema was diagnosed by clinical examination and by retinal fluorescein angiography from 3 to 8 months (mean 6 m.) after cataract surgery. Visual acuity (VA) and angiographic changes were monitoring. RESULTS: In pseudophakic eyes with diabetic macular edema that underwent surgery, the angiography documented decrease of hyperfluorescens in all cases. VA improved in 3 eyes (80%) more than +2 lines of Snellen test, stabilized in one eye (20%). VA detoriated in one eye by -1 line of Snellen test. CONCLUSION: Our results demonstrated that PPV with ILM peeling is effective surgical procedure on pseudophakic diabetic macular edema.

Adult↗
PubMed2004

[The therapy for acute acquired syphilitic uveitis].

PURPOSE: In retrospective study (analysis) to report the effectiveness of therapy on anatomic and functional outcomes in patients with acute acquired syphilitic uveitis. DESIGN: Retrospective case-control study. PARTICIPANTS: 3 patients (4 eyes) with symptoms of ocular acute inflammation which occurred in latent stage of syphilis are included in our study. In all patients uveitis was the first clinical symptom of syphilis. METHODS: In all 3 patients the infection of acquired syphilis was diagnosed using specific and non-specific tests for treponemal antibody. In 2 eyes we performed diagnostic and therapeutic pars plana vitrectomy. The management of ocular syphilis in all patients consisted of mega units of aqueous penicillin intravenously or intramusculary, in 2 patients we used the combination with steroids. RESULTS: In 2 eyes with perioperatively obtained material of vitreous (during pars plana vitrectomy) specific treponemal antibody was detected using specific (TPHA) test. In the third patient infection was verified serologically. The final visual acuity of all 4 eyes is better than or equal to 6/12. The visual acuity of one exe is 6/6. CONCLUSION: Uveitis and neuroretinitis may be the first symptom of acquired syphilis in latent stage. Early antibiotic treatment significantly improves anatomical reparation of infection and visual outcomes.

Acute Disease↗
PubMed2003

[Initial experience with the EAS-1000 (NIDEK) anterior segment analyzer].

The analyzer of anterior segment EAS-1000 is one of recently developed diagnostic devices, used for digital photography for the analysis and storage of data about the anterior segment of the eye. The aim of the contribution is to inform the public about possible use of the apparatus in clinical and field practice.

Anterior Eye Segment↗
PubMed2002

[Surgical treatment of traumatic macular holes].

PURPOSE: To review the anatomic and visual outcomes of patients with traumatic macular hole, who underwent vitreoretinal surgery with membrane limitans interna (MLI) removal and using autologous serum. METHODS: The retrospective review consists of 6 eyes of 6 patients with traumatic macular hole, who underwent pars plana vitrectomy with the removal MLI and with using autologous serum. This study includes 4 male and 2 female. Ages ranged from 10 to 34 years and all patients underwent surgery between February 1997 to October 2000. The time between the injury and surgery ranged from 3 days to 3 months. The aetiollogy was 5-times blunt trauma with ball during field games and once it was shot injury. The initial visual acuity and campimetry were recived and anatomical, functional results and campimetry every 3 months after surgery were reviewed. RESULTS: Anatomical closure of the macular hole was achieved in 4 (66.6%) of the eyes (in 1 eye the closure was with pigmented scar). Two patients who have a persistent macular hole, underwent this surgery 2 or 3 months after injury. In all 4 eyes with anatomic closure of the macular hole was reduction of central scotoma. Postoperative Snellen visual acuity improved 3 or mole lines in the 2 eyes. CONCLUSION: Our results suggest that the period between injury and vitreoretinal surgery is very important for final anatomical and functional results after traumatic macular hole.

Adolescent↗
PubMed2001

[Long-term monitoring of visual function after anatomically successful surgical treatment of idiopathic macular holes].

PURPOSE: The purpose of the study is to determine the outcomes of long-term changes and evolution of visual acuity in patients undergoing anatomically successful macular hole surgery. MATERIALS AND METHODS: Into prospective study are enrolled 20 eyes (20 patients). All patients were successfully operated for idiopathic macular hole between September, 1996 and August, 1998. Time of follow up ranged from 20 to 43 months (mean, 29.5). The best corrected visual acuity was examined before operation and every 3 months after surgery. 12 eyes were operated for complicated cataract. The subgroup of 16 eyes was selected from the group of 20 eyes. The subgroup consisted of patients, who in the first examination observed in Watzke-Allen test the interruption of ray of light and there was a central scotoma on the campimetry. These tests were realised before operation and in the 3rd, 9th and 15th months after operation. Fisher's test and Student's t test were used for statistical analysis. RESULTS: Mean corrected visual acuity before operation was 0.21. Best corrected visual acuity was 0.44, reached in the 12th months. Improvement in +2 or more lines was reached in 55%. In 15th and 18th months the mean corrected visual acuity decrease because of the progression of nuclear sclerosis. 12 eyes were operated for complicated cataract. The best corrected visual acuity before and after surgery of idiopathic macular hole was 0.18 respectively 0.39 and improvement in +2 or more lines was reached in 6 (50%) eyes. After surgery of complicated cataract the mean visual acuity was 0.49. Further improvement in +2 or more lines was reached in 2 (16.7%) eyes, together in 8 (66,%) eyes. Statistical analysis (Fischer's tests, Student's t test) was significant (P < 0.05). In the subgroup of 16 eyes, where were followed changes in Watzke-Allen test, the interruption of ray of light was in all 16 (100%) patients. In the 3rd month 6 (37.5%) patients observed interruption of ray of light and other 10 (62.5%) observed deformation in the central part of ray of light. In 9th and 15th months the interruption observed 5 (31.25%) patients. Deformation in 9th and 15th months observed 8 (50%) respectively 5 (31.25%) patients. Gradual decrease of central scotoma observed in the 3rd, 9th and 15th month 10 (62.5%), 13 (81.25%) and 14 (87.5%) patients. During the follow up in 12 (75%) patients was reached total disappearance of central scotoma. CONCLUSIONS: The evolution of visual acuity after anatomically successful surgery of idiopathic macular hole is dynamic, long-standing and continual process. Improvement of visual acuity can be masked by progression of complicated cataract-nuclear sclerosis. Further improvement of visual acuity can be observed after of the surgery complicated cataract.

Aged↗
PubMed2001

[Comparison of ultrasonographic examinations with surgical findings after surgery of idiopathic macular hole].

PURPOSE: In retrospective study to compare echographic features of posterior vitreous face and vitreo-macular region with preoperative findings by pars plana vitrectomy of idiopathic macular hole. MATERIAL AND METHOD: The group includes 27 eyes with idiopathic macular hole. 11 in II. and 16 in III. stage by Gass's classification. The spectrum of identifiable echographic features included: 1. partial posterior vitreous face separation; 2. presence of a pseudooperculum; 3. high spike of posterior vitreous face over the macula and/or optic nerve head and 4. combination of these findings, eventually some other pathology of vitreous. Peroperative clinical findings included: 1. presence of a pseudooperculum; 2. facility of elevation and separation of posterior vitreous face. RESULTS: The echographic findings showed: 1. 5-times (18.5%) partial posterior vitreous face separation; 2. 5-times (18.5%) the presence of a pseudooperculum; 3. 4-times (14.8%) the high spike of posterior vitreous face in front of the retinal surface spike; 4. 10-times (37.0%) the combination of 1. -3. and/or some other pathology of vitreous. 3 eyes (11.2%) were without relevant pathologic echographic findings. Preoperatively was 1. the presence of a pseudooperculum confirmed in 9 eyes (33.3%). 6-times (22.2%) the posterior vitreous face had separated by core vitrectomy, no active elevation was needed. In 21 eyes (77.8%) the active elevation of posterior vitreous face was performed, 6-times (28.4%) was the elevation more difficult. CONCLUSION: Echographic features of posterior vitreous face and vitreomacular region correlate with preoperative findings by pars plana vitrectomy and determine a strategy of surgical intervention.

Aged↗
PubMed2000

[Intraocular foreign bodies in the posterior eye segment].

BACKGROUND: A penetrating eye injury due to an intraocular foreign body (IOFB) may result in a poor vision and even in loss of the eye. A proper analysis of the cause of injury and of the injured eye enables a correct decision to be made concerning timing and method to be used not only for foreign body removal but also concerning of all sight saving surgical procedures. PATIENTS AND METHODS: Over the years 1989-1993, 51 patients with an IOFB in the posterior segment of the eye were treated at the Department of Ophthalmology of the Comenius University in Bratislava. One patient was lost from the long-term observation and in two patients was an intraocular foreign body not removed. We evaluate results in 48 patients. The operative techniques used by foreign body removal and by reoperations are mentioned. The occurrence of peroperative and postoperative complications and the final anatomical and functional results are evaluated. An average follow-up period was 40.7 months. The value of the following prognostic factors was considered in relation to the final visual acuity: size and location of the laceration of the eye, size of IOFB and time of IOFB removal. The statistical significance was tested by Chí-square. Fischer's coefficient for tetrachoric tables was used for the calculation of power of dependence. RESULTS: The foreign body was removed from 64.6% of the eyes after pars-plana vitrectomy. Foreign body caused serious damage of the intraocular structures in 37.5% of the eyes. The poor anatomical result was achieved in 18 (37.5%) and good in 30 eyes (62.5%). In twelve eyes (25%) was implanted an IOL. The final visual acuity of 6/9-6/6 was achieved in 18 (37.5%) and visual acuity lower than 2/60 was recorded in 21 (43.7%) of the eyes. The prediction of bad visual acuity (lower than 2/60) was significant related to: all lacerations except of corneal wounds smaller than 4 mm, IOFB size exceeding 3 x 2 mm. CONCLUSIONS: Management of retained intraocular foreign bodies should be individual and is dependent on the extent of the initial injury and the characteristics and location of the IOFB. The final outcome depends mostly on the extent of the primary injury and of the occurrence of the peroperative and postoperative complications.

Adolescent↗
PubMed2000

[Problems in diagnosis of intraocular foreign bodies in the posterior eye segment].

BACKGROUND: To evaluate the application of the available diagnostic procedures in intraocular foreign bodies impacted in the posterior segment of the eye. MATERIALS AND METHODS: Between 1989-1993 were treated 51 patients and between 1994-1998 were treated 74 patients with intraocular foreign bodies in the posterior eye segment at the Department of Ophthalmology, Medical faculty of the Comenius University in Bratislava. It was evaluated: time of the first medical examination, cause of the injury, time of the right diagnostic and used ancillary testings. In the second period (prospective study) was evaluated also foreign body trajectory in the posterior segment of the eye. The influence on the final visual acuity was evaluated in no proper diagnosed patients. RESULTS: 50.9% of patients in the first period and 55.9% of patients in the second period were injured while at work. Foreign body was metallic in 96% and 94.7% respectively. In the first period 12 patients were injured by various explosions and in the second period 16 patients were injured by working with some circulating tools. The most common ancillary testing was plain film testing and Comberg localisation. In the second period was intraocular foreign body trajectory defined as indirect in 24 eyes (32%). The foreign body achieved its final intraocular position after simple or double contact with the retina. Foreign body was unproperly diagnosed in 14 patients. The final visual acuity was negative influenced by this fact in 8 patients. CONCLUSIONS: A history and ocular examinationare are still most important in diagnosis of the penetrating eye injury with intraocular foreign body. The basic ancilary testing is simple plain film. Ultrasonography is helpful in diagnosis of other intraocular pathological changes. In justified cases is also possible to perform computed tomography. The peroperative intraocular diagnostics is very important for treatment of the all injured intraocular structures.

Adult↗
PubMed2000

[Age-related macular degeneration in fluoroangiographic findings].

Age-related macular degeneration has become the leading cause of severe visual loss in people over 60 years of age. The authors are reporting on characteristic fluorescein angiography findings obtained by fluorescein angiography of patients with age-related macular degeneration diagnosis.

Aged↗
PubMed1999

[Surgical treatment of macular hole and maculopathy associated with optic disk pits].

PURPOSE: To inform about the successful surgical treatment of the retinal detachment of the macula and macular hole, as a complication of the optic disc pit. PATIENT: The authors report about 32 years old patient with optic disc pit complicated with the retinal detachment and the macular hole. After pars plana vitrectomy with intraocular gas injection (20% C3F8) associated with the application of the autologous serum and follow up face down positioning, the retinal attachment of the macula and the closure of the macular hole were present. In the period 9 months after the operation the relapse of the retinal detachment was observed and the closure of the macular hole is still remained. Condition was treated by intraocular gas injection (1 ml C3F8) and argonlasercoagulation. During the period of more than a 13 months after the first operation and 5 months after the reoperation the retina is attached and the macular hole is closed. In campimetry, a detailed development of the central scotoma is documented. The final visual acuity with correction is 6/9, that is improvement in 3 lines in comparison to preoperative condition. CONCLUSION: The surgical treatment of macular hole by optic disc pit is currently the methods of choice. Using this methods successful anatomical as well as functional results could be obtained.

Adult↗
PubMed1998

[5-years' experience with transvitreal extraction of subretinal neovascular membranes].

Over the period between June 1992 and November 1997, 15 subretinal neovascular membranes were removed in the Department of Ophthalmology of the Comenius University in Bratislava. The age of patients ranged between 57 and 72 years. In 13 patients the membrane was caused by age-related macular degeneration, in one patient the cause was choroiditis of unclear etiology and in one patient the membrane was caused probably by age related changes combined with myopic changes in the macular region. In three eyes only subretinal membrane was present. In all other eyes were also subretinal haemorrhages, hemophthalmus, or retinal detachment present. The visual acuity ranged between light perception and 1/50. After membrane removal the retina was tamponated by silicone oil in 10 eyes and by expanding gases in four eyes. In one eye peroperatively occurred profuse bleeding from choroidal vessels and this procedure was interrupted. The follow-up period ranged form 5-52 months. During this period in nine patients were performed additional 12 surgical procedures. The visual acuity achieved is 0 in three eyes and in other eyes it ranged between hand movement and 5/50. Two eye atrophied. In one eye retinal detachment is present. Three eyes are still filled with silicone oil. In two of them the tamponade will be probably permanent. In nine eyes large areas of retinal pigment epithelium atrophy are present and in two eyes also subretinal fibrous membranes are present.

Aged↗
PubMed1998

[Ultrasonic diagnosis of retinal detachment after internal tamponade with silicone oil].

The authors evaluate the results of ultrasound examination of 20 patients with retinal detachment (20 eyes) after pars plana vitrectomy with silicone oil tamponade. Ultrasound diagnostic method is necessary in cases with non-transparent optic media. Silicone oil in the space of vitreous cavity has a character of a swimming water-drop and his physical properties can change the echography results. Between the eye-wall and silicone oil is a virtual space, which could be well visualised by ultrasound. The patients are divided into 2 groups. In the 1st group there were 7 eyes with transparent optic media and retina was detached under the silicone oil. By ultrasound the retina detachment echo was localised between the echos of silicone oil and eye wall. In the 2nd group there were 13 eyes with non-transparent optic media. In 6 cases (41.6%) the retinal detachment echo was visualised. The retinal detachment was confirmed by vitreo-retinal surgery.

Adult↗
PubMed1996

[Evaluation of circulatory flow in vessels of the eye and orbit using color duplex ultrasonography].

Duplex ultrasonography is recent imaging, that allows simultaneous 2-dimensional imaging (B-scan) and Doppler evaluation of the blood flow. Information on blood flow is obtained by pulsed Doppler spectral analysis. The blood flow in vessels of our interest is colour coded. Using this technique we examined 140 eyes. 81 eyes in 48 healthy persons were examined. Based on this examinations, the blood velocity standards were calculated for age groups 19-40 and 41-76 y. There are demonstrated pathologic findings by intraocular tumor, tractional retinal detachment and various failures of blood flow in bulbar and orbital vessels.

Adult↗
PubMed1995

[Use of the DK-Line OPSIA liquid perfluorocarbon].

Since May 1993 to February 1995 we have used "DK-LINE" OPSIA in 137 patients in whom were 161 procedures on 141 eyes performed. It was used in 116 retinal detachments, 29 of them were posttraumatic. 28x in the eyes with proliferative diabetic retinopathy, 8x by injuries of the posterior segment of the eye, 5x in dislocated lenses and 3x by the removal of subretinal membranes. At the end of retinal detachment surgery was retina attached in 94.2%. Peroperatively we recorded subretinal migration of PFCL in 16 cases. 13x was removed peroperatively and 3x later by the reoperations. In three aphakic eyes we recorded postoperatively small bubble of PFCL at the bottom of the anterior chamber. From two of them was fully removed by paracenthesis and from the third by the reoperation. Only 1x we used an internal tamponade in duration of 5 day. We recorded serious sero-fibrinous exudation in the anterior chamber and in the vitreous cavity over the level of PFCL.

Fluorocarbons↗
PubMed1995

[Ultrasonic imaging of the anterior segment of the eye].

Our survey of the anterior segment of the eye by the ultrasound, is based in the usage of the Kitecko, the eye covering gadget, made by Laboratories 3M. The Kitecko opened a new possibilities for us in the localization of the intraocular, RTG noncontrast foreign bodies of the anterior segment, as well obscure optical medium.

Anterior Eye Segment↗
PubMed1994

[The CT image of the eyeball after pars plana vitrectomy using silicone oil for internal tamponade of the retina].

Cerclage and silicon oil induce significant changes in the CT image after the vitreous and the retina microsurgery. It is important to get to know the right estimation of the CT image. Cerclage has mainly effect on characteristic shape changes of eyeball. Hyperdensity shadow of the vitreous cavity in the CT image of the eye after silicon oil tamponade creates different physical quality among silicone oil, vitreous and aqueous humor.

Adolescent↗
PubMed1994

[Effective extraction of intraocular foreign bodies].

In 39 patients was removed an intraocular foreign body in the years 1989-1991. 12 of them in the anterior segment of the eye, 14 in the vitreous body, 11 in the retina and 2 in the posterior part of the sclera. From the anterior segment were all bodies removed with forceps. From the vitreous body and the retina were foreign bodies removed mostly by forceps after previous vitrectomy. Functionally the worst results were achieved in foreign bodies where pre-, or peroperatively retinal detachment was present. Visual acuity under hand movement was present in 12 eyes.

Adolescent↗