Biomedical subjects

E Mrukwa

Publications and source records attributed to E Mrukwa.

10 recordsLinked to original sources

PubMed1998

[Results of radial keratotomy and photorefractive keratectomy in patients' assessment].

PURPOSE: The aim of the study is the presentation of RK and PRK results in patients' assessment. MATERIAL AND METHODS: Questionnaire forms were sent to 100 patients after RK and 120 after PRK between 12 and 24 months after surgery. Preoperative refractive error in both groups was similar: -6.76 D sph in RK group and(--)-6.25 D sph in PRK group. Questionnaire forms consisted of 12 questions about the decision of operation, its course, possible complications and results. RESULTS: 76 (76%) patients after RK and 94 (78.25%) after PRK answered the questionnaires. 96% of patients after RK and 98.9% after PRK were satisfied with achieved results. 56.4% of PRK and 29% of RK patients answered that healing was painful and very painful. 57% of patients after RK and 49% after PRK complained of complications after surgery (fluctuations of vision, glares). Majority of patients in both groups would accept the procedure again. CONCLUSIONS: Both RK and PRK were positively assessed by the patients, however slightly higher level of satisfaction was in PRK group. There were also fewer complications in this group.

Adult↗

PubMed1998

[The examination of healthy human corneas with confocal microscope].

PURPOSE: The aim of this study was to observe the normal human corneas in vivo, using the Scanning Slit Confocal Microscope "Confoscan P4" (Tomey). MATERIALS AND METHODS: 50 corneas of 25 patients, aged 18 to 45 (mean 26), 10 women and 15 men were examined by means of the Confocal Slit Scanning Microscope. Obtained results were analysed in relation to patients' age and sex. The comparison of right and left cornea in each patient was performed. The structure of the epithelium, stromal keratocytes in the anterior, middle and rear part of the stroma, the pattern of the nerve plexus, the appearance of Bowman's and Descement's membranes and the condition of the endothelium were observed. RESULTS: In the analyzed group of patients there were no differences in the findings between the right and left eye. No age and sex related changes were observed. CONCLUSION: Confocal Scanning Microscope allows for real-time, noninvasive observation of the human corneal cell structure in vivo and is capable of evaluation of corneal morphology and physiology.

Adolescent↗

PubMed1996

[Corneal endothelium after photorefractive keratectomy procedures].

PURPOSE: Corneal endothelium cell density evaluation in refractive surgery. MATERIAL AND METHODS: The corneal endothelium cell measurements by means of specular microscopy before PRK as well as, 1 month and 12 months after PRK procedures in 62 eyes have been performed. RESULTS: No statistically significant difference was found comparing corneal cell density before and after photorefractive keratectomy procedures. CONCLUSION: The excimer laser radiation used for correction of refractive errors is safe for corneal endothelium.

Adult↗

PubMed1994

Respiratory potentials recorded from the human hindbrain.

Using a nasopharyngeal and a neck electrode slow potentials synchronous with respiration were registered. Similar potentials were recorded in a patient with apnoea due to widespread paralysis of the Landry type. The potentials are thought to be of medullary origin.

Action Potentials↗

PubMedDate not supplied

[What is the visual field?].

Eye movements were recorded in the course of visual field determination. The behaviour of the eye is various in different persons, defying any rule, except, contrary to the definition of the visual field, it does not remain immobile but executes one or more saccades. Discussing the results the authors present a new concept of the visual field.

Adult↗

PubMedDate not supplied

[Initial results of myopia correction with excimer laser].

The aim of the study was to demonstrate the efficacy of removal of the corneal tissue from the optical area by means of an excimer laser (Aesculap Meditec MEL-60) by the method of photo-ablation and by obtaining in that manner a change of refraction power of the optic system of a myopic eye. Fifty three corrections of myopia in 46 patients were performed from January 1991 to January 1992. Evaluated was the efficacy of this method i.e. the degree of the obtained correction in the relation to the expected one.

Follow-Up Studies↗

PubMedDate not supplied

[Preliminary report on the use of excimer laser in treating keratoconus].

Operations for the reduction of astigmatism in cases of keratoconus were performed on 10 eyes in 8 patients. Disruption of the continuity of the posterior limitans lamina of the cornea was not observed in either case. In 4 cases the intervention had to be repeated. The period of observation amounts presently 1-3 months.

Astigmatism↗

PubMedDate not supplied

[Use of excimer laser in pterygium surgery].

Primary and recurrent pterygium were excised by means of excimer laser or by a combined method of surgical and laser excision in 45 eyes in 41 patients. In 88.8 p.c. of cases no recurrencies were observed in the period of a 3-12 months.

Follow-Up Studies↗

PubMedDate not supplied

[Two year experience of treating inflammatory conditions of the cornea with the excimer laser].

Abrasion of the pathologically changed corneal epithelium by photo-ablation--by means of an excimer laser--was performed in 183 patients; among them were 55 patients with chronic keratitis, 36 with recurrent keratitis, 69 with corneal ulcerations and 23 cases of unsuccessful conservative treatment after thermal or chemical burns. The efficacy of the treatment was defined in dependence on the attained improvement of the visual acuity and the time of epithelialization of the pathological change.

Adolescent↗

PubMedDate not supplied

[Treatment of bullous keratopathy with excimer laser].

PURPOSE: To evaluate the usefulness of excimer laser photokeratectomy in bullous keratopathy. MATERIAL AND METHODS: Treatment with excimer laser photokeratectomy was performed in 22 eyes with bullous keratopathy which developed after cataract extraction with IOL implantation. RESULTS: During 1 month follow-up a slight improvement of visual acuity, local state improvement and subjective symptoms regression were noted. This state was stable in 14 eyes for 6-12 months, in 8 eyes the recurrence of the disease occurred, but without pain symptoms. CONCLUSION: Excimer laser photokeratectomy does not restore corneal transparency but its benefit in bullous keratopathy is to decrease pain while awaiting for keratoplasty.

Aged↗