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Biomedical subjects

G Salacz

Publications and source records attributed to G Salacz.

At least 19 recordsLinked to original sources
PubMed2004

[Refraction and visual acuity after laser coagulation treatment for retinopathy of prematurity in stage 3+].

PURPOSE: Correlations between myopia < or =-4.0 D, birth weight, gestation age at birth, extension of laser photocoagulation and mild posterior pole changes were assessed in eyes of 1-year-old children who underwent laser treatment for stage 3+ retinopathy of prematurity (ROP). In addition the relationship between best-corrected visual acuity (VA) and mild posterior pole alterations was evaluated at 3 years of age. PATIENTS AND METHODS: Patients who underwent argon or diode laser photocoagulation between 1996 and 2000 for ROP 3+ disease were analyzed in this retrospective study. Cycloplegic refraction was determined in 72 eyes of 1-year old patients ( n=39). At 3 years of age cycloplegic refraction was measured in 36 eyes of 19 patients, and visual acuity was determined in 25 eyes of 13 children. RESULTS: Myopia of < or =-4.0 D significantly correlated only with mild posterior pole changes (i.e. clinically significant dragging of the temporal vessels of the retina or macular heterotopia, p=0.001). The correlation was significant between a VA reduction to <0.8 and mild posterior pole alterations ( p=0.014). CONCLUSIONS: The prevalence of myopia < or =-4,0 D and visual acuity <0.8 appears to be increased even with mild posterior pole changes. Birth weight does not seem to be significant factor in the prevalence of myopia < or =-4.0 D following laser coagulation of stage 3 threshold ROP.

Child, Preschool↗
PubMed2001

[Cataract and refractive surgery in Hungary at the turn of the Millennium].

A survey of cataract-, and refractive surgery carried out around the Millennium presents the habits, styles and results of the Hungarian surgeons. There is a significant trend for transition to phacoemulsification procedure, 38 per cent of all cataract surgeries have been carried out with this most modern procedure, and 4/5 of the operating institutes possesses the equipment needed for this operation. The refractive surgeries in Hungary have been carried out in 11 private institutes. The number of these procedures are in close relation with the level of living standards.

Cataract Extraction↗
PubMed2000

A catheter technique in ophthalmic regional anaesthesia. Cadaver experiments.

BACKGROUND: Regional anaesthesia for ophthalmic surgery is generally accomplished by peri- or retrobulbar techniques. Depending on the duration of ophthalmic surgery, reblock might become necessary. Our goal was to invent a catheter technique for ophthalmic regional anaesthesia that enables the user to administer local anaesthetics intraoperatively into the peri- or retrobulbar space continuously. METHODS: Twenty-five adult cadaver orbits of normal size and anatomy were used for the experiments. A flexible catheter was introduced transcutaneously or transconjunctivally into the extra- or intraconal space. Methylene blue solution was injected through the catheter. RESULTS: Using the same transcutaneous retro- and peribulbar technique, it was possible to introduce flexible catheters into a proper position of the cadaver orbits. The injected dye was found intra- or extraconally. CONCLUSION: Examining the spread of the dye in the orbit, we concluded that it is possible to provide ophthalmic anaesthesia for surgery through an indwelling catheter. We proved that continuous or intermittent administration of a local anaesthetic agent into the extra- or inraconal space can be achieved and this technique may allow us to maintain anaesthesia as long as it is necessary.

Anesthesia, Conduction↗
PubMed2000

A catheter technique in ophthalmic regional anaesthesia. Clinical investigations.

BACKGROUND: Usually general anaesthesia is chosen if ophthalmic surgery of longer duration is expected. Our goal was to introduce a flexible catheter preoperatively into the extra- or intraconal space and to provide sufficient anaesthesia by continuous administration of a local anaesthetic via the catheter. METHODS: The continuous anaesthetic technique was applied in 28 patients undergoing vitreoretinal surgery. An indwelling catheter was introduced in 20 patients into the intraconal and in 8 patients into the extraconal space. In 6 patients, the position of the catheter was controlled by ultrasound examination prior to the injection of the local anaesthetic agent. RESULTS: For all patients adequate anaesthesia could be achieved and maintained with continuous retrobulbar administration (CRA) of a local anaesthetic by catheter. There were two patients who experienced moderate pain intraoperatively during continuous peribulbar administration (CPA). No complications occurred with the placement of the catheters. The catheter did not disturb the surgeon or the process of the ophthalmic surgery. CONCLUSIONS: Continuous administration of a local anaesthetic agent via an indwelling catheter into the intraconal space allowed ophthalmic anaesthesia without time restriction. Thus, CRA is a good alternative to general anaesthesia for patients undergoing long-lasting ophthalmic surgery.

Anesthesia, Conduction↗
PubMed1999

[Degenerative diseases affecting vision].

Degenerative-dystrophic disorders threatening the vision may occur in the cornea, in the lens, in the vitreous body, in the retina and in the optic nerve. Corneal degenerative disorders are rare and mainly of hereditary origin. Keratoplasty is a successful therapeutical method. The surgical treatment of cataract is one of the most fruitful field of ophthalmic surgeons even if the development of cataracts is not in every relations understood. Degenerative disorders of the retina are not subjects of successful treatment, though some new therapeutical modalities are promising. Retinal pigmentepithelium-, and neuroepithelium-transplantation and other surgical procedures in age-related macular degeneration are new approaches in previously applied medical treatment modalities. From clinical point of view degenerative disorders of the retina have the most significance as they occur in elderly and have severe social consequences as well. Excessive degenerative myopia may be reduced in selected cases by surgical approaches. Through encouraging results of experimental and clinical research new therapeutical methods were introduced in the everyday praxis, knowledge some of these new methods are worthy for physicians outside the field of ophthalmology as well.

Cataract Extraction↗
PubMed1999

Intraoperative complications in vitreoretinal surgery.

Pars plana vitrectomy is a well developed and widespread used surgical technique with several instruments and special tools for selected vitreoretinal cases. Knowledge of complications during the various steps of the surgical procedure make easier to avoid them. Most important is first to collect experiences with simple cases and to get accustomed to the otherwise special surgical technique that needs good cooperation of the surgeons two hands, two feet and needs steady attention on the tips of the intraocular instruments. However, after certain experience complications will occur because of the complicated cases of proliferative diabetic retinopathy or other vitreoretinal diseases.

Drainage↗
PubMed1992

Postoperative necrotizing sclerokeratitis.

The postoperative necrotizing sclerokeratitis is a rare condition occurring shortly after surgical procedures, mainly following cataract extractions. After several exacerbations and remissions spontaneous scleral perforation may occur. In the described case the conservative treatment/topical antibiotics, corticosteroids/failed, therefore the damaged scleral surface was covered with lyophilized dura and the condition came to a standstill.

Aged↗
PubMed1987

[Cryocoagulation in retinopathy of prematurity].

Transconjunctival cryocoagulation was performed on 38 eyes of 21 premature infants. The eyes were in stages 2-4 of retinopathy of prematurity. In stage 2 cryocoagulation was performed only if there were hemorrhages and/or a dilatation of the retinal vessels or (once) a rubeosis iridis. Cryocoagulation in stage 2, often considered superfluous, was effective in every case, but in stage 3 it was ineffective in many cases.

Cryosurgery↗
PubMed1980

[Ophthalmodynomometry results in central serous retinopathy].

In nine out of 15 eyes with central serous retinopathy verified by fluoroangiography raised Pm. ophth. values were found. The average value of deviations obtained in these 15 eyes was significantly higher than in 30 controls. A possible correlation between central serous retinopathyl and increased peripheral cerebral flow resistance is discussed.

Humans↗
PubMed1976

[Secondary disciform macular degeneration (author's transl)].

The disciform macular degeneration is in rare cases preceded by well-known diseases which have in common the destruction of the Bruch's membrane, recurrent haemorrhages with exudation from the choriocapillaris and later on ingrown of fibrovascular tissue into the subretinal space. The authors report on cases with chorioidal ruptures, vascularlike stripes and focal chorioiditis.

Chorioretinitis↗