[Electronic system for correct head position control after some vitreoretinal surgeries]. / Elektronický systém pro kontrolu správné polohy hlavy po nekterých vitreoretinálních operacích.

Team of authors consisting of vitreoretinal surgeons and biomedical engineers developed and tested an electronic system helping the patients after some vitreoretinal surgeries to keep the recommended head position. The authors describe the principle of this system and its use in clinical practice.

[Calculation of diopter value of the IOL in simultaneous cataract surgery and perforating keratoplasty]. / Výpocet dioptrické hodnoty IOL pri soucasne provedené operaci katarakty a perforující keratoplastice.

PURPOSE: To evaluate the successfulness of intraocular lens (IOL) power calculation and refractive error after the triple procedure. METHODS: During the period 1995-2004, the triple procedure was performed in 51 eyes of 43 patients aged 29-83 years (mean 66 years) with corneal disease and cataract. For the IOL power calculation, the SRK II formula was used. In case of impossibility to measure the keratometry, the data from the other eye, or the value 7.7 mm were used. The donor cornea was punched by trephine with the diameter 0.50 mm (in 88.2% of eyes) or 0.25 mm (in 11.8% of eyes) larger than for the recipient cornea. In 30 eyes (58.8%), the interrupted suture was used, in 21 eyes (41.2%) the running suture was employed. In 33% of eyes, the PMMA IOL was implanted, in 18 eyes (35.3%) the hydrophilic acrylate IOL. The final refraction and visual acuity was evaluated 13 - 24 months (mean, 17.1 months) after the surgery, and always after the suture removal. RESULTS: The best-corrected visual acuity (BCVA) ranged 0.1 - 1.0 (mean, 0.4 +/- 0.2). BCVA 0.5 or better was achieved in 26 eyes (51.0%). The spherical equivalent of postoperative refractive error less or equal to 2 dioptres was achieved in 35 eyes (68.6%) and ranged from 0.0 to 3.6 dioptres (mean, 1.4 +/- 1.1 dioptres). CONCLUSION: According to the final refraction of the eye, the use of our method of IOL power calculation in the triple procedure is satisfying and its results are comparable with results published in the literature.

[Pars plana vitrectomy in treatment of tractional edema of the macula]. / Pars plana vitrektomie jako metoda resení trakcního edému makuly.

We analysed the causes and the consequences of traction macular edema with the possibility of solution of this stage by pars plana vitrectomy with removal of vitreomacular traction and epiretinal macular membranes. An analysis of preoperative and postoperative findings of 4 patients was made. There were found idiopathic epiretinal membranes in 3 cases and vitreomacular traction syndrome in 1 case. We reported postoperative improvement of visual acuity in 3 cases, stabilisation of postoperative state was reached in 1 patient.

[Initial experience with toric intraocular lenses]. / První zkusenosti s torickými IOL.

The aim of cataract extraction with implantation of intraocular lens is the astigmatically neutral result. This neutral cataract incision is reached by the method of phacoemulsification with a small incision and implantation of foldable intraocular lens. In case of preoperative astigmatism is an effective method the implantation of a toric intraocular lens. The authors evaluate the first results of pre and postoperative refraction after implantation of ten toric intraocular lenses.

[Use of permanent intracanalicular silicone plugs in the lacrimal ducts in the treatment of dry eye syndrome]. / Pouzití trvalých intrakanalikulárních silikonových uzáveru odvodných slzných cest pri lécbe syndromu suchého oka.

The authors describe longer than two-year experience with the use of permanent intracanalicular silicone plugs in the treatment of the dry eye syndrome. Between August 1997 and November 1999 the authors selected by means of the test with dissolvable collagen plugs 50 patients to whom permanent silicone intracanalicular plugs were inserted. During the follow up period (1-28 months) no complications were recorded associated with the insertion of permanent intracanalicular silicone plugs.