Biomedical subjects

R Boldea

Publications and source records attributed to R Boldea.

3 recordsLinked to original sources

PubMed2006

[Binocular diplopia after cataract operation].

BACKGROUND: The development of binocular diplopia after cataract surgery is a serious complication. The present retrospective study aims to improve our understanding of this phenomenon and its prevention. PATIENTS AND METHODS: A series of 11 patients with binocular diplopia after cataract surgery under local retrobulbar anaesthesia is presented. The patients were followed over a period ranging from 1 to 31 months. RESULTS: Three types of disorders were found: muscular or nervous injuries (7/11), decompensated latent heterophorias (2/11), and disclosed previous strabismus with abnormal retinal correspondence (2/11). The treatment was surgical for 3 patients, and a prismatic correction was prescribed for 6 patients. Spontaneous recovery was seen in 5 patients. CONCLUSION: Fortunately, binocular diplopia after cataract surgery is a rare complication, with multiple aetiopathologies. Muscular injuries, related to the anaesthesic technique, are the most frequent disorders responsible for diplopia and often require strabismus surgery.

Aged↗

PubMed2001

[Analysis of filtration according to implant type after deep sclerectomy in the rabbit].

PURPOSE: The purpose of this study was to compare the aqueous humor outflow using three type of implants after deep sclerectomy. A numeric imaging system with ICG and fluorescein angiography was used. The evolution over time was recorded, while filtration and outflow facility were measured. MATERIAL AND METHODS: Numeric imaging system with ICG and fluorescein angiography were performed before and after deep sclerectomy at regular intervals after surgery. Both resorbable (collagen) and non-resorbable (hema) intrascleral devices have been tested in eight rabbits. The resorption time of the collagen implants has been monitored using UBM technique. The outflow facility was measured with the technique of anterior chamber canulation and constant pressure method. RESULTS: The resorbable collagen implants could be observed with UBM and angiography during the first six weeks post-operatively. The image of the non-resorbable Hema implant remained clearly visible over time. New drainage vessels were observed around the filtering bleb. The filtration significantly increased as the outflow facility improved after surgery, while the intraocular pressure remained stable over time. CONCLUSION: This conjunction of UBM, angiography and outflow measurement allowed us to study and compare three types of implants used as space maintainer after deep sclerectomy, and analyse their effect on the aqueous filtration and outflow facility.

Animals↗

PubMed2000

[Aqueous outflow pathway imaging in the rabbit with fluorescein and indocyanine green].

PURPOSE: The purpose of this study was to visualise the rabbit aqueous outflow pathway using a numeric imaging system with ICG and fluorescein injection in the anterior chamber. MATERIAL AND METHODS: We performed a simultaneous injection of Indocyanin Green (ICG) and Fluorescein into the anterior chamber of rabbit eyes. Using a digital camera, we took several sequenced pictures to visualize the distribution of the dyes within the outflow pathway. We observed the dynamics of the outflow over time. RESULTS: In the early phases, the shape of the outflow canal around the limbus was clearly seen. Several collecting veins close to the recti muscles were also identified. There was only slight fluorescein leakage during the early phases, allowing adequate visualization of the morphology of the outflow system. In the late phases, the sclera was stained with the fluorescein, and no details were thus visible. The ICG dye allowed better recognition of the fine details of the outflow structure. CONCLUSION: This method was relatively simple, safe and precise, and allowed us to visualise the details of the outflow pathways in the rabbit eyes. These results could be of great value in further evaluating the outcome of filtering surgeries in animal models.

Angiography↗