ABSTRACT
PURPOSE: To evaluate the safety and feasibility of perfluorocarbon-perfused vitrectomy (PCPV) as a technique during vitrectomy for proliferative diabetic retinopathy (PDR) and rhegmatogenous retinal detachment (RRD). METHODS: In an experimental, prospective, noncomparative and interventional study, 28 eyes of 28 patients were submitted to vitrectomy with the PCPV technique, 18 eyes with PDR and 10 with RRD. In this technique we replaced the traditional balanced saline solution (BSS) in the infusion line (conventional vitrectomy) by perfluorocarbon liquids (PCL). Some patients with PDR were treated with oxygenated PCL. Clinical evaluation, electroretinography (ERG), and endothelial cell count (ECC) were used to assess the safety of this procedure. An arbitrary grading system (grades 0-5) was used to classify the surgery and maneuvers to assess feasibility. RESULTS: No eyes had a significant decrease in ECC, and the patients in whom we could obtain ERG postoperatively showed no significant differences from preoperative ERG. In the PDR group (using oxygenated and nonoxygenated PCL), 77.8% were graded 5/5; in the RRD group 90% were 5/5. PCPV allowed better visualization of vitreous and intraocular structures, rapid retinal reattachment, less blood in the vitreous cavity, subretinal fluid resolution, blood confinement, retinal stabilization, and easier dissection of epiretinal membranes. In all cases at least one surgical step was eliminated. CONCLUSIONS: PCPV in humans is a safe and feasible technique. Probably in selected cases the use of PCL offers several advantages over BSS, because of their properties (gravitational forces, immiscibility with bodily fluids, and ability to transport oxygen). Prospective and comparative studies are necessary to establish formal indications and possible contraindications.
Subject(s)
Diabetic Retinopathy/surgery , Fluorocarbons/administration & dosage , Retina/pathology , Retinal Detachment/surgery , Vitrectomy/methods , Adult , Aged , Diabetic Retinopathy/pathology , Diabetic Retinopathy/physiopathology , Electroretinography , Feasibility Studies , Female , Follow-Up Studies , Humans , Infusion Pumps , Male , Middle Aged , Ophthalmic Solutions , Prospective Studies , Retina/physiopathology , Retinal Detachment/pathology , Retinal Detachment/physiopathology , Treatment Outcome , Visual Acuity , Vitrectomy/standards , Young AdultABSTRACT
OBJECTIVE: To report the clinical and tomographic findings in a case of maculopathy secondary to high-tension electric current strike. CASE REPORT: A 27-year-old male refers a reduction in his visual acuity after electric strike. Visual acuity was 0.05 in both eyes. Circular reddish macular lesions measuring 400 micro m in RE and 200 micro m in LE were evident. Optical coherence tomography (OCT) showed intraretinal foveal cysts. At the third month follow-up visit, visual acuity had improved to 0.4 in RE and 0.5 in LE. Clinical and tomographic evaluation showed a reduction of the foveal cysts. DISCUSSION: Electricity affects retinal pigment epithelium and retina by thermal denaturation. OCT provides a conclusive diagnosis.
Subject(s)
Electric Injuries/complications , Eye Injuries/etiology , Macula Lutea/injuries , Macular Edema/etiology , Adult , Fundus Oculi , Humans , Macula Lutea/pathology , Macular Edema/diagnosis , Macular Edema/therapy , Male , Tomography, Optical Coherence , Treatment Outcome , Visual AcuityABSTRACT
Objetivo: Reportar hallazgos clínicos y tomográficos de maculopatía por descarga eléctrica. Caso Clinico: Paciente varón, 27 años con disminución visual tras descarga eléctrica. Agudezas visuales de 0,05 en ambos ojos. Lesiones maculares circulares, rojizas, de 400 µm en OD y 200 µm en OI. Tomografía óptica coherente demostró lesiones foveales quísticas intraretinianas. A los 3 meses la agudeza visual mejoró a 0,4 en OD y 0,5 en OI con reducción de los quistes foveales clínica y tomográficamente. Discusión: La electricidad afecta el epitelio pigmentario y retina externa por desnaturalización térmica. La tomografía es concluyente para el diagnóstico (AU)
No disponible
Subject(s)
Adult , Male , Humans , Treatment Outcome , Macula Lutea , Macular Edema , Electric Injuries , Eye Injuries , Fundus Oculi , Visual Acuity , Tomography, Optical CoherenceABSTRACT
CASE REPORT: A 35 year-old female with a pigmented choroidal tumor in the inferotemporal quadrant, of 3.31 x 7.64 x 5.46 mm. The patient received an intravenous injection of 25 mg of indocyanine green previous to photocoagulation of the lesion with an 810 nm diode laser. After one year follow-up the tumor showed involution demonstrated by clinical and ultrasonographic evaluation. DISCUSSION: Indocyanine green allows maximal absortion of light energy delivered by diode laser, enhancing its action by making the deepest tissues vulnerable to photocoagulation and reducing time of exposure and number of sessions.
Subject(s)
Choroid Neoplasms/surgery , Laser Coagulation , Melanoma/surgery , Adult , Female , Humans , Indocyanine GreenABSTRACT
Caso clínico: Paciente femenino de 35 años de edad con presencia de tumoración coroidea pigmentada en cuadrante inferotemporal, de 3,31x7,64 x 5,46 mm. La lesión se fotocoaguló con láser de diodo de 810 nm previa inyección intravenosa de 25 mg de verde de indocianina.Tras un año de seguimiento el tumor mostró involución demostrada por clínica y ultrasonido.Discusión: El verde de indocianina permite máxima absorción de la energía luminosa suministrada por el láser de diodo, potenciando su acción al hacer a los tejidos más profundos vulnerables a la fotocoagulación, reduciendo el tiempo de exposición y número de sesiones (AU)
No disponible
