RESUMEN
PURPOSE: We describe in our study a modified standard enucleation, using sclera harvested from the enucleated eye to cover the prosthesis in order to insert a large porous implant and to reduce postoperative complication rates in a phthisis globe. METHODS: We perform initially a standard enucleation. The porous implant (Bioceramic) is then covered only partially by the patient's sclera. The implant is inserted in the posterior Tenon's space with the scleral covering looking at front. All patients were followed at least for twelve months (average followup 16 months). RESULTS: We performed nineteen primary procedures (19 patients, 19 eyes, x M; x F) and secondary, to fill the orbital cavity in patients already operated by standard evisceration (7 patients, 7 eyes). There were no cases of implant extrusion. The orbital volume was well reintegrated. CONCLUSION: Our procedure was safe and effective. All patients had a good cosmetic result after final prosthetic fitting and we also achieved good prothesis mobility.
Asunto(s)
Óxido de Aluminio/química , Enucleación del Ojo/métodos , Implantes Orbitales , Esclerótica , Enucleación del Ojo/efectos adversos , Evisceración del Ojo/efectos adversos , Evisceración del Ojo/métodos , Femenino , Humanos , Masculino , Persona de Mediana EdadRESUMEN
Macular disease is one of the main causes of visual impairment. We studied the efficacy of low-vision rehabilitation by means of MP-1 biofeedback examination in patients with different macular disease. Five patients were enrolled (3 female and 2 male, mean age 53.8 years) and a total of 9 eyes was examined: 2 eyes with vitelliform dystrophy, 1 with a post-traumatic macular scar, 2 with Stargardt disease, 2 with myopic macular degeneration, 2 with cone dystrophy. All the patients underwent the following tests: visual acuity, reading speed, fixation test, MP-1 microperimetry. Low-vision rehabilitation, which lasted 10 weeks, consisted of 10 training sessions of 10 min for each eye, performed once a week using the MP-1 biofeedback examination. Statistical analysis was performed using Student's t-test. p values less than 0.05 were considered statistically significant. After training all patients displayed an improvement in visual acuity, fixation behaviour, retinal sensitivity and reading speed. Fixation behaviour within the 2 degrees diameter circle improved and was statistically significant for reading speed (p = 0.01). Reading speed improved from a mean value of 64.3 to 92 words/min. Our results show that audio feedback can, by increasing attentional modulation, help the brain to fix the final preferred retinal locus. Audio feedback facilitates stimuli transmission between intraretinal neurons as well as between the retina and brain, which is where the highest level of stimuli processing occurs, thereby probably supporting a "remapping phenomenon".
Asunto(s)
Biorretroalimentación Psicológica/instrumentación , Degeneración Macular/rehabilitación , Trastornos de la Visión/rehabilitación , Adulto , Anciano , Angiografía , Femenino , Fijación Ocular/fisiología , Humanos , Degeneración Macular/patología , Masculino , Persona de Mediana Edad , Músculos Oculomotores/fisiología , Proyectos Piloto , Lectura , Retina/fisiopatología , Vasos Retinianos/fisiología , Escotoma/patología , Encuestas y Cuestionarios , Tomografía de Coherencia Óptica , Trastornos de la Visión/patología , Agudeza Visual/fisiologíaRESUMEN
The optic nerve head pit is a congenital anomaly of the optic disc due to imperfect closure of the superior edge of the embryonic fissure. We studied in detail by means of fluorescein angiography (FLA), microperimetry (fundus related perimetry), and ocular coherence tomography (OCT) the case of a 30-year-old woman who had an optic pit with secondary retinoschisis in her right eye.
Asunto(s)
Disco Óptico/anomalías , Retinosquisis/etiología , Pruebas del Campo Visual/métodos , Adulto , Anomalías del Ojo/complicaciones , Anomalías del Ojo/diagnóstico , Femenino , Angiografía con Fluoresceína , Fondo de Ojo , Humanos , Retinosquisis/diagnóstico , Tomografía de Coherencia ÓpticaRESUMEN
To analyse biofeedback training by microperimeter MP-1 (Nidek Technologies) on patients with Age Related Maculopathy (AMD). We enrolled 15 patients (10 female and 5 male) and examined total of 27 eyes with AMD. All the patient underwent 10 training sessions of 10 min for each eye, performed once a week using the MP-1 biofeedback examination. Statistical analysis was performed using Student's t-test. p values less than 0.05 were considered statistically significant. All patients displayed an improvement in visual acuity, fixation behaviour, retinal sensitivity an reading speed. The mean character size value improved from 36.4 to 11.7; this result was statistically significant (p = 0.031). A biofeedback examination using the MP-1 microperimeter can help the brain to memorize the final fixation location by increasing attention modulation, thereby providing an efficient preferred retinal locus for visual tasks in patients with macular disease and central scotoma.