Utilização de implantes para o manejo de cavidades anoftálmicas

Os implantes geralmente são empregados, após a remoção do olho ou do seu conteúdo interno, visando a manutenção do volume orbitário com ou sem a colocação posterior de prótese ocular. Por considerar a cirurgia protética  procedimento de relevância na oftalmologia veterinária e humana, buscar-se-á revisar os principais tipos de implantes descritos na literatura nacional e  internacional, bem como discorrer acerca das principais intercorrências quando da sua utilização em humanos e pacientes veterinários.

Symmetric Kullback-Leibler Metric Based Tracking Behaviors for Bioinspired Robotic Eyes

A symmetric Kullback-Leibler metric based tracking system, capable of tracking moving targets, is presented for a bionic spherical parallel mechanism to minimize a tracking error function to simulate smooth pursuit of human eyes. More specifically, we propose a real-time moving target tracking algorithm which utilizes spatial histograms taking into account symmetric Kullback-Leibler metric. In the proposed algorithm, the key spatial histograms are extracted and taken into particle filtering framework. Once the target is identified, an image-based control scheme is implemented to drive bionic spherical parallel mechanism such that the identified target is to be tracked at the center of the captured images. Meanwhile, the robot motion information is fed forward to develop an adaptive smooth tracking controller inspired by the Vestibuloocular Reflex mechanism. The proposed tracking system is designed to make the robot track dynamic objects when the robot travels through transmittable terrains, especially bumpy environment. To perform bumpy-resist capability under the condition of violent attitude variation when the robot works in the bumpy environment mentioned, experimental results demonstrate the effectiveness and robustness of our bioinspired tracking system using bionic spherical parallel mechanism inspired by head-eye coordination