Pseudotripling of optic disc: a case report

Abstract

Although coloboma of optic nerve head and/or chorioretinal tissue is not uncommon, duplication or pseudoduplication of the optic disc is rare. Here we report a rare case of pseudotripling of optic disc in a 50-year-old asymptomatic male patient. Orbital magnetic resonance image confirmed presence of only one optic nerve. RESUMOEmbora o coloboma da cabeça do nervo óptico e/ou tecido coriorretiniano não sejam frequentes, a duplicação ou pseudoduplicação do disco óptico é rara. Relatamos aqui um caso raro de pseudotriplicação do disco óptico em um homem assintomático de 50 anos. A ressonância magnética orbital confirmou a presença de apenas um nervo óptico. Farzinvash Z Rev Bras Oftalmol. 2021;80(4):e0022.

Cluster-based routing in Wireless Sensor Networks with reduced energy consumption: A Systematic Review

“…The works discussed in this review [17][18][19][20][21][22][23][24][25][26] present reductions in energy consumption in relation to reference works in the literature, according to Table 1. Since some nodes may be highly requested to transmit data or messages to mobile devices, their energy levels may be quickly depleted.…”

“…The EEDMS algorithm [17] adopts two methods to collect normal or emergency data in a sensor network: 1 -It builds a spanning tree to forward emergency data to a base station; 2 -It divides the network into cells of the same size, which are managed by cell heads (CH) that collect normal data and forwards them to a mobile sink. The CH selection mechanism considers a cost function based on residual energy of nodes and their respective distances to the cell center.…”

“…Thus, the influence of energy consumption of devices with sensors on WSN routing has become the subject of research. Strategies are varied [17][18][19][20][21][22][23][24][25][26], with the aim of reducing the energy consumption of connected devices.…”