¿Qué es y cómo se evalúa la agudeza visual?

#iguru_soc_icon_wrap_6340517dcedf3 a{ background: transparent; }#iguru_soc_icon_wrap_6340517dcedf3 a:hover{ background: transparent; border-color: #2c8fa0; }#iguru_soc_icon_wrap_6340517dcedf3 a{ color: #2c8fa0; }#iguru_soc_icon_wrap_6340517dcedf3 a:hover{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee321{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee321:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6340517dcee321{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee321:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee512{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee512:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6340517dcee512{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee512:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee5d3{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee5d3:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6340517dcee5d3{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee5d3:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee694{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee694:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6340517dcee694{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee694:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_6340517dcee735{ color: #ffffff; }.iguru_module_social #soc_icon_6340517dcee735:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_6340517dcee735{ background: rgba(44,143,160,0.01); }.iguru_module_social #soc_icon_6340517dcee735:hover{ background: rgba(255,255,255,0.01); }