¿Qué es y cómo se evalúa la agudeza visual?

#iguru_soc_icon_wrap_669eeeae0dc4a a{ background: transparent; }#iguru_soc_icon_wrap_669eeeae0dc4a a:hover{ background: transparent; border-color: #2c8fa0; }#iguru_soc_icon_wrap_669eeeae0dc4a a{ color: #2c8fa0; }#iguru_soc_icon_wrap_669eeeae0dc4a a:hover{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dca51{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dca51:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dca51{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dca51:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dcc02{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dcc02:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dcc02{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dcc02:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dccb3{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dccb3:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dccb3{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dccb3:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dcd54{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dcd54:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dcd54{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dcd54:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dcde5{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dcde5:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dcde5{ background: rgba(44,143,160,0.01); }.iguru_module_social #soc_icon_669eeeae0dcde5:hover{ background: rgba(255,255,255,0.01); }.iguru_module_social #soc_icon_669eeeae0dce86{ color: #ffffff; }.iguru_module_social #soc_icon_669eeeae0dce86:hover{ color: #2c8fa0; }.iguru_module_social #soc_icon_669eeeae0dce86{ background: rgba(44,143,160,0.01); }.iguru_module_social #soc_icon_669eeeae0dce86:hover{ background: rgba(255,255,255,0.01); }