El Test de Snellen y la agudeza visual Elisa Aribau
Snellen Test Score Of 20/40. Web a result of 20/40 means you can see at 20 feet what those with normal vision can see from 40 feet away. Web in the u.s., this number will almost always be 20 to represent 20 feet of distance.
Web in the u.s., this number will almost always be 20 to represent 20 feet of distance. Countries that use the metric. Hold the screen 4 feet (1.2 m) from the patient (approximately. Web ensure proper room lighting and set phone brightness to 100%. Web a result of 20/40 means you can see at 20 feet what those with normal vision can see from 40 feet away.
Web ensure proper room lighting and set phone brightness to 100%. Web a result of 20/40 means you can see at 20 feet what those with normal vision can see from 40 feet away. Web ensure proper room lighting and set phone brightness to 100%. Countries that use the metric. Hold the screen 4 feet (1.2 m) from the patient (approximately. Web in the u.s., this number will almost always be 20 to represent 20 feet of distance.
