The distance between the centers of two adjacent pixels, called the pixel pitch, is one of the main factors that influence the optimal viewing distance for hospital LED screens.
Generally speaking, the LED screen with a smaller pixel pitch, down to P1.25, P1.5, and P1.8, can be viewed closely, and its image quality is more detailed and refined. On the contrary, those with larger pixel pitches, such as P3 or P4, are suitable for being watched from further away; this is because they retain clarity over greater distances.