The results find that the font size affects the visibility depending on ambient light conditions. In a very bright characters can be seen in small to large have better conditions with less brightness.
The results showed that The font size affects vision. Depending on the ambient light conditions. The conditions are very bright, overlooking the font size small to large, well in low light conditions.
The results showed that the font size affect visibility. Based on the ambient light conditions. In a state with very bright can see the characters in small size to large better conditions with less brightness.