What is a recommended distance to position a monitor for optimal viewing?

Positioning a monitor for optimal viewing is crucial for comfort and to reduce the risk of eye strain and other physical discomforts. The recommended distance of one arm's length from the head is based on ergonomic principles that aim to ensure that the user can comfortably view the screen without having to lean forward or squint. This distance generally falls within the range of 20 to 30 inches from the eyes, which is widely advised to maintain a good balance between visibility and comfort.

When a monitor is placed at this distance, it allows for a wide field of view and promotes proper posture by encouraging the user to sit back and relax rather than hunching over or straining. This practice can significantly minimize tension in the neck, shoulders, and eyes, contributing to a better overall working experience.

The other options may imply distances that are either too far or not specifically focused on ergonomic guidelines. For instance, two arm's lengths could create unnecessary distance, diminishing clarity and requiring eye strain to focus. Similarly, stating a minimum of two feet doesn’t consider individual comfort and may also not align perfectly with ergonomic recommendations. Finally, being close enough to read without strain can be subjective and varies between individuals, making it less reliable than the standard of one arm's length.