Can Google Glass cause eye muscle strain instead of headaches?

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Google Glass Usage Can Lead to Eye Muscle Strain Due to Display Positioning

Google Glass usage can indeed cause discomfort, specifically eye muscle strain rather than what is typically defined as a headache, according to insights from Dr. Eli Peli, a consultant optometrist involved in the device's development. The primary reason for this discomfort stems from the specific placement of the display, which is positioned in the upper right portion of the wearer's natural field of vision. This deliberate placement is intended to prevent the screen from obstructing the wearer's view of their immediate surroundings, thereby enhancing safety when navigating public spaces or crossing roads.
Display Placement Induces Eye Muscle Strain

The design of Google Glass positions its display to the upper right of the wearer's direct line of sight. This arrangement necessitates a constant upward gaze, a posture that is generally less comfortable for most individuals compared to looking straight ahead or downwards. Dr. Peli noted that this sustained upward viewing is not a natural or common habit for people, leading to strain on the eye muscles. He clarified that while users report pain, this sensation is specifically attributable to muscular exertion and should not be categorised as a headache.
Strain Not a Traditional Headache

Dr. Peli emphasized the distinction between the discomfort experienced by Google Glass users and a conventional headache. He explained that the sensation is a direct result of the eye muscles working harder to maintain the upward gaze required to view the screen. This specific type of discomfort, caused by muscular fatigue, is inconsistent with the physiological experience of a headache, which typically involves different pain pathways.
Intended Use and Adjustment Period

The intended use of Google Glass is for brief, "micro-interactions," such as checking navigation or messages, rather than prolonged engagement. Dr. Peli suggested that users often overindulge with new technology, leading to extended usage that can exacerbate eye strain. Google itself recommends an adjustment period for new users, similar to getting accustomed to prescription eyeglasses, and advises against using Glass for extended activities like watching movies or reading.

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Can Google Glass cause eye muscle strain instead of headaches?

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