Near and Far Focus
Hold your thumb 10 inches (25 cm) away from your face and focus on it.
Then shift your focus to something far away, at least 20 feet (6 meters).
Alternate between near and far focus for 1-2 minutes.
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Near and Far Focus
Hold your thumb 10 inches (25 cm) away from your face and focus on it.
Then shift your focus to something far away, at least 20 feet (6 meters).
Alternate between near and far focus for 1-2 minutes.
