Difference between revisions of 3 hour rule
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The 3 hour rule is a suggestion to keep a balance between near work and time spent using distance vision and reduce [[eye strain]]. This can be an effective alternative to the [[20-20-20 rule]]. | The 3 hour rule is a suggestion to keep a balance between near work and time spent using distance vision and reduce [[eye strain]]. This can be an effective alternative to the [[20-20-20 rule]]. | ||
* | * After 3 hours of continuous close-up time, get an hour of continuous distance time. | ||
* | * Do not exceed 3 hours of close-up time. | ||
If you do near work for 4 hours or more continuously, it is likely you will have ciliary spasm that is harder to resolve and it may be more difficult to make improvements. | If you do near work for 4 hours or more continuously, it is likely you will have ciliary spasm that is harder to resolve and it may be more difficult to make improvements. | ||
Revision as of 18:43, 9 February 2022
The 3 hour rule is a suggestion to keep a balance between near work and time spent using distance vision and reduce eye strain. This can be an effective alternative to the 20-20-20 rule.
- After 3 hours of continuous close-up time, get an hour of continuous distance time.
- Do not exceed 3 hours of close-up time.
If you do near work for 4 hours or more continuously, it is likely you will have ciliary spasm that is harder to resolve and it may be more difficult to make improvements.