Difference between revisions of Close-up glasses
Jump to navigation
Jump to search
m
no edit summary
mNo edit summary |
mNo edit summary |
||
| Line 35: | Line 35: | ||
== When are differentials worn == | == When are differentials worn == | ||
The standard [[reduced lens method]] advice is to wear differentials when looking at static focal planes (e.g. 2D planes like screens, books) at fixed distances for extended periods of time. The main activities that the reduced lens method warns against include screen work, media consumption, and checking phone notifications. It is okay to wear normalized in other contexts, such as when eating a meal, or looking at your conversation partners. It is also permitted to wear differentials in other close-up contexts based on personal preference, but there is no need to overdo normalized/differential glasses changes. (for example, there is no need to swap to differentials whenever someone walks up to you for a conversation) | |||
To determine if a close up activity is hurting your vision with the glasses you are using (differentials or normalized), it helps to have a point of comparison (like a line on a Snellen chart), and to compare against that reference point before and after the activity in question. | To determine if a close up activity is hurting your vision with the glasses you are using (differentials or normalized), it helps to have a point of comparison (like a line on a Snellen chart), and to compare against that reference point before and after the activity in question. | ||