You should have seen me squinting trying to determine what was on each layer of a Photoshop project that I was working on. Those thumbnails in the layers palette give you a peak at what they are. If you can see them! Here is how to make sure you can see what is on your layers.
The default setting is for small thumbnails. They look like this:
- No thumbnail
- Small thumbnails
- Medium thumbnails
- Large thumbnails
Hmmm, you're saying "I don't see much improvement!" You're right, there is some improvement, but not much. I'd still be reaching for the reading glasses! But there is one more setting that you can change that will really make it better. On that same selection box, below the thumbnail size, change the bounding selection. The default is to clip thumbnails to document bounds. Change this to "clip thumbnails to layer bounds"
If you work in Photoshop Elements, you can adjust the size of the thumbnails, but you don't have the option to clip the thumbnail to the edge of the layer. To change the size of the thumbnail in PSE, right click in the gray area below the layers and select the size you would like for your thumbnails.
I hope this tip helps to keep you from squinting as you work!