I've noticed that I can read about 10x longer at screens and books without my eyes tiring using the "pinhole trick" - where you curl your fingers and look through the hole (great explanation here https://www.youtube.com/watch?v=OydqR_7_DjI)
Pinhole glasses (shown below) have been advertised as being healthy for your eyes, although there seems to be no strong supporting evidence.
If not for long term affects, would these glasses use the same pinhole principle to reduce eye strain and allow you to stare at close objects for longer?
The pinhole glasses improved visual acuity, DOF [depth of focus], and accommodative amplitude; however, they resulted in decreased visual quality including general reduction of VF [visual field] sensitivity, CS [contrast sensitivity], and stereopsis.
https://iovs.arvojournals.org/article.aspx?articleid=2166618