I&#x27;m pretty sure I have sleep apnea as well, and I&#x27;ve done something similar. I will often let my right eye stay closed while I&#x27;m getting ready for work, or going places that aren&#x27;t work, and that seems to satisfy part of my brain that demands sleep otherwise.<p>It actually takes some effort to keep my left eye closed, but for some reason its super easy to keep my right eye closed and takes pretty much no effort at all. So it might be a biological thing. I also struggled to keep my left eye open enough to put contacts in it back when I bothered using contacts.