I am also having the same problem but mine is not all the time. It happens when I focus on my phone for hours and I switched off the light to sleep after that. Then in the dark, I feel that my left eye is not moving totally but the right one does. I am worried and I happened to go see the eye specialist and he said he has never heard of that condition and asks me to go see other specialist related to nerves or brain.
Hi,
How are you? Squints are caused by difficulty in focusing, and may be due to refractive errors, genetic factors, and rarely due to damage to the nerves controlling movement of the eyes. There are several different types of squint, depending on the direction followed by the gaze of the affected eye.You may need to have this checked by your eye doctor for proper evaluation. Treatment will depend on the underlying cause. It may include glasses to correct the visual problems, and patching of the normal eye to force the brain to use the affected eye. Take care and do keep us posted with your brain scan results.