Several factors can account for squint eyes. A refractive error such as short sight, long sight or astigmatism can give rise to squint eyes because when you have a refractive error, you try to focus to see clearly, day by day, one of your eyes squints more than the other one. Or squint eyes are indicative of a generalized genetic or brain condition. If you suffer from cerebral palsy, hydrocephalus, brain injury or tumor, Noonan's or Down's syndrome, squint eyes occur in such cases. I suggest you go to hospital and consult an eye doctor as early as possible. If the squint eyes are caused by refractive error, your eye doctor will prescribe glasses for you. Or perhaps you will get the suggestion from your doctor that you need a surgery. In your daily life, you need to restrict the use of the good eye and force the squint eye to work.
You should take notice of your eyes. Your more serious degree of squinting eyes may be caused by the bad habits of using your eyes and your hygiene problems. You need to correct the above two sides. In order to protect your eyes, you need to keep the healthy diet and good rest for your eyes. You could use some eye drops to get rid of the bacterium in the eyes.