A lot of people squint (press lids against the eyes, making them seem narrow) to see clearly, and to them, this is normal. This is a sign of near-sightedness and/0r astigmatism. When a person is nearsighted, or Myopic, their cornea is often too curved, so when you squint, you press the lids against the cornea, which flattens it a bit, resulting in clearer vision. Constant squinting often results in headaches and tired eyes.
If you or your loved one squints to see clearly, get your eyes examined so you can get spectacles or contact lenses, which will help you see better without much effort.
