What is a common characteristic of short sightedness?

Short-sightedness, also known as myopia, is a vision condition where the eye focuses images in front of the retina rather than directly on it. This condition results in difficulty seeing distant objects clearly while close objects can be seen without much issue. The root cause of myopia often involves the eyeball being too long or the cornea being too curved, which affects the way light rays are focused. Therefore, the primary characteristic of short-sightedness is the difficulty in seeing objects that are far away, making the answer pertaining to distant vision the correct choice.

The other options discuss different visual issues that don't align with the specific nature of myopia. For instance, the inability to see close objects clearly relates more to long-sightedness (hyperopia), while increased eye pressure is associated with conditions like glaucoma, and inconsistent night vision could point to a variety of other eye disorders, not solely myopia.