If you experience a distortion or blurring of images at all distances -- nearby as well as far -- you may have astigmatism. Even if your vision is fairly sharp, headache, fatigue, squinting and eye discomfort or irritation may indicate a slight degree of
If you can see objects at a distance clearly but have trouble focusing well on objects close up, you may be farsighted. Farsightedness or long-sightedness is often referred to by its medical names, hypermetropia or hyperopia.
Do you occasionally see specks or threadlike strands drifting across your field of vision? Then, when you try to look at them, do they seem to dart away? If so, you're seeing what eye care practitioners call spots or floaters