eyeball is too short. The focal point of the eye is behind the retina. Your near vision is then blurred, e.g. when reading. When the eye compensates through accommodation, this often leads to eye strain, fatigue [...] that only vertically oscillating light waves can pass through it. If light hits a reflective surface, e.g. a wet road, it is also polarised - this time oscillating horizontally - and cannot pass through the [...] for short-sightedness. What is age-related long-sightedness? As we age, the power of accommodation, i.e. the adaptability of the eye decreases. Objects in our near vision appear blurred. This process usually