Clinical Optics

Hyperopia, or farsightedness, is a common vision problem, affecting about a fourth of the population. People with hyperopia can see distant objects very well, but have difficulty focusing on objects that are up close. The condition is sometimes referred to as “hypermetropia” rather than hyperopia. Hyperopia Symptoms And Signs Farsighted people sometimes have headaches or […]

Higher-order aberrations or HOAs are more complex vision errors than lower-order aberrations, which have more familiar names such as nearsightedness, farsightedness and astigmatism. If your eye doctor tells you that you have a higher-order aberration, you may wonder exactly what this condition means and what impact — if any — it has on the quality

Presbyopia usually occurs beginning at around age 40, when people experience blurred near vision when reading, sewing, or working at the computer. You can’t escape presbyopia, even if you’ve never had a vision problem before. Even people who are nearsighted will notice that their near vision blurs when they wear their usual eyeglasses or contact