Dim-sightedness refers to a condition in which a person experiences low vision or inadequate visual acuity, making it difficult to perceive their surroundings. There are several other synonyms available to describe this condition, including myopia, short-sightedness, farsightedness, astigmatism, presbyopia, amblyopia, and cataracts. Myopia, also known as nearsightedness, is a condition in which a person has difficulty seeing distant objects clearly. Farsightedness, on the other hand, known as hyperopia, makes it hard to focus on close-up objects. Astigmatism refers to a distortion of the cornea that affects both distant and close vision. Presbyopia is an age-related condition that causes a gradual decline in the ability to focus on nearby objects. Amblyopia is a developmental disorder often accompanied by strabismus or misaligned eyes.