Certified Paraoptometric Practice Test

Emmetropia is the correct answer because it refers to the state in which light rays from a distant object are focused correctly on the retina without the need for accommodation. This means that the eye is able to focus on objects both near and far without any blurred vision.

Ametropia (option A) refers to any visual condition where images do not focus correctly on the retina, resulting in blurred vision. This includes both myopia (nearsightedness) and hyperopia (farsightedness).

Astigmatism (option B) is a type of ametropia where the cornea is not perfectly spherical, causing light rays to focus at different points on the retina. This results in distorted or blurred vision.

Hyperopia (option D) is a type of ametropia where the eye is unable to focus on near objects. In this case, light rays from a distant object would need to be bent more in order to focus on the retina, requiring accommodation.

Therefore, both myopia and hyperopia are types of ametropia, and astigmatism is a specific type of ametropia. Only emmetropia (option C) is the correct term for the state in which accommodation is relaxed and