Describe and explain how the eye would focus on a near object. [5]
The process by which the eye focuses on a near object is called accommodation. Accommodation involves changes in the shape of the lens of the eye in response to the distance of the object being viewed.
When looking at a near object, the ciliary muscles located around the lens of the eye contract, causing the lens to thicken and increase its curvature. This allows the eye to refract light rays from the near object more sharply and bring them into focus on the retina.
Additionally, the pupillary reflex may occur, which is the constriction of the pupil in response to the close-up work. This helps to increase the depth of field, allowing for more of the near object to be in focus at once.
Overall, the process of accommodation allows the eye to adjust and bring near objects into focus by changing the shape of the lens and constricting the pupil.
Accommodation is the process by which the eye adjusts to view objects at different distances. When focusing on a near object, the ciliary muscles around the lens of the eye contract, causing the lens to thicken and increase its curvature.
When focusing on a near object, the ciliary muscles located around the lens of the eye contract, causing the lens to thicken and increase its curvature. This allows the eye to refract light rays from the near object more sharply and bring them into focus on the retina.
The ciliary muscles around the lens of the eye contract when focusing on a near object, causing the lens to thicken and increase its curvature. This allows the eye to refract light rays more sharply and bring them into focus on the retina.
The pupillary reflex is the constriction of the pupil in response to close-up work. This helps to increase the depth of field, allowing for more of the near object to be in focus at once.
If the eye is unable to focus on a near object, it may be due to a condition called presbyopia, which is a natural age-related change in the ability of the lens to change shape. It can also be caused by other refractive errors, such as myopia or hyperopia.
Still got a question? Leave a comment
Leave a comment