The Accommodating Power of the Human Eye to See Far and Near Objects

The power of accommodation of the eye is the ability of the eye to change the shape of the lens to focus on near and far objects.

The human eye is the most important organ. With the eyes, then we can see the whole contents of this world.

Of course, the eye can not only help see objects up close, but also far away. When the eye can see near and far objects respectively, it means that it is normal.

Also Read: The function of the pupil in the eye and the factors that cause changes in its size

What is the Accommodation Power of the Human Eye?

In order to carry out daily activities, we have eyes that help us see.

The eye can see various objects, both far and near. Of course a normal eye will be able to see objects at various distances.

This happens because of the accommodation power of the eye which will make the lens in the eye convex and convex as needed.

If launched from the BBC, this accommodation power is the ability of the eye organs to change the shape of their lens. The lens will then focus on objects that are near or far.

Accommodation of the eye will allow the lens to convex and convex. It happens so that light can fall directly in front of the retina, so that the eye can see far and near objects, respectively.

Also Read: The Function of the Tear Bone is Relatively Complex, Check Out the Explanation!

Eye Accommodation Mechanism

You may still be confused about how our eyes accommodate when we see near and far objects.

If yes, then the following is an explanation of the mechanism.

1. Seeing Close-Up Objects

The mechanism of the accommodation power of the eye is very dependent on the ciliary muscle which acts as the shape of the eye lens.

When we look at a close distance, the eye’s ciliary muscle contracts and relaxes the fibers that attach to the crystal sheath of the lens.

As a result, it will make the flexible lens become curved or convex thicker.

The light is then refracted so strongly that the near light can still fall on the retina and be seen clearly. When looking at an object up close, it will be in full accommodation.

Also Read: The process of the formation of tears when crying and its function

2. Seeing Remote Objects

After looking at close-up objects and then switching to far ones, the lens shape must be adjusted. The convex lens of the eye will prevent distant eye rays from reaching the retina.

The ciliary muscle relaxes, making the lens flatter, some even becoming very thin.

In this thin form, the eye lens will be at minimal power and can only refract light. As a result, the rays of distant objects can still fall right on the retina and be seen clearly.

Relaxation of the ciliary muscles will make the eyes become calmer and are at their minimum accommodation.

The normal near point eye accommodation power in children is 10-20 cm and for adults it is 20-30 cm. Meanwhile, the accommodation power of the far point near the normal eye is infinity. (R10/HR-Online)

–