Want this question answered?
The eye can't focus on things too close because, the eye is 'made' to focus on things at a certain distance. So even if you are near-sighted you will have problems seeing things too close to the eye.
it means the focus allows us to focus the lens to see a clearer view of an object
Adjustment knobs are used to focus light in a light microscope.
Convergence
adjustment knobs
A suspensory ligament suspends and holds, or assists in the holding of a joint alignment, an organ, or organ component in place. Examples would be the lens being held in alignment with the aperture and retina of the eye, or the juxtaposition of the patella and joint alignment of the knee.
im sure its when the lens either gets thicker or thinner to focus on near or far things----------------------------------------------------------------Accommodation is when the shape of the lens in the eye changes to make sure that a clear image is still being reflected onto the retina when you're looking at far of near objects.When you look at a near object, a lot of light refraction is needed, so the ciliary muscles contract & the suspensory ligaments slacken so that the shape of the lens becomes fat & rounded.When you look as a far object, not a much light refraction is needed, so the ciliary muscles relax & the suspensory ligaments tighten, allowing the lens to become long & thin.In this way, you continue to see a clear image whether you're looking at something in the distance or something nearby & this is accommodation.
The eye can't focus on things too close because, the eye is 'made' to focus on things at a certain distance. So even if you are near-sighted you will have problems seeing things too close to the eye.
The human eye has the ability to absorb light that is emitted and reflected from the environment. Visible light rays from some source, such as the Sun or a lamp, are emitted and transmitted. Light is absorbed from any and every object that it touches. That object absorbs the light that the corresponding pigment is able to absorb, such as chlorophyll absorbing red light. That light is absorbed into the eye and is processed to the brain via the optical nerve to create an image. Of course, any eye disorder, such as myopia or astigmatism, hinders the ability for the light to be properly processed and to be seen clearly by the eye.
Select an object about 50 yards away, then use both the front and rear ring to focus the object into view.
Simply because the fine focus moves too quick to get the object focused. Chances are you will miss the focus point.
[object Object]
by moving and looking at it
parabola
accommodation
it means the focus allows us to focus the lens to see a clearer view of an object
The lens of the eye is held in place behind the pupil by the suspensory ligament