optic nerves
retina
ciliary muscles
cornea
aqueous humour
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The ciliary muscle is an elastic tissue that plays a primary role of altering the lenses in the eye for adjustment and accommodation of rays of light.And from that,it could be deduced that ciliary muscle controls long and short sightedness in an ageing individual because as one gets older,the weaker the ciliary muscles becomes,thereby, making vision of far or close objects difficult in an aged.
the answer is cilliary muscle but not retuna cause i dont know how retina will afect your sighting and i dont think there is any eye defect that deals with retina
the absolute and correct answer is cilliary muscl
Nice try victor, I weakening of the cilliary muscle is associated with age and the defect is called presbyopia. whereas long and short sight depends on the size of the eyeball and the nature of the cornea.
both rectina and cillary muscles play are role
this question is complicated,and depends on what the marker determines as the correct ans not neccessary the correct ans
As we become older the lens becomes more stiff and less elastic. This makes it more difficult for the lens to change shape - the ciliary muscles have to work harder to make it do so. Eventually they are unable to do this at all and the lens cannot be thickened. With the lens in its normal resting position you are still able to focus on objects in the distance - long sight. However, because the lens cannot thicken, it cannot manage the extra degree of focus (accommodation) which is needed for near objects.
The nearest answer would have been c which is ciliary muscle. But the pathophysiology of presbyopia is due to ageing of the lens, not ciliary body. Prebyopia is what the question means by long sightedness.
of course the answer is C, because the ciliary muscles wekeans with age. As in astigmatism.
i think the answer is correct...old age can cause damage to the retina...causing macular degeneration and diabetic retinopathy
The correct answer is C. ciliary muscles.
Long-sightedness, or hypermetropia, is a common condition that often affects older adults. This happens when the eye can't focus light on the retina properly. The ciliary muscles in the eye control the shape of the lens. As we age, these muscles can become weaker, and the lens can lose its elasticity, making it harder to focus on close objects. This condition is also known as presbyopia. Hence, the correct answer is C.
Presbyopia :this defect is usually comes due to old age. The power lens to accommodate is reduced due to less elasticity of the lens or hardened ciliary muscles. Making option C the answer.
The answer is C.
Presbyopia is associated with old age and it's characterised by weakness of lens.
lens is adjusted by Ciliary muscles.
