The Eye (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What do photoreceptors in the eye convert light energy into?
What do photoreceptors in the eye convert light energy into?
Electrical nerve impulses
Which structures are formed by the middle layer (choroid) of the eye?
Which structures are formed by the middle layer (choroid) of the eye?
Ciliary body, lens, and iris
Which structure provides most of the eye's refractive power?
Which structure provides most of the eye's refractive power?
The cornea
What happens to the pupil in bright light conditions?
What happens to the pupil in bright light conditions?
It becomes smaller
During accommodation for near objects, what happens to the ciliary muscles?
During accommodation for near objects, what happens to the ciliary muscles?
They contract
What type of photoreceptor cells are densely packed in the fovea?
What type of photoreceptor cells are densely packed in the fovea?
Cone cells only
Which visual pigment do rod cells contain?
Which visual pigment do rod cells contain?
Rhodopsin
How many cone cells does each human retina contain?
How many cone cells does each human retina contain?
6-7 million
What type of lens corrects myopia (short-sightedness)?
What type of lens corrects myopia (short-sightedness)?
Concave lenses
What percentage of blindness cases in Australia is caused by macular degeneration?
What percentage of blindness cases in Australia is caused by macular degeneration?
50%