Phys 1.6 - The Eye 0.0 / 5 ? PhysicsLight and OpticsGCSEAQA Created by: DanCreated on: 03-05-13 22:41 Where does light enter the eye? Cornea 1 of 12 How does light reach the retina? The cornea and eye lens focus light on the retina 2 of 12 What is the job of the Iris? Controls how much light enters the eye 3 of 12 How does the iris do this? Adjusts size of pupil 4 of 12 What does the ciliary muscle do? Adjust thickness of lens 5 of 12 What attatch ciliary muscles to the lens? Suspensory Ligaments 6 of 12 What carries pulses from the retina to the brain? Optic Nerve 7 of 12 Describe in detail how the eye receives light Light rays enter through the cornea, the iris controls how much light is let in by adjusting pupil size, light is then focused on the retina by eye lens 8 of 12 What is the average human eye near and far point? Near point 25cm, far point infinity 9 of 12 How can we work out the power of a lens? P = 1 / F 10 of 12 What does P mean? also state the measurement Power of lens in Dioptres, D 11 of 12 What does F mean? Also state the measurements Focal length of lens in metres, M 12 of 12
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