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15.7 Reduced Eye
Two thirds of the focusing takes place at the eye.
The power of the lens is small because its index of refraction is less than that of the surrounding fluid.
The human eye is not able to form a clear image at the retina because the lens in the human eye cannot compensate for the diminished power of the cornea.
The lens in fish eyes is meant to do most of the focusing.
The path of a light ray through the eye must be traced with the help of four surfaces.
The front surface of the cornea has a diameter of 5mm.
The eye's index of refraction is the same as water.
The eye is behind the retina.
The model shows the relaxed eye which focuses parallel light at the retina.
The eye has been reduced.
The model we can use to determine the size of the image on the retina is the reduced eye.
The objects rays are focused between the limits.
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