12 Questions
What is the process of transfer of light energy to a particle or surface?
Absorption
Why is there no visual sensation at the optic disk?
Because there are no photoreceptors in the optic disk
What is the main function of the aqueous humor in the eye?
To maintain the eye's shape
If the cornea has a refractive power of 42 diopters, at what distance behind the corneal surface will parallel light rays be focused on the retina?
0.024 m
Which layer of the retina contains the cell bodies of the bipolar cells, horizontal cells, and amacrine cells?
Inner nuclear layer
What is the main difference between the aqueous humor and the vitreous humor in the eye?
Their viscosities
Which cells in the retina have axons that leave the retina?
Ganglion cells
Where does most of the eye's refractive power occur?
Lens
What is the primary reason for the fovea's pit-like appearance?
Lateral displacement of cells above the photoreceptors in the fovea
What is meant by the term 'duplex retina'?
The presence of both rod and cone cells in the retina
Which of the following is associated with the photoreceptor 'dark current'?
The movement of positive current across the photoreceptor membrane in the dark
What is a key difference between ON-center and OFF-center ganglion cells?
ON-center ganglion cells respond to stimulation of their receptive field centers with a transient burst of action potentials
Test your understanding of light and its properties with this quiz. Questions cover topics such as absorption, refraction, and the human eye. See how well you can identify correct concepts and principles!
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