Exam 2: Light and the Eyes

The only type of electromagnetic radiation that can be seen by the human eye is:

Which condition is characterized by a loss of vision due to damage to the photoreceptors in a region at the center of the retina?

_____ receive signals from and send signals to horizontal cells in the retina.

The intraocular pressure in the three chambers of the eye is _____ the air pressure.

Define accommodation. Explain the process of accommodation occurring in the eye lens when focusing on objects at different distances from the eye.

The surface of the retina can be seen through a(n):

The photopigments in _____ and _____ have some sensitivity across nearly the entire spectrum of visible light.

Presbyopia is characterized by a:

According to the text, in hyperopia:

A light source emitting a wavelength of approximately 700 nm would be perceived as:

Why is there often a trade-off between acuity and sensitivity in the responses of retinal ganglion cells? Why do retinal ganglion cells that exhibit high acuity also tend to have relatively low sensitivity to light and vice versa?

The _____ is an imaginary diameter line from the front to the back of the eye, passing through the center of the lens.

The cones-only curve in a dark adaptation experiment is obtained by:

The inner nuclear layer of the retina contains bipolar cells, horizontal cells, and:

The _____ is the portion of the surrounding space that one can see when one's eyes are in a given position in their sockets.

_____ is a property of retinal circuits with convergence in which signals from photoreceptors in some small space on the retina add up to affect the response of the retinal ganglion cells in the circuit.

Photopigment regeneration:

Which statement is TRUE regarding the disorders of accommodation?

Which statement about an optic array is FALSE?

How many different kinds of photopigment molecules are present in the human retina?