keepgoing
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A 22-year-old woman presents at the ophthalmology clinic. She describes an initial inability to drive at night because of what she describes as “night blindness.” She says that the deterioration of her vision has continued and she is having difficulty seeing objects on the periphery of her vision. Visual acuity, color, visual field, dark adaptation, and ERG testing is completed.The tests show rod degeneration with limited peripheral vision. She has pigment deposits in the mid-peripheral retina known as “bone spicules”She also has attenuated vessels in the retina and paleness of the optic nerves.An electroretinogram (ERG) is reduced in amplitude. The cause may be related to a failure of opsin and other protein vesicle transport. This transport would occur along which of the following?
a. Microfilaments (thin filaments)
b. Thick filaments
c. Microtubules
b. Intermediate filaments
e. Spectrin heterodimers
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| kingsof2005
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c
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| GoodGirl
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c
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| keepgoing
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again well done! 
yes it is C.
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| keepgoing
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can you name the condition being discussed in this scenario?
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| GoodGirl
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retinitis pigmentosa , if I remember well bc of those deposits.
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| keepgoing
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