<prompt> Careful testing of the visual fields in a patient complaining of difficulty reading demonstrates a central scotoma involving one visual field. This defect is MOST likely due to a lesion involving which of the following structures?MaculaOptic chiasmOptic radiations in the parietal lobeOptic radiations in the temporal lobe  <response>: Here is a list that may help you so through these problems: Central scotoma macula Ipsilateral blindness optic nerve Bitemporal hemianopia optic chiasm Homonymous hemianopia optic tract Upper homonymous quadrantanopia temporal optic radiations Lower homonymous quadrantanopia parietal optic radiations Also, coical lesions produce defects similar to those of the optic radiations, but may spare the macula. Ref: Sterns G.K., Faye E.E. 2011. Chapter 24. Low Vision. In P. Riordan-Eva, E.T. Cunningham, Jr. Eds, Vaughan Asburys General Ophthalmology, 18e. 