BOF 23
The following field defects correspond to their
matched statement, except one is wrong, which one is wrong:
1-pappilodema -enlargement of the physiological blind
spot
2-tubal vision –conversion disorders
3-biteporal hemianopia –craniopharyngioma
4-severe central scotoma –totally normally appearing
disc
5-centrocecal scotoma – chronic simple glaucoma
Answer: 2
Unlike the common belief; visual fields are actually
detected much BETTER by a neurologist rather than by an ophthalmologist (who
orders formal perimetry and doesn't know how to detect them by his own!!!!)
Any how, visual field defects are common in clinical
neurology:
1-true and with later constriction of the peripheral
field. Remember: any papilloedema with severe visual impairment then it is NOT
papilloedema , it is BILATERAL papillitis !!!!! So be careful !!!
2-true...tubal vision and tunnel visions are not the
SAME ……tubal vision : the visual field remains with the same constriction as
we go farther from the patient , but in the Tunnel vision , it improves as we
move away from the patient ( just imagine looking from inside a tube and then
inside a tunnel !! they are different )
tubal vision is seen in hysterical reactions while
tunnel vision is seen in chronic glaucoma.
3-ie a chiasmal lesion …….Also a chiasmal lesion may
cause a junctional scotoma.
4-may be retrobulbar neuritis e.g. MS???!! In these
cases, the patient sees NOTHING and you see NOTHING abnormal also!!!!
5-relatively early chronic simple glaucoma
Revision Tip
Revise visual field defects ACES for PACES
page 471-473
