Bagolini striated glasses test and lesions of the optic chiasm.
OBJECTIVE
To examine the usefulness of the Bagolini Striated Glasses Test to identify patients with a lesion of the optic chiasm.


METHODS
Twelve patients who were diagnosed with a lesion of the optic chiasm by MRI were examined with the Bagolini Striated Glasses Test. Discrepancies of the test between monocular and binocular conditions were analyzed. Visual acuity, visual field and stereo tests were also administered and assessed.


RESULTS
Nine out of 12 cases (75%) showed conflicting results with the Bagolini Striated Glasses Test between monocular and binocular conditions. With monocular testing, essentially normal stripes were observed in each eye. In binocular testing, stripes which were projected upon nasal retina were suppressed bilaterally (bitemporal hemianopia pattern) ("mountain pattern") or monocularly (monocular temporal hemianopia pattern).


CONCLUSIONS
The Bagolini Striated Glasses Test can be used as a simple differential diagnostic test for lesions of the optic chiasm. The "mountain pattern" seen binocularly on this test may be pathognomonic for such lesions, which may otherwise be asymptomatic and/or overlooked.
Hirai
Toshie
T
Department of Opthamology, Nagoya University School of Medicine, Nagoya, Japan. hiraito@asu.aasa.ac.jp
Kondo
Mineo
M
Takai
Yoshiko
Y
Ota
Yoshie
Y
Sato
Miho
M
Miyake
Yozo
Y
D000236:Adenoma / Q000175:diagnosis; D000293:Adolescent; D000328:Adult; D000368:Aged; D003397:Craniopharyngioma / Q000175:diagnosis; D003937:Diagnosis, Differential; D005139:Eyeglasses; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009897:Optic Chiasm / Q000473:pathology*; D019574:Optic Nerve Neoplasms / Q000175:diagnosis*; D010911:Pituitary Neoplasms / Q000175:diagnosis; D014786:Vision Disorders / Q000175:diagnosis*; D014787:Vision Tests / Q000295:instrumentation / Q000379:methods*; D015348:Vision, Binocular; D014792:Visual Acuity; D014794:Visual Fields