There is less pigment in the peripheral retina of healthy eyes, resulting in the commonly seen tigroid
fundus appearance (see Figure 5A); this appearance is typically accentuated in eyes with depigmentation, such as in high myopia or retinal atrophy.
Fundus examination with 90-D lens revealed peripapillary atrophy and peripheral tigroid
fundus in both eyes.
An MRI scan of the brain revealed cortical demyelination with tigroid
appearance which confirmed the diagnosis of Metachromatic leukodystrophy.
1,2) The MR imaging appearance is considered diagnostic and can obviate biopsy, consisting of a tigroid
, striated appearance of the nonenhancing cerebellar mass with superficial bands of alternating T2 hyper- and isointensity to grey matter, iso- and hypointense on Tl-weighted imaging, with sporadic calcification reported and minimal loco-regional mass effect.
Some breeds (Lhasa Apso, Spitz) with less pigmented non tapetal fundus, in which choroidal blood vessels were visible, had a tigroid
or striped pattern.
Included in this group are a passionate Bard, a Lemurian thief, a priest, a shape shifter, a black Tigroid
talking cat, a princess, a holy knight, and a shape shifter.
Four cases were Metachromatic Leukodystrophy with imaging findings of symmetric periventricular white matter T2/FLAIR hyperintensities with one case showing the typical Tigroid
pattern due to sparing of perivascular white matter.