Table 3: Histological features of the patients (n = 234 eyes).

Histological featuresNumber of eyes (N)Percentage (%)

Tumour differentiation
 Well differentiated4619.7
 Moderately differentiated7632.5
 Poorly differentiated11247.9

Formation of rosettes
 Flexner–Wintersteiner3615.4
 Homer Wright7130.3
 Pseudorosettes12754.3
 Fleurettes

Tumour invasion
 Optic nerve4928.5
 Choroidal4727.3
 Scleral3922.7
 Anterior chamber3721.5

Necrosis
 <50%5121.8
 >50%8335.5

Dystrophic calcification
 Yes6929.5
 No16570.5

Cholesterol clefts
 Yes3414.5
 No20085.5