Aniridia is a rare birth eye defect characterised by an under-developed or absent iris (no eye colour). It can be associated with WAGR syndrome, increasing the risk of developing Wilms tumour.

Aniridia is a a pan-ocular bilateral congenital eye anomaly characterised by complete or partial iris hypoplasia, foveal hypoplasia and early-onset nystagmus. Patients with WT1 deletion are at risk of developing Wilms tumour.

Nystagmus means the involuntary movements of the eyes. This can be due to a number of conditions and sometimes, it can occur even when there are no abnormalities in the eyes or brain.

Albinism is an inherited condition that affects the pigmentation of the eyes, hair and skin. Patients often have lack of pigmentation in these structures, resulting in a variety of symptoms.