The investigators were interested in pigmented tumours of the anterior segment of the eye in children because there is very little data on their evolution. The nevus is the most common conjunctival tumour.

The challenge is to be able to adapt the child's follow-up according to the imaging and avoid an invasive procedure such as surgical excision if the imaging does not find any suspicious cells despite a change in size or colour. This would also make it possible to answer parents' questions about the potential evolution of the tumour. Finally, it would enable the frequency of monitoring to be personalised according to the data analysed. The tests are all non-invasive and painless.

Inclusion Criteria:

• Patient who had a first dermato-ophthalmological consultation < 18 years old with pigmented tumors of the anterior ocular system

Exclusion Criteria:

• patient over 18 years old at first examination

Children with pigmented tumors of the anterior ocular system