Orbital anatomy; orbital radiography; orbital surgery; microorbitism; teleorbitism; malorbitism (trigonocephaly, plagiocephaly, brachycephaly, encephaloceles, treacher collins); neuromuscular anomalies; palpebral anomalies; orbitopathy (transorbital decompression, transpalpebral decompression); orbital tumours; orbito-palpebral tumours (haemangiomata, neurofibromatosis); palpebral tumours (pathology, palpebral reconstruction - minor defects, palpebral reconstruction - major defects); palpebral degeneration (senile entropion and ectropion); orbito-palpebral trauma (orbital reconstruction, palpebral reconstruction - minor defects, palpebral reconstruction - major defects); socket surgery; lacrimal apparatus surgery.