A Study to Compare the Effectiveness and Safety of T1695 Versus Ciclosporin in Participants With Moderate to Severe Vernal Keratoconjunctivitis

Main Inclusion Criteria: * Informed consent signed and dated * Male or female participant from 4 years to less than 18 years old. * Participant with grading score of 3 or 4 on the Bonini scale for clinical grading of VKC in each eye. Main Exclusion Criteria: Participants must not have any conditions which might exclude them from participating, could interfere with the study, or pose an unacceptable risk to their health.