This is a single-head study that will take place at the National Ophthalmology Hospital Center (CHNO) and the Vision Institute (Streetlab) and the total duration of the study is 24 months .~It is planned to include 60 participants divided into different groups:~15 healthy subjects, called controls.~15 patients with retinitis pigmentosa.~15 patients with Leber's hereditary optic neuropathy.~15 patients with Stargardt's disease.~Patients will be pre-selected on files at the CHNO clinical investigation center based on the visual assessment carried out on the day of their arrival, the doctor may suggest that they participate in the study if the inclusion criteria are respected.~The control subjects will be recruited thanks to the database of the Vision Institute at Streetlab.
The development of new oculometry techniques allows fine and dynamic measurements of pupillary diameter and use in routine clinical practice.~The preliminary results obtained with innovative devices on healthy sjuets make it possible to envisage a clinical study on a population of patients suffering from retinal pathologies.~This is a proof of concept study, which, if the expected results are confirmed, will make it possible to consider a study on a larger population, as well as the industrial development of a commercial device.