On December 3rd of 2019, an online meeting was held with the primary investigator and managerial and executive members of the PERSIAN Birth Cohort. In this meeting, “Dental Hygiene” project was reevaluated and suggestions on facilitation of its implementation were reconsidered.  A new project on visual status and the prevalence of eye disorders was introduced as well, and the team provided their recommendations for the better application of the project. Also, the status of the process of quality assessment of the collected data was discussed. Finally, attendees were clarified on their worries and questions regarding the “PERSIAN Neurodevelopment” application which was introduced in the last session.