Inclusion Criteria:  all pediatric patients 0-16 years age advised for at least 3 follow up visits within 4 months period (January 2021 to April 2021) at Bharatpur Eye Hospital Patients who require weekly, bi-weekly (fortnight), or monthly follow up visits, In certain conditions, some severe cases require earlier follow up than the scheduled follow up schedule, those cases will be included, Parents/guardians of children who own a mobile phone or have daily access to a phone and are able to use the SMS (Short Message Sending) feature on these phones, Parents of children willing to enroll their children in the study  Exclusion Criteria:  Children who require less than 3 follow up visits, Ocular conditions requiring daily follow up visits will be excluded because it is not feasible to send the reminder phone call and SMS for daily follow up Children who have already been treated and under regular follow up, Children with ocular conditions requiring to follow up beyond four months, Children whose follow up schedules fall beyond the study duration, Parents/ guardians of the children not willing to participate in the study.