To investigate the clinical findings and differential diagnosis of incidental unilateral discoid maculopathy in a case series of children. METHODS The medical records and retinal imaging of children referred to a single center for flat, well circumscribed, hypopigmented discoid macular lesion in the left eye were reviewed retrospectively. RESULTS Three children (age range, 4-11 years; 2 female), with no subjective ophthalmic complaints, were referred for investigation of a flat, well-circumscribed, hypopigmented discoid macular lesion in the left eye. Case 1 had a history of viral mesenteric adenitis, and case 2 had a history of hand, foot, and mouth disease. For case 3, no previous history of systemic viral infection was established. Snellen visual acuity was 20/20 for all 3 children. The lesion was located superior to the fovea for case 1 and centered to the fovea for cases 2 and 3, all in the left eye. In all 3 patients, hyperautofluorescent changes were noted around the edges of the lesion, which was roughly discoid. OCT showed subtle changes of the interdigitation zone and retinal pigment epithelium (RPE) for cases 1 and 2. In case 3 the presence of hyperreflective, hypertrophic tissue at the level of the interdigitation zone and/or the RPE was noted. CONCLUSIONS In these 3 children with subclinical, unilateral discoid maculopathy sharing common features and identified incidentally, previous viral illness may have been causative. These cases may represent resolved unilateral acute idiopathic maculopathy. (J AAPOS 2020;-:1.e1-6) I n recent years, the number of incidental findings and referrals across all the disciplines of medicine, including ophthalmology, has increased because of screening programs and developments in medical imaging. 1,2 The epidemiological data for incidental findings are limited and difficult to collect, because they involve private practice and public hospitals, optometrist, ophthalmologists, and other disciplines, as well as screening programs and routine checkups. Incidental findings can be benign or malignant, inflammatory, infectious , inherited, or congenital-developmental. We present a case series of 3 children with a benign, unilateral discoid maculopathy, sharing common features, identified incidentally, and referred to a tertiary eye center for further investigation. Methods This study complies with all local laws and the principles of the Declaration of Helsinki and was approved by the Moorfields Eye Hospital Ethics Committee. The patients were examined by medical retina specialists, in Moorfields Eye Hospital, London. All available clinical notes and retinal imaging were reviewed. Further detailed medical history was requested from the caring general practitioners of the children. Results Three children (age range, 4-11 years; 2 female) were referred after presenting to their local optometrist for routine eye examination, with no subjective ophthalmic complaints, on discovery of an unusual left circular macular lesion (Figures 1-3). All 3 children denied any visual disturbanc...