Autofluorescence features of congenital grouped albinotic spots of the retinal pigment epithelium: Polar bear tracks

Two patients, one a 28-year-old male and the other a 10-year-old female, were referred for retinal examination due to white lesions [Fig. 1a and b]. Both patients were asymptomatic with 20/20 vision. The first patient had hypopigmented bear track lesions in the superonasal aspect of the left retina with slight pigmentation. The corresponding autofluorescence (AF) was hypoautofluorescence. The other patient had similar, predominantly whiter lesions in the inferonasal and inferotemporal quadrants with corresponding hyperautofluorescence. A diagnosis of congenital grouped albinotic spots of the retinal pigment epithelium, also known as polar bear tracks, was made for both eyes. These lesions are seen in two individuals of different ages, and we believe the AF features are probably age dependent.Figure 1: (a) Left eye automontage image showing presence of small hypopigmented lesions in a group in the superonasal quadrant of the retina. These lesions morphologically look similar to animal tracks and have slight hint of pigmentation. These lesions have surrounding dark-without-pressure–like appearance in the affected quadrant of the retina. The corresponding autofluorescence image shows these lesions to exhibit hypoautofluorescence. Similar lesions are seen nasal to optic disc, which are evident on magnification of the image. (b) Right eye automontage image showing two distinct clusters of hypopigmented lesions in the inferonasal and inferotemporal quadrants of the retina. These lesions exhibit bright hyperautofluorescence. Similar to Fig. 1a, small hypopigmented lesions are evident as hyperautofluorescence at the macula, inferotemporal to the fovea, and are not clearly evident in the image without magnificationDeclaration of patient consent The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed. Financial support and sponsorship: Hyderabad Eye Research Foundation. Conflicts of interest: There are no conflicts of interest.