Arch Ophthalmol. 2003 Mar; 121(3): 403-7.

Clinicopathologic reports, case reports, and small case series: peripheral pigmented corneal ring: a new finding in hypercarotenemia.

Rahmani B, Jampol LM, Feder RS.

Department of Ophthalmology, Feinberg School of Medicine, Northwestern University, 645 N Michigan Ave, Suite 440, Chicago, IL 60611, USA.