McCulloch D, Cummings R W
Am J Optom Physiol Opt. 1984 Jan;61(1):56-60. doi: 10.1097/00006324-198401000-00011.
A 52-year-old black male with Duane's retraction syndrome and fundus pigmentation was examined. The patient had high hyperopia and reported ocular problems in other family members. A battery of tests indicated that the pigmentary anomalies were not due to retinitis pigmentosa.