PT - JOURNAL ARTICLE AU - A J Bron TI - Peripheral ring opacity of the cornea. AID - 10.1136/bjo.53.4.270 DP - 1969 Apr 01 TA - British Journal of Ophthalmology PG - 270--273 VI - 53 IP - 4 4099 - http://bjo.bmj.com/content/53/4/270.short 4100 - http://bjo.bmj.com/content/53/4/270.full SO - Br J Ophthalmol1969 Apr 01; 53