PT  - JOURNAL ARTICLE
AU  - Jorge Alio
AU  - Aarti Dua
AU  - Arun D Singh
AU  - Harminder S Dua
TI  - Roman Ptolemaic instruments
AID  - 10.1136/bjophthalmol-2011-301291
DP  - 2012 Jan 01
TA  - British Journal of Ophthalmology
PG  - 20--20
VI  - 96
IP  - 1
4099  - http://bjo.bmj.com/content/96/1/20.short
4100  - http://bjo.bmj.com/content/96/1/20.full
SO  - Br J Ophthalmol2012 Jan 01; 96