The Luckiesh-Berens tangent screen illuminator.
BERENS
C
C
LUCKIESH
M
M
D004864:Equipment and Supplies; D006801:Humans; D008027:Light; D008029:Lighting; D009885:Ophthalmology / Q000295:instrumentation*
APPARATUS; LUCKIESH-BERENS ILLUMINATION; OPHTHALMOLOGY/apparatus