Product Numbers：YYJ-01-1  Trial Lens set   
Optometry Rack Set(30 pcs)mainly made of positive and negative sphericaloptometry tablets   

Model：
YYJ-01-1  　S232（Plastic Rim）
YYJ-01-2  　J232（Metal Rim）
YYJ-01-3  　S266（Plastic Rim）

Feature：
Trial lens set case( 266 type, 232 type, 200 type) mainly made of positive and negativespherical lenses ,positive and negative cylindrical prism lenses, auxiliary lenses(Maddox ,stenopaic slit,pinhole lens black , frosted , plano, red filters, blue filters, cross cylindrical lenses)