斯耐伦视觉图片

Snellen's chart

Snellen chart

Chilo infuscatellus Snellen【植保】;Chilotraea infuscatella【植保】;millet borer【植保】

Snellen test【眼科】

Snellen's test-type

millet borer, {Chilo infuscatellus} Snellen

Snellen's sign

Snellen's reform eye