一起学EnglishPod-20-看眼科医生

vocabulary preview

struggle： you have to try very hard to do sth. 

blurry: not clear

prescription: a message written by a doctor that tells people what medicine to take

20/20 vision: perfect eyesight, 就像我们说的1.5 的视力一样

far-sighted: see far-away things more clearly than things nearby 

near-sighted.unable to see things far away (BrE)

short sighted unable to see things far away (AmE)

as blind as a bat: have really poor vision

optometrist [ɒpˈtɒmətrɪst] : eye doctor

what is it called when you can't distinguish colors?

achromatopsia  英 [əkrəʊmə'tɒpsɪə] 色盲