Illustration of the Smile technique , refractive surgery that treats myopia and astigmatism. -Image 1, the laser cuts out a small lens that is more...激光, 眼睛
Illustration showing photorefractive keratectomy , refractive surgery that treats myopia, astigmatism, hyperopia and presbyopia. It is the oldest of...眼睛
Illustration showing Lasik, laser-eye surgery, which treats myopia, astigmatism, hyperopia and presbyopia. -Image 1, the first laser cuts a flap in...眼睛
Lithograph by J K Maguire, published by George Ransome of Ipswich, showing the English astronomer and geophysicist, Sir George Biddell Airy . Airy...
Photograph by John Watkins of Sir George Biddell Airy , who was Astronomer Royal and director of the Royal Greenwich Observatory from 1835 to 1881....舊皇家天文台
Photograph by John Watkins of Sir George Biddell Airy , who was Astronomer Royal and director of the Royal Greenwich Observatory from 1835 to 1881....
Photograph by Maull & Polyblank of Sir George Biddell Airy , who was Astronomer Royal and director of the Royal Greenwich Observatory from 1835 to...天文學家
Photograph by Maull & Polyblank of Sir George Biddell Airy , who was Astronomer Royal and director of the Royal Greenwich Observatory from 1835 to...
Photograph of a pyramid fitting containing a collection of white and coloured spectacle lenses produced by the opticians M W Dunscombe Ltd for the...
Lithograph by J K Maguire, published by George Ransome of Ipswich, showing the English astronomer and geophysicist, Sir George Bidell Airy . Airy was...
