Snellen chart H, K, O, S, 3, U, Y, A, C, E, G, L, 2. The normal Snellen chart is printed with eleven lines of block letters. The first line consists of one very large letter, which may be one of several letters, for example E, H, or N. Subsequent rows have increasing numbers of letters that decrease in size. A person taking the test covers one eye from 6 metres or 20 feet away, and reads aloud the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the visual acuity in that specific
The Name of the Doctor The Name of the Doctor "The Name of the Doctor" is the thirteenth and final episode of the seventh series of the British science fiction television series "Doctor Who". It was first broadcast on BBC One on 18 May 2013. It was written by Steven Moffat and directed by Saul Metzstein. The episode was watched by 7.45 million viewers in the UK and received positive reviews from critics. In the episode, an entity called the Great Intelligence (Richard E. Grant) kidnaps Victorian-era detectives Madame Vastra (Neve McIntosh) and Jenny Flint (Catrin Stewart) and their butler Strax (Dan Starkey) to force