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 looks forward and back". On 12 May 2013, a week before the official premiere of "The Name of The Doctor", it was announced that 210 "Doctor Who" fans in the United States had received their Blu-ray box set of the second half of the seventh series early due to a production error. After successfully requesting that they not reveal the plot, the BBC sent the recipients copies of an interview with the cast. Moffat later complimented the "210 of them, with the top secret episode in their grasp – and because we asked nicely, they didn't breathe a word." "The