Eye chart smaller towards the bottom of the chart. The person removes any glasses or contact lenses, and stands or sits a standardized distance from the chart (e.g., 20 feet for the Snellen chart). The person is then asked to identify the optotypes on the chart, starting with large rows and continuing to smaller rows until the optotypes cannot be reliably identified any more. The row in which the person can reliably identify symbols defines the visual acuity. One eye is tested at a time. Practically, this is accomplished by covering the other eye with a hand, piece of paper, or a
The Eye of the Giant is forced to admit the truth, but Grover refuses to abandon his expedition on the word of people who claim to have travelled through Time. In order to prove his story, the Doctor suggests that Mike show Grover the “statue” in the pit, which the Doctor believes is in fact a dead alien in a life support suit. Upon arriving at the pit, the Doctor studies the statue for himself and finds a storage unit containing two Semquess drug vials and one empty space; he concludes that the third vial must have broken open in the past, releasing chemicals which