The doctor pretty much knows what a persons prescription is before he asks them a single question. Computer evaluation of your present glasses or contacts. Based on the speed of light being constant, the instrument determines the lens power. It s much more accurate than the old way. Computerized peripheral visual field testing to help detect eye disease.
Many eye diseases first effect side vision, which is difficult for most people to notice.
In computerized field testing, you just look straight ahead and push a button when you see a light. The computer keeps track of how bright the light was, where it was and if you see it. It does a statistical analysis of the results to determine the probability of eye disease being present. It is very helpful in diagnosing glaucoma. Photography of the eyes interior to help detect disease in the future.