Then have them turn to a page with you, and discuss what you both see. This helps to bridge the visual gap. Use graphic descriptions, with colors, action, taste, or smell to stimulate their senses. And it doesn't have that sterile, hospital smell. It leaves a pleasant scent, kind of like a bowl of fresh fruit.
Great salespeople have no problem using the phone to describe the results they deliver.
If you can visualize already having attained your goal, you'll be able to reach it. Similar logic can be applied to sales and the buying process. People are most likely to buy when it's easy to see themselves already enjoying the results of your product or service. Make that visual and sensory image easy for them. One way to do this is to refer to objects in the person's environment, or to relate to images that are familiar to the listener.