The iPhone and iPad have some great accessibility features features for people with hearing or sight impairments that makes using iOS more enjoyable and less frustrating. For sight impaired individuals, the Voice Over feature allows your iPhone or iPad to speak selections and add custom gestures so you know exactly what you're tapping on before selecting it.
Whether you yourself are visually impaired or you know an iOS user who is, follow along for instructions on activating Voice Over and how to use it.