You'll need to know your segment height if you want to order progressive replacement lenses from Always Eyes. Don’t worry if your prescription doesn’t include your segment height, we can definitely show you how to measure it your self.
1. Print our downloadable SH ruler.
3. While looking straight ahead, measure the distance from the center of the pupil to the bottom of the frame.
4.Repeat a couple of times for accuracy and use an average for your final measurement.