There are lots of expensive stands on the market that position a notebook computer well above the desk- or tabletop you're working at so the display is at eye level, and are intended to be used with an external keyboard and mouse because the built-in keyboard and trackpad will then be at an unusable height. As as alternative to such costly solutions, or as a test of their effectiveness for your purposes before you spring for one, try using a stack of books or a suitably-sized cardboard box, topped with a stiff board for the MBP to sit on, to bring the MBP's display to eye level. Of course you'll need to buy a keyboard and a mouse or trackball to give this a fair trial in actual use, but you'll have to buy those anyway. If you find after 2-4 weeks that having your display at that height is what you want, then you can investigate some of the available stands with greater confidence that you're going to get something useful. (Or you can save your money and keep using what is already working for you at no cost.)
One thing to which you should pay particular attention is how far away your screen is really legible for you without causing eyestrain. If a pile of books with the MBP's lower case sitting flat on top of it and the keyboard in front of it moves the screen too far away for you to see it well, you'll end up leaning toward it, and that may completely negate the ergonomic benefit of raising the screen higher. In that case, a stand that holds the base of the computer on a steep incline, thus permitting the screen to be closer to you, may be necessary. Alternatively, a level shelf above the desktop with the keyboard and mouse underneath it (instead of between you and it) may work to bring the screen closer at the right height, depending on whether or not you need to see the keyboard or other items on your desk while you type.
