OK people, I'm at work right now and I've been thinking? There is a device today that is used by eye doctors to help correct vision problems. Here is the links:
http://en.wikipedia.org/wiki/Intraocular_lens
http://en.wikipedia.org/wiki/Intraocular_l..._contact_lenses
If you notice, the second link is for a contact lens that is implanted into the eye. You can get a "skinlinked" contact lens with vision enhancement at character gen (without Restricted gear) that has the following: Low-light vision, Flair Comp, and Image Link. With restricted gear you can add Vision Enhancement 3 and smartlink.
If you are a metahuman and don't need low-light or thermo, then you can replace low-light with Vision Magnification. There would be no change in price.
This contact lens cost? 1075 . 1075 to have a device that is implanted in the eye and I don't think it would have ANY Essence impact because it isn't hooked up to ANY nerves and because of the skinlink you would still have "DNI" capabilities. It's like having a RFID tag implanted in you, a RFID tag costs no Essence.
You could even take my idea and go a little further. Disguise a Olfactory Booster as a nose ring and skinlink it. Instant "cyberware" without any Essence loss and costs less too. Also VERY easy to upgrade to boot.