Even a practice under 3,000 SF can benefit from having a small "tech station" where technicians can use a lensometer, do paper-work and keep an eye on the exam rooms. In larger offices a tech station is almost a necessity if you want maximum productivity for your techs. Give them a computer, a file drawer and any other equipment they need.
The placement of a tech station is critical. Techs need to see what is going on, who needs help, and who is ready to move in or out of an exam room. The need for these visual sight lines must be anticipated by the designer and created in the floor plan stage of the design. If a tech station has not been planned in from the start it's unlikely that you'll have space to add one later.