As both a campus-based and online instructor I have found it imperative to maintain good eye contact in order to ensure students are comfortable and engaged in the classroom. One of the pertinent articles that I've discovered online discusses 6 ways to framatically improve your eye contact skills.
Of course when conducting a lecture online you must maintain eye contact in a much different fashion thatn in the traditional classroom. For example, I make it a practice to continually encourage students to share their experiences that pertain to the topics of discussion. I also draw them into illustrations by using their names and their current occupations.
Food for thought anyway.
Dave
Reference.
http://www.stevenaitchison.co.uk/blog/6-ways-to-dramatically-improve-your-eye-contact-skills/