Below are some suggestions for things to consider, here for information rather than as requirements. We're open to all kinds of ideas so please feel free to be pretty creative with the design and with the text.
1) The tag line is not vital, it could be left out or changed to something else if you have a better idea.
2) We're slightly concerned about the similarity of the name "Visō" to the debit card, "Visa" and so we are keen to differentiate our logo from theirs, maybe by adding an extra word to that line, e.g. "simulator".
3) We need to differentiate the tool from other optical simulation tools, e.g. Luma: http://www.eyemaginations.com
3) The logo needs to convey trustworthiness and value to medical professionals, and approachability and hope to patients.
4a) It would be good if we could include an echo from our organisation logo (OCVLogo.png attached), to draw the connection between the two.
Our blue is: CMYK: 77,13,27,0 and our grey is: 64, 55, 52, 27.
Our fonts are Myriad Pro and Century Gothic.
But please note that we do not want to only emphasize the dot pattern from the current logo because this only relates to one vision condition, and as mentioned above the logo needs to be generic to all vision conditions. Maybe the same type of shape could be expressed in a different way, e.g. sample.gif attached.
We would be open to changing the existing logo slightly to come into line with the new one if necessary, particularly the font.