When performing open source work, it's important to consider the diverse range of contributors who are interested in helping. Thank outside code reviewers for the extra set of eyes over your code, not the extra pair. You never know if it's a spider behind the keyboard!
The full story (which I've mostly forgotten) has gone around a number of times recently but take note that the Multiocular O ꙮ occurred in one copy of Psalms circa the early 1400s, and has been immortalized as part of Unicode since 2008 (with a revision just last year to accurately reflect the original number of eyes - 10, not 7). The original phrase means "many-eyed seraphim". It's the only use of Multiocular O, but not the only in its family...
It was apparently one of a number of "ocular" characters which were more commonly present in contemporary Slavic (religious?) texts. Part of a discussion in a reddit thread:
For Slavic medievalists, the UC Berkeley Script Encoding Initiative came up with a 2007 "Proposal to encode additional Cyrillic characters in the BMP of the UCS" where the character in the question occurs. But to be particular, it is one of several, all used in words with a root of 'eye'; the singular has one dot in each of the circles, representing single eyes, whereas the dual has two. The multi-eyed seraphim is just one of the inclusions in the proposal, and while the latter is only known to occur in one manuscript, the others occur in several. So it is a special case, but related to ones that were common enough to justify their inclusion.
(As far as why historically the Os as part of eyes got the rare ornamental touch, there is at least some evidence of belief in mystical power of letters themselves. The monk Khrabr in the 9th century wrote the treatise On Letters defending the local language and opining about the power of each letter in Glagolitic, a custom Slavic alphabet devised by Saint Cyril who found that the languages of the Slavic tribes did not translate easily to Greek or Latin letters. Glagolithic influenced the development of Cyrillic. Going later to the 12th century, Kirik of Novgorod contemplated if it was a sin to step on letters. As the historian Simon Franklin writes, "an alphabet can be an amulet" -- although he cautions that this theorizing perhaps did not apply too much in real practice.)
Also included in the Unicode proposal are monocular O Ꙩ, binocular O Ꙫ, and double monocular O Ꙭ — there are many more of interesting description and linguistic use, so check the PDF out if it interests you! (It's a big PDF but all the layarachnid's details are in the first six pages, with many succulent figure photographs — such as the two embedded below — in pages 21 all through 48.)
Besides the detailed history, isn't it just such a cool looking glyph? ꙮ
