Is it me....

[PvtRyan]

... or do the eyes of characters shine more when they're angry/emotioned? Normally, they only have one highlight their eye I think, but when Alyx

Spoiler

Heard of the betrayal of Mossman or said 'this isn't a goodbye' to Eli

her eyes shined more it seemed, with two highlights.

A pic to show what I mean:

 

[Varsity]

Perhaps it's an undeveloped crying technology?

 

[nagual678]

i wouldn't be surprised, this wouldn't be too hard to pull off technically