Rick Sowadsky, Senior Communicable Disease Specialist, Nevada AIDS Hotline Coordinator has this to say about semen in the eyes:
Getting semen in the eye is certainly a possibility of transmission.
Transmission of HIV through the eyes is definitely possible. In fact, it has
been mentioned in one report that someone became infected when semen got into
their eye. Also, blood getting into the eyes can also be risky. This is why
healthcare workers (like dentists) wear eye goggles when doing procedures
that have a likelihood of blood getting into the eyes. The linings of the
eyes are made of mucous membranes. HIV can easily pass through mucous
membranes. When something gets into the eye, the first thing that people
naturally do is rub their eyes. This can easily cause microscopic cuts and
abrasions in the mucous membranes lining the eyes. Since semen contains high
concentrations of HIV, and since there is a distinct possibility of HIV
getting into the bloodstream through the eyes (especially if you rub your
eyes), it would not be surprising for HIV to be transmitted in this way.
Since it is unusual for semen to get into the eye (but certainly a
possibility), there have not been many reports of HIV transmission this way.
But if this is how you got potentially exposed, based on our knowledge of HIV
transmission, it would not be surprising if this was how you became infected.
So if this happened to you, you could have become infected from oral sex, or
through semen in the eye.