According to Dr. Bob:
Your risk is presumed spunk in the eye. Assuming the spunker was HIV positive, the estimated risk of acquiring HIV following a mucous membrane exposure is 0.09%. Please note that's direct mucous membrane exposure to HIV-positive spunk! Your estimated risk would be even lower, as we don't know the HIV status of your fitting room phantom.
According to another Dr K.:
Technically, you could be at risk, but ejaculation in the eye isn’t an effective mode of transmission—at all. Your eye has mucous membranes similar to those in your mouth, and oral sex when one might be exposed to cum in the mouth we know has very little risk. The fact that your partner ejaculated outside your body reduces your risk, but consistent condom use with any partner of the opposite status is still the best way to reduce the chance of infection.
Based on this I would not worry too much. You can get tested at 3 months with Oraquick or at 28 days and later with a 4th generation HIV test. A 4th generation HIV test at 6 weeks is considered conclusive in France.
Thank You. I find your response reassuring.