Scientists studying the Zika outbreak in Brazil are becoming increasingly concerned the virus may cause eye damage in babies.
Stanford University researchers found abnormal bleeding and lesions in the eyes of three infant boys whose mothers had caught Zika while pregnant.
They want any babies known to be affected by Zika to have eye checks.
The journal of Ophthalmology findings follow another recent study that saw similar eye problems in Zika babies.
The disease is already known to cause a serious baby brain defect called microcephaly.
What is not clear is whether eye problems might be a complication of this rather than the Zika infection itself. Either is possible.
All of the three infants the researchers from Stanford and the University of Sao Paulo examined also had microcephaly.