Zika virus has been one of the most debated health-related issues throughout 2016. From doctors, researchers, to ordinary people are trying to study about this virus, but there have been no good news so far. A baby was diagnosed with glaucoma, believed to be caused by Zika virus.

No previous cases showing a link between Zika virus and glaucoma, but there were several cases that babies born from Zika-infected virus suffer from vision problems, researchers stated. Glaucoma is a condition that can damage the optic nerve permanent and cause blindness.

Dr. Albert Icksang Ko said in a statement that he and his team diagnosed the first case where Zika virus can cause glaucoma after the delivery.

Ko,who is also a professor at the Yale School of Public Health, in New Haven, Conn, has been collaborating with doctors in Brazil in diiscovering the various health defects caused by Zika virus. He has been there since the outbreak began in April 2015.

Zika outbreak has reached the US, with 4,000 cases are travel-related and 139 were linked with mosquito, CDC said.

The researchers examined at a 3-month baby born in Salvador, Northeast Brazil exposed to the virus while in a womb. At first, no signs of glaucoma were seen during the time of birth, but later the baby boy had his right eye swollen and developed tears and pain. The diagnose showed that the baby had a glaucoma then doctors performed a surgery to relieve the pain, USNEWS reported.

According to the study authors, glaucoma is another infection caused by Zika doctors should monitor closely. Further research is needed to find out whether glaucoma in infants is caused by Zika virus.

Last week, a surprising research showed that unborn infants exposed to Zika may look normal at birth, but later their head shrink. This defect is called microcephaly.

In that study, scientists discovered that 13 babies in Brazil who were exposed to the virus in the womb had normal head size, but later their heads grew smaller. 11 of them were diagnosed with microcephaly and others with brain defects, researchers explained.