That article misrepresents the photo (as evidenced by the original source video I linked to) and doesn't present any sources to back up its claim that any of the panda eyes shown are caused by sex abuse.

The only pieces of media on that page that look like they are verifiably from abused children are the video on the right hand side of the page (the boy in the video doesn't have panda eyes) and possibly the boy in the photo on the very top left of the square of photos on the page (who doesn't have panda eyes but has significant facial and neck injuries indicating head trauma, possibly but not definitely from a beating).

I was able to trace back one of the panda eyes photos on that page to its original source, a medical article about a boy who had suffered cranial trauma.

https://www.jem-journal.com/article/S0736-4679(09)00684-2/abstract

As you can see, he also had forehead bruising, indicating a head injury.

There are many people in law enforcement (including a former crime scene investigator who I personally know, who worked some horrific cases including one in which a 2-year-old girl had been raped to death by a Satanist) and medicine who have worked with sexually abused children, including those who were anally raped, and none of them have ever reported panda eyes resulting from this sexual abuse.

Panda eyes are always caused by head trauma, usually intracranial bleeding (which can be caused by beatings, car accidents, and various other causes). The rectum is so far from the head that no amount of trauma to it can cause the panda eye effect, even in a small child. A pedophilia victim can of course have panda eyes, but only from having also suffered head trauma.