https://phys.org/news/2018-07-infrared-nasa-image-reveals-hurricane.html

At that time, although a banding eye-like feature appeared in visible imagery, it wasn't evident in infrared data, including in the AIRS image.

The National Hurricane Center (NHC) noted on 5 a.m. EDT (0900 UTC) on July 3 "The eye has been observed intermittently on conventional imagery during the past few hours, and the convection surrounding the eye has not changed much."