English: This image depicts a close view of a patient’s left eye, revealing the presence of cloudy corneal spots, which are known as interstitial corneal keratitis, and were the result of a case of late congenital syphilis, caused by the bacterium, Treponema pallidum. If not immediately treated, babies may become developmentally delayed, have seizures, or die. Symptoms may not become initially apparent, but can develop within a few weeks. These signs and symptoms can be very serious.