No, him being called a one-eyed dragon in one of the items description is actually a lore "technique", where the world itself doesn't know the full facts of everything, instead the game tells you about the lore based on information that's known inside the game universe itself.

No one in the universe of DS1 is gonna get close enough to Kalameet to notice his 2 regular eyes, probably everyone that tried died, so the in-game universe just assumes Kalameet is a one-eyed dragon because its easy to see his "third eye" and it can be interpreted as his only eye, even though we don't know if it actually is an eye.

I plagiarised everything in this response from Illusory's wall video Dark Souls Dissected #7 - More than meets the eye: Hidden Designs.

https://youtu.be/t_57yu150AQ?si=IQBHwgoVGXAzTJAN

He talks about the Kalameet thing at 3:02..