Diffuse BSDF texture on cycles doesn't reflect the Hdri in some parts? i was creating a 3D Eye on Blender and i added a Diffuse image texture map, and it reflects an Hdri image, as you can see, the blue part of the eye doesnt reflect this (fig 1.), it's weird since it's only a single geometry with a single texture...It is possible to make it look better, like the image is reflected on all the geometry? (fig 2.)
Does anyone know what to do?
Or how can i make the Fig 1. looks like exactly the Fig 2.?
The reflection is working properly, the problem is that your eye model is not a perfect sphere. the area that is extruded inwards distorts the reflection. 

To make it look like a physical eye you will need to create another sphere outside of the one you have and set it as a glass shader. then you will have the reflections you want.