***[link|https://www.ifixit.com/User/4217877/nfn+Muhammad|nfn Muhammad|new_window=true] l***ooks like a crack but looks can be deceiving. I suggest a crack detection with dye penetrant testing (PT). Get some fluorescein and wipe in on the lens. Let it sit for a short time (15-30sec) then simply wipe it off. Now use a UV light and shine it on your lens. If it’s a scratch you can wipe it off, it it's a crack the dye will have penetrated into the crack and continue to shine under the UV light.