Abey Sir, Main Confused Hoon!

Kya IPC ke Section 320 mein 'grievous hurt' ke definition mein 'permanent disfigurement' ka implication kaafi zaroori hai kahaani mein? Kya yeh shabda sirf doctor ki report se hi proven ki ja sakti hai ya fir court ko doosri saabit karne ki aazadiyat aur bhi hai? Maine kuch cases read ki hain, lekin yeh sawaal khatam nahi hua. Koi insight dene ki koshish kijiye. Mere online classes abhi baar power cut ho gaye hain, toh main apne notes padhne ke liye abhi yahaan hoon.