Eye Retina Sitting Down?

my son age is 12 years and 6 months. a straw was hit in his right eye. cornea was damages and was repaired after 7 days due to high infection. now there is no infection but eye is soft and setting down. Doctor asked me for cosmetic surgery only, with silicon oil filling.. can u advise any treatment that eye retina should not set down and vision can be improve..

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