hello,
as you have retinal attachment surgery with silicon oil, since how many days retina were detached or you were having blurring of vision.
silicon oil is generally removed after 3-6 month. post op vision depends on condition of retina before detachment, present status whether completely attached, macula most important part ofretina is involved or not.it is difficult to restore complete vision if macula is not healty or you have prolonged history of blurring vision.
nevanac is generally given to decrease inflammation and it reduces chances of
cystoid macular edema, also common cause of decrease of vision.
vesoret in anti-oxidant its exact role is not proven but various studies show it is helpful in retinal pathology.
nevanac will not improve your vision, it is given to prevent macular edema.
dont get upset, visit ophthalmologist regulary,
retinal detachment is big surgery, vision completely depends upon condition of retina
take care,i hope i answered your all queries