, ▁affect ing ▁the ▁ret inal ▁p ig ment ▁ep ith el ium ▁( R PE ) ▁and ▁causing ▁progress ive ▁loss ▁of ▁vision . ▁On ▁ 2 4 ▁November ▁ 2 0 1 1 , ▁Mr . ▁Jonathan ▁Wy att , ▁a ▁Br istol ▁bar r ister , ▁received ▁a ▁' good ▁copy ' ▁of ▁the ▁RE P 1 ▁gene , ▁admin ister ed ▁through ▁an ▁ad eno - associ ated ▁virus ▁( AA V ) ▁– ▁ser ot ype ▁ 2 ▁( AA V 2 ) ▁– ▁as ▁a ▁vector , ▁in ▁fluid ▁under ▁the ▁ret ina . ▁By ▁ 2 0 1 6 , ▁the ▁results ▁of ▁the ▁trial ▁appeared ▁both ▁' prom ising ▁and ▁last ing ' ▁and ▁further ▁work ▁was ▁author ised , ▁with ▁a ▁view ▁to ▁seeing ▁whether ▁the ▁process ▁could ▁eventually ▁be ▁applied ▁to ▁more ▁common ▁conditions , ▁such ▁as ▁age - related ▁mac ular ▁deg ener ation ▁( AM D ). ▁▁ 2 0 1 2 / 2 0 1 5 ▁Electron ic ▁Ret inal ▁Im plant ▁Tri als ▁These ▁tri als , ▁fund ed ▁by ▁the ▁N I HR ▁and ▁the ▁Oxford ▁( OU H ) ▁B RC , ▁tested ▁the ▁ability ▁of ▁an ▁electronic ▁ret ina ▁to ▁replace ▁a ▁ret ina ▁that ▁has ▁become ▁dam aged , ▁a ▁development ▁common ▁in ▁patients ▁with ▁the ▁her edit ary ▁condition ▁ret init is ▁p ig ment osa ▁( R P ). ▁The ▁impl ants ▁were ▁developed ▁by ▁German ▁company ▁Ret ina ▁Im plant ▁AG .