Perbandingan laser fotokoagulasi panretinal 532 NM durasi 20 MS dosis tunggal dan100 MS dosis tunggal serta terbagi terhadap ketebalan makula sentral (pada severe non-proliferative diabetic retinopathy dan non-high risk proliferative diabetic retinopathy) = Comparison of 532 NM panretinal laser photocoagulation of 20 MS duration single session and 100 MS duration single session and multiple session toward central macular thickness (in severe non-proliferative diabetic retinopathy and non-high risk proliferative diabetic retinopathy)