Perbandingan laser fotokoagulasi panretinal 532 nm durasi 20 ms dosistunggal dan 100 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