ARL6 and Bardet-Biedl syndrome: Among the 6 clinical features of BBS, retinitis pigmentosa is the most frequent at 90% to 100%[36] and about 20% were retinitis pigmentosa sine pigmento.[37] Although there are no reports on whether the ocular findings differ according to the genotype, a paper reporting the fundus findings of 12 patients between the ages of 4 and 17 years diagnosed with BBS3 reported that they had moderate myopia and had retinitis pigmentosa sine pigmento.[38]