The light accommodation effect of the intraocular photochromic blue light-filtering Matrix Acrylic 400 lens

Objective To evaluate light accommodation effect of the intraocular photochromic blue light-filtering IOL (Matrix Acrylic 400 101) under the natural light. Methods Forty-two age related cataract patients (59 eyes) were divided into three groups in random. These three cataract groups were 'implanted Matrix Acrylic 400 IOLs, Acrysof Natural SN60AT IOLs and Matrix Acrylic 401 IOLs respectively. The visual acuity and logMAR vision of these cases were recorded at I day, 7 days, 1month, and 3 months afier operation, respectively. The photochromic changes of these IOLs were evaluated indoor and outdoor environment at the same time. Results There were no significant differences in the aspects of distance visual acuity, corrected distance visual acuity and logMAR vision of all patients in photopic condition. The logMAR vision of SN60AT IOLs group was lower than the other two groups in scotopic 5% contrast condition (P <0.05). The Matrix Acrylic 400 IOLs and the SN60AT IOLs were yellow, but the Matrix Acrylic 401 IOLs were transparent under the sunlight outdoor environment. The SN60AT IOLs were still yellow, but the Matrix Acrylic 400 IOLs and the Matrix Acrylic 401 IOLs was transparent at indoor environment. Conclusions Matrix Acrylic 400 IOL changes to yellow at outdoor and retums to transparent at indoor. Under scotopic condition of 5% contrast, the logMAR vision of the 400 IOL group is better than that of the blue light-filtering IOL group. Key words: Lenses;  Intraocular;  Cataract;  Photochromic;  Blue light-filtering