Effects of multifocal and monovision single-focus intraocular lenses implantation on visual function recovery for bilateral cataract patients

Objective To compare the visual function recovery of bilateral cataract patients with bilateral multifocal intraocular lens implantation and monovision single-focus intraocular lens implantation. Methods The study was conducted using the prospective method. One hundred and ten eyes of 55 cases of bilateral cataract were enrolled. The patients were divided into two groups: monocular vision single-focus intraocular lens mplantation group (SIOL, 60 eyes of 30 cases) and multifocal intraocular lens implantation group (MIOL, 50 eyes of 25 cases). Patients in SIOL group adopted the monovision design the dominant eye was treated with emmetropization while the other was treated with hypometropia. Parameters were measured 90 days postoperatively which consisted of visual acuities, stereo scopic vision, contrast sensitivity, and patient's satisfaction. Results The contrast sensitivity, 63 cm intermediate visual function, 5 m distance visual acuities, and patient's satisfaction had no significant differences between two groups (P>0.05). The 30 cm near visual acuities in SIOL group were significantly better than that in MIOL group (P 0.05). Conclusion Both SIOL and MIOL achieved distance vision and acceptable recovery of visual function for cataract patients. Compared with MIOL, SIOL had lower costs, there for it was visual recovery plan recommended for a clinical practice. Key words: Cataract; Lens, intraocular, multifocal, single-focus; Monocular vision