Purpose: To evaluate peripheral refraction and image quality in a physical model of the pseudophakic eye where the axial position of the intraocular lens (IOL) and the radius of curvature of the retina could be varied. This device is used to compare the performance of a standard Monofocal IOL to a new type of IOL with an inverted meniscus shape designed to improve peripheral image quality.
Methods: The model of the pseudophakic eye had realistic dimensions with a cornea made of PMMA (radius of curvature 7.73mm, conic constant -0.24) an iris at a depth of 3.55mm (3mm pupil) and an IOL holder with variable distance (0.5 to 1.5mm) from the pupil, simulating a postoperative anterior chamber depth ranging from 4.05 to 5.05 mm. The volume of the artificial eye was filled with distilled water. A board level camera (DFM 72BUC02-ML, Imaging Source, Germany) in a water-tight container with a 200μm glass window was introduced to allow direct recording of retinal images. The camera was mounted on a rotating base where the center of rotation was on the optical axis of the system and the radius ranged from 11 to 13 mm to model different retinal radii of curvature. For each field angle (0, 10, 20, 30 and 40 degrees) the retinal image was optimized for spherocylindrical error using trial lenses. Two types of IOLs were evaluated: a standard monofocal (CT Lucia601P, Zeiss, Germany) and a new meniscus shaped one (ArtIOL, Voptica SL, Spain).
Results: Average refractive outcomes were -0.10 ±0.40 D, range [-0.75, +0,50], for spherical equivalent and 0.68±0.40 D, range [0.00, 1.50], for astigmatism. Best corrected VA was equal or better than 0.0 LogMAR in 95% of the eyes, all better than 0.2 LogMAR. No surgery complications were noted during the Art25 implantation and no adverse events were reported at one-month follow-up except one posterior capsular opacification.
Conclusions: The implantation of Art25 IOL provided null or small refractive errors and excellent visual acuity with a level of safety like any standard IOL.
