[Clinical application of asphero-iseikonic posterior chamber intraocular lens]

The asphero-iseikonic posterior chamber intraocular lens has the advantages of an aberration and iseikonia. The clinical study of 63 eyes in 62 patients showed that 98.4% of the eyes achieved a visual acuity of 0.5 or better, 84.1% of 0.8 or better, and 79.4% of 1.0 or better. With the distance correction, 90.6% of the eyes achieved a near vision of 0.3 or better and the highest was 0.8. The mean apparent accommodative power in the pseudophakic eyes was 3.11 +/- 0.85 D, and the mean spherical aberration 0.21 +/- 0.21 D. The distance from the anterior apex of cornea to the anterior surface of the implant lens corresponded to the theoretical design. Computer image analysis system confirmed the iseikonic precision. The visual field of all cases was normal and elevation of intraocular pressure occurred in none.