Near visual outcomes with single-optic and dual-optic accommodating intraocular lenses.
OBJECTIVE
To compare the visual and ocular optical performance in eyes with a single-optic or a dual-optic accommodating intraocular lens (IOL) with particular attention to near-vision outcomes.


METHODS
Vissum Instituto Oftalmológico de Alicante, Miguel Hérnandez University, Alicante, Spain.


METHODS
Prospective consecutive nonrandomized interventional comparative clinical study.


METHODS
Eyes with cataract were divided into 2 groups. Group A had implantation of a single-optic accommodating IOL (Crystalens HD) and Group B, of a dual-optic accommodating IOL (Synchrony). Distance and near visual acuities, contrast sensitivity, ocular aberrations, reading performance, and the defocus curve were evaluated over a 6-month postoperative follow-up.


RESULTS
Group A comprised 27 eyes and Group B, 26 eyes. The patient age ranged from 59 to 82 years. Uncorrected and corrected distance visual acuities were significantly better in Group B (P≤.04). There were no significant between-group differences in near or intermediate visual vision (P≥.13). In the defocus curve, Group B had significantly better visual acuities at several levels of defocus (P≤.04). The ocular Strehl ratio and contrast sensitivity were also significantly better in Group B (P≤.04). Group A had higher postoperative total and higher-order root-mean-square aberrations (P≤.01). The incidence of posterior capsule opacification was significantly higher in Group A (40.7%) than in Group B (11.5%).


CONCLUSIONS
Both IOLs restored distance visual function after cataract surgery with limitations in near visual outcomes. Eyes with the dual-optic IOL had significantly better ocular optical quality.
Vissum Corporation, Universidad Miguel Hernández, Alicante, Spain. jlalio@vissum.com
Jorge L
JL
Alió
Ana B
AB
Plaza-Puche
Raúl
R
Montalban
Paula
P
Ortega
D000065:Accommodation, Ocular / Q000502:physiology*; D000368:Aged; D000369:Aged, 80 and over; D015350:Contrast Sensitivity / Q000502:physiology; D057108:Corneal Wavefront Aberration / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011446:Prospective Studies; D011474:Prosthesis Design; D019591:Pseudophakia / Q000503:physiopathology*; D011932:Reading; D012029:Refraction, Ocular / Q000502:physiology*; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology*