Changes in the Accommodation-convergence Relationship after the Artisan Phakic Intraocular Lens Implantation for Myopic Patients

• Published in: Korean journal of ophthalmology Vol. 28; no. 2; pp. 150 - 154
• Main Authors: Ryu, Ik Hee, Han, Jinu, Lee, Hyung Keun, Kim, Jin Kook, Han, Sueng-Han
• Format: Journal Article
• Language: English
• Published: Korea (South) The Korean Ophthalmological Society 01.04.2014; 대한안과학회
• Subjects: Accommodation, Ocular; Adult; Convergence, Ocular; Female; Follow-Up Studies; Humans; Lens Implantation, Intraocular - methods; Male; Myopia - diagnosis; Myopia - surgery; Original; Phakic Intraocular Lenses; Postoperative Period; Prospective Studies; Refractive Surgical Procedures - methods; Treatment Outcome; Visual Acuity; Young Adult; 안과학; Ocular accommodation; Phakic intraocular lenses; Convergence
• ISSN: 1011-8942; 2092-9382; 2092-9382
• DOI: 10.3341/kjo.2014.28.2.150

To evaluate the change of accommodation-convergence parameters after implantation of Artisan phakic intraocular lens (PIOL). Prospective study for the patients with the Artisan PIOL implantation was performed. A total of 37 patients (3 males and 34 females) enrolled the study. Preoperatively, convergence amplitude, the stimulus accommodative convergence per unit of accommodation (AC/A) ratio and the near point of convergence (NPC) were evaluated. After the Artisan PIOL implantation, the identical evaluations were repeated at 1 week, 1, 3, and 6 months after the surgery. Mean age was 24.3 ± 4.8 years old, and preoperative refractive error was -8.92 ± 4.13 diopters (D). After the implantation, mean refractive errors significantly decreased to within ±1.00 D, and noticeable complications were not found. The convergence amplitude and the stimulus AC/A ratio increased 1 month after the surgery, but progressively stabilized afterward to near preoperative values. NPC didn't show any significant change over follow-up period up to 6 months. These results regarding implantation of the Artisan PIOL revealed the increase of accommodation-convergence relationship within first 1 month after the surgery, but progressive stabilization was noted during follow-up periods.