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KMID : 0213520140280020150
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Korean Journal of Ophthalmology
2014 Volume.28 No. 2 p.150 ~ p.154
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Changes in the Accommodation-convergence Relationship after the Artisan Phakic Intraocular Lens Implantation for Myopic Patients
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Ryu Ik-Hee
Han Ji-Nu
Lee Hyung-Keun
Kim Jin-Kook
Han Sueng-Han
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Abstract
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Purpose: To evaluate the change of accommodation-convergence parameters after implantation of Artisan phakic intraocular lens (PIOL).
Methods: 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.
Results: 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.
Conclusions: 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.
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KEYWORD
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Convergence, Ocular accommodation, Phakic intraocular lenses
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