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Phakic IOL shows forward displacement during accommodation
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An iris claw phakic IOL showed anterior displacement during the accommodative process, which occurred along with forward displacement of the natural crystalline lens, a study found. Preoperatively measuring the forward displacement of the natural lens' anterior pole during accommodation may provide additional information about the position of the phakic IOL after surgery, the authors noted.
Using optical coherence biometry (AC Master, Carl Zeiss Meditec), Walter Sekundo, MD, and colleagues evaluated changes in lens position during accommodation in 28 eyes of 17 patients. All eyes had been implanted with an Artisan iris claw phakic IOL (Ophtec) for high myopia either with or without myopic astigmatism.
Researchers observed a forward shift of the IOL, which averaged 70 µm of optical path length and ranged from 8 µm to 178 µm. Concurrently, the anterior pole of the natural crystalline lens showed an average of 85 µm of forward movement, which ranged from 4 µm to 260 µm, according to the study, published in the December issue of European Journal of Ophthalmology.
Advanced Medical Optics markets the Artisan IOL in the United States under the trade name Verisyse.