Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
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Intraocular lens position following in-the-bag implantation of single-piece versus three-piece acrylic intraocular lenses.

BACKGROUND AND OBJECTIVE: To report the position of the single-piece and three-piece intraocular lenses (IOLs) following in-the-bag implantation.

PATIENTS AND METHODS: Forty patients with bilateral age-related cataracts were recruited from both tertiary hospital and private practice in Montréal, Canada. Patients received the single-piece IOL in one eye and the three-piece IOL contralaterally. Postoperative anterior chamber depth (ACD) and iris-to-IOL distance were evaluated using a Scheimpflug imaging system.

RESULTS: Mean ACD was 4.21 ± 0.32 mm for the single-piece IOL and 3.94 ± 0.34 mm for the three-piece IOL. Mean iris-to-IOL distance was 0.70 ± 0.19 mm for the single-piece IOL and 0.44 ± 0.21 mm for the three-piece IOL. The difference between paired eyes was 0.26 ± 0.20 mm (P = .002) for ACD and 0.25 ± 0.21 mm (P < .001) for iris-to-IOL distance.

CONCLUSION: The single-piece IOL was positioned more posteriorly to the iris and allowed for a greater ACD than the three-piece IOL.

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