Int J Ophthalmol. 2016 May 18;9(5):703-6. doi: 10.18240/ijo.2016.05.11. eCollection 2016.
Comparison of two different methods of preoperative marking for toric intraocular lens implantation: bubble marker versus pendulum marker.
International journal of ophthalmology
Javed Hussain Farooqui, Archana Koul, Ranjan Dutta, Noshir Minoo Shroff
Affiliations
Affiliations
- Cataract and IOL Services, Shroff Eye Center, New Delhi 110048, India.
PMID: 27275425
PMCID: PMC4886884 DOI: 10.18240/ijo.2016.05.11
Abstract
AIM: To compare the accuracy of two different methods of preoperative marking for toric intraocular lens (IOL) implantation, bubble marker versus pendulum marker, as a means of establishing the reference point for the final alignment of the toric IOL to achieve an outcome as close as possible to emmetropia.
METHODS: Toric IOLs were implanted in 180 eyes of 110 patients. One group (55 patients) had preoperative marking of both eyes done with bubble marker (ASICO AE-2791TBL) and the other group (55 patients) with pendulum marker (Rumex(®)3-193). Reference marks were placed at 3-, 6-, and 9-o'clock positions on the limbus. Slit-lamp photographs were analyzed using Adobe Photoshop (version 7.0). Amount of alignment error (in degrees) induced in each group was measured.
RESULTS: Mean absolute rotation error in the preoperative marking in the horizontal axis was 2.42±1.71 in the bubble marker group and 2.83±2.31in the pendulum marker group (P=0.501). Sixty percent of the pendulum group and 70% of the bubble group had rotation error ≤3 (P=0.589), and 90% eyes of the pendulum group and 96.7% of the bubble group had rotation error ≤5 (P=0.612).
CONCLUSION: Both preoperative marking techniques result in approximately 3 of alignment error. Both marking techniques are simple, predictable, reproducible and easy to perform.
Keywords: bubble marker; pendulum marker; toric intraocular lens
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