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Predictability of Post-operative Implantable Collamer Lens Vault Using Intraoperative Optical Coherence Tomography in Myopic Eyes

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First Author: M.Asif INDIA

Co Author(s):    J. Titiyal   R. Bafna   N. Sharma   P. Maharana           

Abstract Details

Purpose:

To correlate the microscope-integrated intraoperative optical coherence tomography (Mi-OCT) guided Implantable Collamer Lens (ICL) vaulting in predicting the post-operative ICL vaulting

Setting:

Dr Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi

Methods:

Forty eyes of 20 consecutive patients undergoing ICL implantation were prospectively evaluated. Vaulting was measured intra-operatively using microscope-integrated OCT. The ICL-lenticular relationship was dynamically assessed throughout the surgery. Postoperative vaulting was measured using anterior segment optical coherence tomography on the same day (6 hours), day 1, day 2, day 3 or 4, 1week, 2week and 4week. Uncorrected and best-corrected Snellen visual acuity, intraocular pressure (IOP), and anterior and posterior segments were assessed in all cases.

Results:

Mean central vaulting noted intra-operatively was 584.5±210.5µm. Postoperative mean vaulting was 595.8±212.6µm at 6 hours, 612.8±218.2µm on day1, 578.6±204.8µm on 1 week and 574.1±204.3µm on 4week. Mi-OCT over predicted in 80% of the patients (from +2 to +66 microns) and under predicted in 20% (-2 to -16 microns). Mean overprediction was 3.39±4.2% and under prediction was 2.43±1.62% with overall intraoperative OCT was over predicting by 1.93% to final vaulting at 4 weeks. Post-operative vaulting could be predicted using formula 8.84+(0.96*intraoperative vaulting) with a mean error of 12.99±11.91microns.

Conclusions:

Intraoperative OCT is a good tool in predicting the final post-operative vaulting.

Financial Disclosure:

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