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       XXVI Annual Congress of the Iranian Society of Ophthalmology        بـیــست و ششمین کنــگــره سـالیـانه انـجـمـن چـشـم پـزشـکی ایـــران
مقاله Abstract


Title: Comparative analysis of the visual performance after implantation of the Toric Implantable Collamer Lens (TICL) in stable keratoconus: 4-year follow-up
Author(s): Farideh Doroodgar, Azad Sanginabadi,Feiz Niazi ,Cyrus AliNia ,Eznollah Azargashb, Alireza BaradaranRafie
Presentation Type: Oral
Subject: Cornea and Anterior Segment
Others:
Presenting Author:
Name: Farideh Doroodgar
Affiliation :(optional) Negah eye hospital
E mail: farinaz_144@yahoo.com
Phone: 09125259912
Mobile: 09125259912
Purpose:

To report on 4-year postoperative satisfaction with the Toric Implantable Collamer Lens (TICL) for stable keratoconus by evaluating vision, refraction, contrast sensitivity, aberrometry, and defocus curve and comparing them with similar postoperative outcomes.

Methods:

Forty eyes of 24 patients with stable keratoconus with myopia between 0.00 and -18.00 diopters (D) and astigmatism between 1.25 and 8.00 D were evaluated in this prospective interventional before and after study (https://clinicaltrials.gov/ct2/show/NCT02833649). We evaluated refraction, uncorrected distance visual acuity (UCDVA), best corrected distance visual acuity (BCDVA), contrast sensitivity, aberrometry, defocus curve, subjective satisfaction, and operative and postoperative complications

Results:

At 4-year follow-up, 45% had 20/20 vision or better, and 100% had 20/40 or better uncorrected visual acuity (UCVA), if the best corrected visual acuity (BCVA) was 20/20 and patients were targeted for emmetropia; in addition, 82.5% of patients were within ±0.5 D and 97.05% were within ±1.0 D of the anticipated refraction. The mean change in BCVA extended between the 0.6 and 0.8 lines. At 4 years postoperatively, none of the eyes showed a decreased in UCVA, in contrast to 24 eyes in which UCVA was increased by?1 lines, with contrast sensitivity and improvement in total aberrations after TICL implantation. The cumulative 4-year corneal endothelial cell loss was ?5%. No patients reported dissatisfaction, and 100% of patients reported they would choose implantable collamer lens (ICL) implantation again. At 4 -years follow-up, the mean spherical and cylindrical manifest refractions were 0.44±0.18 D and -1.01 ± 0.44 D, respectively. At the end of follow-up, the vault was 658±54.33µm (range, 500-711) and the intraocular pressure (IOP) was 11.7±2.08 mmHg. Occurrences of glare and night-driving troubles diminished after TICL surgery and in the subsequent period.

Conclusion:

The results from this standardized clinical investigation support TICL implantation from clinical and optical viewpoints in patients with stable keratoconus.

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