Comparison of Optical Quality and Intraocular Scattering After Hole-Collagen Copolymer IOL and Conventional Collagen Copolymer IOL Implantation Using Double-Pass Instrument

Shimizu, Kimiya

Comparison of Optical Quality and Intraocular Scattering After Hole-Collagen Copolymer IOL and Conventional Collagen Copolymer IOL Implantation Using Double-Pass Instrument

Tuesday, April 29, 2014: 10:51 AM

Room 152 (Boston Convention and Exhibition Center)

Kimiya Shimizu, MD, PhD, Kitasato Univ School of Medicine, Kanagawa, Japan

Kazutaka Kamiya, MD, PhD, Kitasato Univ, Sch of Medicine, Kanagawa, Japan

Akihito Igarashi, MD, Kitasato Unversity, Kanagawa, Japan

Narrative Responses:

Purpose
To objectively compare the optical quality and the intraocular scattering after implantation of the posterior chamber phakic implantable collamer lens (Visian ICL^TM, STAAR Surgical) with and without a central artificial hole for moderate to high ametropia.

Methods
This retrospective study comprised 28 eyes of 28 consecutive patients undergoing Hole ICL (KS-AP^TM) implantation (mean age ± standard deviation, 30.3 ± 5.8 years), and 24 age-matched eyes of 24 patients undergoing conventional ICL implantation (age, 30.4 ± 6.1 years). We quantitatively assessed the postoperative values of MTF cutoff frequency, Strehl ratio, objective scattering index (OSI), and OQAS values (OVs), using an Optical Quality Analysis System^TM. We compared these postoperative variables between the two groups.

Results
The mean MTF cutoff frequency, Strehl ratio, OSI, OV100%, OV 20%, and OV9%, were 26.21 ± 8.32 cycles/degree, 0.16 ± 0.04, 1.16 ± 0.57, 0.87 ± 0.28, 0.80 ± 0.35, and 0.80 ± 0.33, respectively, 3 months after Hole ICL implantation. We found no significant differences in the MTF cutoff frequency (Mann Whitney U test, p=0.59), the Strehl ratio (p=0.82), the OSI (p=0.63), or the OVs at contrasts of 100% (p=0.58), 20% (p=0.40), and 9% (p=0.87), between the two groups.

Conclusion
Newly developed Hole ICL implantation appears to be essentially equivalent in the optical quality variables to conventional ICL implantation, suggesting that the presence of the central artificial hole does not significantly affect the optical quality and the intraocular scattering after surgery.