Capsular Tension Rings Reduce IOL Decentration in Highly Myopic Eyes Over 30 mm, claims JAMA study
Researchers have demonstrated that capsular tension rings (CTRs) can indeed significantly reduce intraocular lens (IOL) decentration and tilt in highly myopic eyes, inclusive of cases in which the axial length (AL) is equal to or greater than 30 mm. A recent study published in JAMA Ophthalmology was conducted by Lin and colleagues.
In this clinical trial, there were 186 patients with cataracts whose AL was 26 mm or more. All the patients were further divided into three strata according to AL: stratum 1 (26 mm≤AL<28 mm), stratum 2 (28 mm≤AL<30 mm), and stratum 3 (AL≥30 mm). Randomization was carried out by assigning half of the patients in each stratum to the CTR group with a combination of a C-loop IOL with a CTR and the remaining half to the control group with only a C-loop IOL. The principal outcome measure was IOL decentration, which was assessed at 3 months post-surgery by anterior segment optical coherence tomography.
Results
• Of the 186 eyes that were included in this study 93 eyes (50%) belonged to the CTR group, and 93 eyes (50%) belonged to the control group. 87 eyes in the CTR group and 92 eyes in the control group were seen for follow-up at a minimum of 3 months after cataract surgery.
• The authors reported that, compared with the CTR group at 3 months post cataract surgery, IOL decentration and tilt were smaller in the control group (difference, −0.04 mm; 95% CI, −0.07 to −0.01 mm; p =0 .02).
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