Effects of Reduction in Intraocular Pressure Following Trabeculotomy on Axial Length and Intraocular Lens Selection

Satoru Kanda; Takashi Fujishiro; Ayako Karakawa; Suguru Nakagawa; Kiyoshi Ishii

doi:10.1097/j.jcrs.0000000000001447

Effects of Reduction in Intraocular Pressure Following Trabeculotomy on Axial Length and Intraocular Lens Selection

J Cataract Refract Surg. 2024 Mar 27. doi: 10.1097/j.jcrs.0000000000001447. Online ahead of print.

Authors

Satoru Kanda^{1

2}, Takashi Fujishiro², Ayako Karakawa^{1

2}, Suguru Nakagawa^{1

2}, Kiyoshi Ishii^{1

2}

Affiliations

¹ Saitama Red Cross Hospital, 1-5 Shintoshin, Cyuo-ku, Saitama-shi Saitama.
² Department of Ophthalmology, University of Tokyo Graduate School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo.

PMID: 38532268
DOI: 10.1097/j.jcrs.0000000000001447

Abstract

Purpose: To investigate the relationship between intraocular pressure (IOP) and axial length (AL) and to compare the refractive predicted error in patients who have undergone cataract surgery alone or in combination with trabeculotomy.

Setting: Hospital.

Design: Single-center, retrospective, case-control.

Methods: The medical records of patients who had undergone cataract surgery alone or in combination with trabeculotomy using the Tanito microhook were retrospectively reviewed. Patients were grouped into cataract surgery alone (CAT) or cataract surgery combined with trabeculotomy (LOT) groups. Demographic data, preoperative and postoperative IOP and AL, and surgically induced astigmatism (SIA) were analyzed before and 1 month after surgery to evaluate the interplay between IOP, AL, and refractive outcomesv.

Results: Fifty-two eyes (52 patients) underwent LOT, and 67 eyes (67 patients) underwent CAT. The mean IOP at baseline did not differ between the groups; the change in IOP (dIOP) was significantly higher in the LOT group than in the CAT group. The mean AL at baseline and the change in AL (dAL) were 24.0±1.2 mm and 0.16±0.11 mm, respectively, in the LOT group, and 23.8±1.1 mm and 0.11±0.070 mm, respectively, in the CAT group. The difference in dAL was also significant. In the LOT group, dIOP and dAL were significantly correlated. The mean SIA vectors did not significantly differ between the groups.

Conclusions: AL decreased owing to the reduction in IOP after cataract surgery combined with trabeculotomy. Consequently, the refractive target error was greater, and the postoperative refractive outcome showed a tendency towards hyperopia.