Abstract
To identify a method for comparing preoperative axial length (AL) measurements with postoperative AL in submacular hemorrhage (SMH). Retrospective. This study included 30 patients who underwent vitrectomy for SMH (January 2016-January 2023) with preoperative and postoperative AL data. Preoperative AL was obtained using ultrasonography for the affected eye (aUS-AL) and compared to those measured using optical biometry (OB) for the affected and fellow eyes (aOB-AL and fOB-AL, respectively). Postoperative AL (aPost-AL) was defined as the AL of the affected eye by OB. The absolute differences between the preoperative AL (aUS-AL, aOB-AL, and fOB-AL) and aPost-AL were assessed. aUS-AL, aOB-AL, and fOB-AL values were 23.50 ± 1.41mm, 23.32 ± 1.40mm, and 23.66 ± 1.45mm, respectively, correlating strongly with aPost-AL (23.54 ± 1.37mm) (all R > 0.95). fOB-AL exceeded aPost-AL significantly (P = 0.02). In all 30 eyes, absolute differences between preoperative AL and aPost-AL were 0.19 ± 0.18mm, 0.28 ± 0.32mm, and 0.21 ± 0.22mm, respectively, which were not significantly different from each other (all P > 0.05). In nine eyes with SMH height > 1000μm or unmeasurable, the absolute difference between aOB-AL and aPost-AL (0.42 ± 0.33mm) exceeded that of aUS-AL and aPost-AL (0.10 ± 0.09mm) (P = 0.003). Although aUS-AL, aOB-AL, and fOB-AL correlated well with postoperative AL in patients with SMH, fOB-AL may be measured longer and aOB-AL shorter in some cases. Therefore, aUS-AL may be considered primarily in determining IOL power of cataract surgery performed in combination with SMH displacement.
Published Version
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