SS-OCT–based ocular biometry in an adult Korean population with cataract

Abstract

Design: Retrospective case series. Methods: Ocular biometric values of 5273 eyes of 5273 Korean patients undergoing cataract surgery measured with the IOLMaster 700 at the Seoul National University Hospital between November 2019 and December 2021 were reviewed.Results: A total of 5273 eyes of 5273 Korean patients were analyzed. The mean ± SD age was 66.1 ± 12.8 years, and 62% were female. Overall, age and ocular biometric parameters were correlated with each other. Particularly, age showed a negative correlation with anterior chamber depth (ACD; r = À0.357), axial length (AL; r = À0.344), and posterior keratometry (PK; r = À0.054) and a positive correlation with lens thickness (LT; r = 0.484), angle a (r = 0.194), total keratometry (TK; r = 0.137), anterior keratometry (AK; r = 0.129), and angle k (r = 0.071). AL showed a positive correlation with ACD (r = 0.503) and PK (r = 0.339) and a negative correlation with AK (r = À0.342), TK (r = À0.334), LT (r = À0.288), angle a (r = À0.220), and angle k (r = À0.040). With age, anterior and total corneal astigmatism changed from with-the-rule (WTR) to againstthe-rule (ATR) astigmatism. Posterior corneal astigmatism was ATR regardless of age; however, the magnitude decreased with age.Conclusions: Age showed a significant correlation in the order of LT, ACD, and AL. With age, angle a and k increased, and total corneal astigmatism changes from WTR to ATR, which is mainly affected by changes in anterior corneal astigmatism. AL showed a significant correlation in the order of ACD, AK, PK, and TK. These data are pertinent for improving the result after cataract surgery, especially when using premium intraocular lenses.

Ocular biometric characteristics of Han ethnicity in Tianjin and Uyghur ethnicity in Xinjiang undergoing cataract surgery

“…Han patients had deeper ACD than Uyghur patients, and male patients in all ethnic groups had deeper ACD than female patients. The results were consistent with the sex differences between the correlation of ACD and AL in patients with cataracts in South Korea and Israel [12,34] . It is suggested that female patients with a shallow ACD may be more likely to develop acute primary angle-closure glaucoma than male patients based on cataract impacts.…”

“…Therefore, identifying these differences in ocular biometric parameters is useful for assessing the status of associated ocular diseases and guiding surgical and postoperative care. Relevant studies have been conducted in countries such as the United States, Spain, South Korea, and Bosnia and Herzegovina [9][10][11][12][13] ; however, most of them are limited to a single ethnic group in a single region. Owing to the differences in measuring instruments and patient inclusion criteria, it is difficult to compare ocular biometric parameters between ethnic groups.…”

Correlation of Ocular Biometry with Axial Length in Elderly Japanese

“…Previous studies with correlation analyses showed significant positive correlations between AL and WTW, [13][14][15]17,18,22,25,[28][29][30] and between AL and ACD. [13][14][15]17,18,[21][22][23][24][25][26][27][28][29][30][31]33,36,37 However, Wei et al 38 reported that there is no linear increasing relationship between AL and WTW, with WTW reaching its maximum at ALs of 24.5 to 26 mm and gradually decreasing. Therefore, the present result on the association between AL and WTW may not necessarily apply in all cases.…”

“…The relationship between AL and LT was discussed in Jivrajka et al 33 (R 2 = 0.0321), which made a similar report. Previous studies with correlation analyses pointed out several significant negative correlations between the two, 13,14,16,17,22,27,32,33,36,37 suggesting that LT becomes thinner as AL increases. However, Meng et al 39 linear decreasing relationship between AL and LT.…”

“…Recent studies with correlation analyses reported significant but low correlations between AL and CCT. [13][14][15]19,20,27,30,31,34,35 Therefore, it is believed that AL does not vary with changes in CCT. There have been some reports on correlation analysis of significant negative relationship between AL and corneal power.…”