June 2023
Volume 64, Issue 8
Open Access
ARVO Annual Meeting Abstract  |   June 2023
Intraocular lens power calculation in eyes with shallow anterior chamber depth and normal axial length
Author Affiliations & Notes
  • Young In Yun
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Yunjin Lee
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Mee Kum Kim
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Joo Youn Oh
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Hyuk Jin Choi
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Chang Ho Yoon
    Ophthalmology, Seoul National University Hospital, Seoul, Korea (the Republic of)
    Ophthalmology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
  • Footnotes
    Commercial Relationships   Young In Yun None; Yunjin Lee None; Mee Kum Kim None; Joo Youn Oh None; Hyuk Jin Choi None; Chang Ho Yoon None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science June 2023, Vol.64, 2516. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Young In Yun, Yunjin Lee, Mee Kum Kim, Joo Youn Oh, Hyuk Jin Choi, Chang Ho Yoon; Intraocular lens power calculation in eyes with shallow anterior chamber depth and normal axial length. Invest. Ophthalmol. Vis. Sci. 2023;64(8):2516.

      Download citation file:


      © ARVO (1962-2015); The Authors (2016-present)

      ×
  • Supplements
Abstract

Purpose : To compare the accuracy of three intraocular lens (IOL) calculation formulas in eyes with shallow anterior chamber depth (ACD) and normal axial length (AXL).

Methods : We retrospectively reviewed eyes with shallow ACD (< 2.5 mm, from corneal epithelium to the lens) with normal AXL (22.5–24.0 mm) and control eyes (ACD 3.0–3.5 mm and normal AXL). The refractive prediction error (PE) and median absolute error (MedAE) were evaluated using the SRK/T, Barrett Universal II (BUII), and Kane formulas. The percentage of eyes with PE within 0.25 to 1.00 D and the correlations among ACD, lens thickness (LT), and PE were analyzed.

Results : In total, 35 shallow ACD eyes and 63 control eyes were included. Compared to the control group, in the shallow ACD group, the PE showed significantly more hyperopic results in the BUII and Kane formulas (all p < 0.05) than in the SRK/T formula. Further, in the shallow ACD group, the MedAE was significantly higher in the BUII formula than in the SRK/T formula (p < 0.05). Meanwhile, the percentages of PE within 0.25 D were higher in the SRK/T formula (p = 0.009), but those within 0.50 D were similar in all formulas. PE was negatively correlated with ACD in the BUII and Kane formulas and positively correlated with LT in all formulas.

Conclusions : For eyes with shallow ACD and normal AXL, the SRK/T formula might achieve the most accurate prediction for IOL, although the BUII and Kane formulas also provide comparable outcomes.

This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.

 

Figure 1. Box plot presentation of the refractive prediction error (A) and mean absolute error (B) of the three intraocular lens calculation formulas.
(A) In the shallow ACD group, the RPE shows a more hyperopic shift in the BUII formula than in the SRK/T and Kane formulas.
(B) In the shallow ACD group, the MAE is significantly higher in the BUII formula than in the SRK/T formula.
*p < 0.05, **p < 0.01 by independent t-test
†p < 0.05, †††p < 0.001, ††††p < 0.0001 by repeated measures one-way analysis of variance with Tukey’s post hoc test

Figure 1. Box plot presentation of the refractive prediction error (A) and mean absolute error (B) of the three intraocular lens calculation formulas.
(A) In the shallow ACD group, the RPE shows a more hyperopic shift in the BUII formula than in the SRK/T and Kane formulas.
(B) In the shallow ACD group, the MAE is significantly higher in the BUII formula than in the SRK/T formula.
*p < 0.05, **p < 0.01 by independent t-test
†p < 0.05, †††p < 0.001, ††††p < 0.0001 by repeated measures one-way analysis of variance with Tukey’s post hoc test

 

Figure 2. Percentage of eyes with prediction errors within ± 0.25 D, ± 0.50 D, ± 0.75 D, and ± 1.00 D in the (A) control group and (B) shallow anterior chamber depth group.
In the shallow ACD group, the percentage of PE within 0.25 D was higher in the SRK/T formula than in the Barrett II and Kane formulas (Cochrane Q test, p = 0.009).
* p < 0.01

Figure 2. Percentage of eyes with prediction errors within ± 0.25 D, ± 0.50 D, ± 0.75 D, and ± 1.00 D in the (A) control group and (B) shallow anterior chamber depth group.
In the shallow ACD group, the percentage of PE within 0.25 D was higher in the SRK/T formula than in the Barrett II and Kane formulas (Cochrane Q test, p = 0.009).
* p < 0.01

×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×