Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2022 Jun 18;15(6):924-931.
doi: 10.18240/ijo.2022.06.09. eCollection 2022.

The binocular intraocular lens power difference in eyes with different axial lengths

Ming-Hui Deng  1   2   3 , Xiao-Gang Wang  4 , Song Chen  1   2 , Xue-Feng Shi  1   2
Affiliations

The binocular intraocular lens power difference in eyes with different axial lengths

Ming-Hui Deng et al. Int J Ophthalmol. .

Abstract

Aim: To investigate the binocular intraocular lens (IOL) power difference in eyes with short, normal, and long axial lengths (AL) using Lenstar LS 900 optical biometry.

Methods: A total of 716 (1432 eyes) participants were included. The groups were categorized into short (group A: AL<22 mm), normal (group B: 22 mm≤AL≤25 mm), and long AL groups (group C: AL>25 mm). The central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), AL, anterior corneal keratometry, white-to-white (WTW), pupil diameter (PD), as well as IOL power calculated using embedded Barrett formula were assessed. Bland-Altman plots were used to test the agreement of the binocular parameters.

Results: In group A, the CCT of the right eye was significantly thinner than that of the left eye (P=0.044) with a difference of -2±8 µm [95% limits of agreement (LoA), -17.8 to 13.2 µm]. For group B, the PD and IOL power in the right eye were significantly lower than those of the left eye (P=0.001, <0.001) with a difference of -0.05±0.32 mm (95%LoA, -0.68 to 0.58 mm) and -0.18±1.01 D (95%LoA, -2.2 to 1.8 D). The AL of right eye was longer than that of the left eye (P=0.002) with a difference of 0.04±0.25 mm (95%LoA, -0.45 to 0.52 mm). No significant difference was observed for all the binocular parameters in group C. The percentage of participants with binocular IOL power difference within ±0.5 D were 62% (31/50), 68.3% (339/496), and 38.8% (66/170) in groups A, B, and C, respectively.

Conclusion: The binocular parameters related to IOL power are in good agreement, but the binocular IOL power difference of more than half of participants with long AL is more than 0.50 D.

Keywords: axial length; binocular difference; intraocular lens power.

PubMed Disclaimer

Figures

Figure 1
Figure 1. The Bland-Altman plots of the CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power between the right and left eyes in group A
The mean difference is demonstrated by the continuous line, whereas the 95% limits of agreement are indicated by the dashed lines. CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 2
Figure 2. Scatterplots demonstrate the correlation between CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power for the binocular parameters in group A
The regression equation is demonstrated in the rectangular box (x represents right eye; y represents left eye). CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 3
Figure 3. The Bland-Altman plots of CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power between right and left eyes in group B
The mean difference is demonstrated by the continuous line, whereas the 95% limits of agreement are indicated by the dashed lines. CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 4
Figure 4. Scatterplots demonstrate the correlation between the CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power for the binocular parameters in group B
The regression equation is demonstrated in the rectangular box (x represents right eye; y represents left eye). CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 5
Figure 5. Scatterplots demonstrate the correlation between the CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power for the binocular parameters in group C
The regression equation is demonstrated in the rectangular box (x represents right eye; y represents left eye). CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 6
Figure 6. The Bland-Altman plots of CCT, ACD, LT, AL, Kflat, Ksteep, WTW, PD, and IOL power between right and left eyes in group C
The mean difference is demonstrated by the continuous line, whereas the 95% limits of agreement are indicated by the dashed lines. CCT: Central corneal thickness; ACD: Anterior chamber depth; LT: Lens thickness; AL: Axial length; Kflat: Flat keratometry; Ksteep: Steep keratometry; WTW: White-to-white distance; PD: Pupil diameter; IOL: Intraocular lens.
Figure 7
Figure 7. Number of participants of binocular intraocular lens power difference range (absolute value from 0 to 10 D) in groups A, B, and C
IOL: Intraocular lens; OD: Right eye; OS: Left eye.
See this image and copyright information in PMC

Similar articles

See all similar articles

References

    1. de Bernardo M, Zeppa L, Forte R, Cennamo M, Caliendo L, Zeppa L, Rosa N. Can we use the fellow eye biometric data to predict IOL power? Semin Ophthalmol. 2017;32(3):363–370. - PubMed
    1. Jivrajka RV, Shammas MC, Shammas HJ. Improving the second-eye refractive error in patients undergoing bilateral sequential cataract surgery. Ophthalmology. 2012;119(6):1097–1101. - PubMed
    1. Olsen T. Use of fellow eye data in the calculation of intraocular lens power for the second eye. Ophthalmology. 2011;118(9):1710–1715. - PubMed
    1. Olsen T, Løgstrup N, Olesen H, Corydon L. Using the surgical result in the first eye to calculate intraocular lens power for the second eye. J Cataract Refract Surg. 1993;19(1):36–39. - PubMed
    1. Covert DJ, Henry CR, Koenig SB. Intraocular lens power selection in the second eye of patients undergoing bilateral, sequential cataract extraction. Ophthalmology. 2010;117(1):49–54. - PubMed

LinkOut - more resources