Figures & data
Table 1 Demographics of study population
Figure 1 Distribution of magnitude of PCA, ACA and TCA at 3-mm corneal diameter in cataract patients.
Abbreviations: D, diopters; PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism.
![Figure 1 Distribution of magnitude of PCA, ACA and TCA at 3-mm corneal diameter in cataract patients.Abbreviations: D, diopters; PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism.](/cms/asset/671cbe35-fc49-44d2-8e2d-92efc2d6c78c/doph_a_12176451_f0001_b.jpg)
Figure 2 Distribution of axial of PCA at 3-mm corneal diameter.
Abbreviations: PCA, posterior corneal astigmatism; WTR, with-the-rule; ATR, against-the-rule.
![Figure 2 Distribution of axial of PCA at 3-mm corneal diameter.Abbreviations: PCA, posterior corneal astigmatism; WTR, with-the-rule; ATR, against-the-rule.](/cms/asset/0d2c46b3-47a8-4752-ad6f-9b34702e685a/doph_a_12176451_f0002_b.jpg)
Figure 3 The overall distribution of anterior, posterior, and TCA at 3-mm corneal diameter in cataract patients.
Abbreviations: PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism; WTR, with-the=rule; ATR, against-the-rule.
![Figure 3 The overall distribution of anterior, posterior, and TCA at 3-mm corneal diameter in cataract patients.Abbreviations: PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism; WTR, with-the=rule; ATR, against-the-rule.](/cms/asset/04fa9166-9ae2-4ab4-beb8-0da87ce6d046/doph_a_12176451_f0003_b.jpg)
Figure 4 Positive linear correlations between the magnitude of ACA, TCA, KA and PCA.
Abbreviations: PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism; KA, simulated corneal astigmatism; APV, astigmatic power vector.
![Figure 4 Positive linear correlations between the magnitude of ACA, TCA, KA and PCA.Abbreviations: PCA, posterior corneal astigmatism; ACA, anterior corneal astigmatism; TCA, total corneal astigmatism; KA, simulated corneal astigmatism; APV, astigmatic power vector.](/cms/asset/6d7ddb02-186f-485d-b1a8-aae1969b5a2c/doph_a_12176451_f0004_b.jpg)
Figure 5 Positive linear correlations between the corneal aberration and PCA.
Abbreviations: Z4° cornea, primary spherical aberration of the total cornea; Z4° CF, primary spherical aberration of the corneal front surface; Total cornea RMS, total corneal aberrations; Total LOA RMS, total corneal lower-order aberrations; Total HOA RMS, total corneal higher-order aberrations; RMS, root mean square; APV, astigmatic power vector.
![Figure 5 Positive linear correlations between the corneal aberration and PCA.Abbreviations: Z4° cornea, primary spherical aberration of the total cornea; Z4° CF, primary spherical aberration of the corneal front surface; Total cornea RMS, total corneal aberrations; Total LOA RMS, total corneal lower-order aberrations; Total HOA RMS, total corneal higher-order aberrations; RMS, root mean square; APV, astigmatic power vector.](/cms/asset/3136ff15-3ffa-439b-b653-fd2f5153bd51/doph_a_12176451_f0005_b.jpg)
Figure 6 Positive linear correlations between the Q value (anterior) and PCA.
Abbreviations: PCA, posterior corneal astigmatism; APV, astigmatic power vector.
![Figure 6 Positive linear correlations between the Q value (anterior) and PCA.Abbreviations: PCA, posterior corneal astigmatism; APV, astigmatic power vector.](/cms/asset/09d44837-fb51-4a77-a617-9f68bdd259bd/doph_a_12176451_f0006_b.jpg)
Figure 7 Correlations between the Q value (posterior) and PCA.
Abbreviations: PCA, posterior corneal astigmatism; APV, astigmatic power vector.
![Figure 7 Correlations between the Q value (posterior) and PCA.Abbreviations: PCA, posterior corneal astigmatism; APV, astigmatic power vector.](/cms/asset/7ae9803b-71e4-4f6d-8d55-65149f99b659/doph_a_12176451_f0007_b.jpg)
Figure 8 Correlations between Age, AL, ACD, CCT, WTW, ATA and PCA.
Abbreviations: PCA, posterior corneal astigmatism; AL, axial length; ACD, anterior chamber depth; CCT, central corneal thickness; WTW, horizontal corneal diameter; ATA, angle to angle distance; APV, astigmatic power vector.
![Figure 8 Correlations between Age, AL, ACD, CCT, WTW, ATA and PCA.Abbreviations: PCA, posterior corneal astigmatism; AL, axial length; ACD, anterior chamber depth; CCT, central corneal thickness; WTW, horizontal corneal diameter; ATA, angle to angle distance; APV, astigmatic power vector.](/cms/asset/277b4a90-636a-43d8-a9a4-b327afc7fa85/doph_a_12176451_f0008_b.jpg)
Table S1 Correlations between PCA and influencing factors