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Original Research

Transitional conic toric intraocular lens for the management of corneal astigmatism in cataract surgery

, , , , , & show all
Pages 1071-1079 | Published online: 08 Jun 2018

Figures & data

Figure 1 Cylinder vector analysis.

Notes: (A) TIA vector. (B) EV. (C) NEV. (D) TEV.
Abbreviations: TIA, target-induced astigmatism; EV, error vector; NEV, normalized error vector; TEV, treatment error vector; D, diopters; SIA, surgically induced astigmatism.
Figure 1 Cylinder vector analysis.

Table 1 Demographic data

Figure 2 Three months postoperative cumulative UNVA/UDVA and CDVA.

Notes: (A) Preoperative CDVA and postoperative UDVA and CDVA for group 1 (emmetropia). (B) Preoperative CDVA and postoperative UNVA and CDVA for group 2 (mild myopia for monovision). (C) Difference between UDVA and CDVA for group 1 (emmetropia). (D) Change in CDVA for all 97 eyes.
Abbreviations: UNVA, uncorrected near visual acuity; UDVA, uncorrected distance visual acuity; CDVA, corrected distance visual acuity.
Figure 2 Three months postoperative cumulative UNVA/UDVA and CDVA.

Figure 3 Accuracy of refractive correction.

Notes: (A) Attempted versus achieved SEQ: group 1. (B) Attempted versus achieved SEQ refraction: group 2. (C) SEQ accuracy (all patients). (D) Pre- versus postoperative astigmatism. (E) TIA versus SIA. (F) Refractive astigmatism AE. The blue lines show attempted correction = achieved correction; the green lines show +0.5 and −0.5 from attempted correction; the pink lines show +1 and −1 from attempted correction; the black lines correspond to the linear regression analysis; the linear regression equations are on the gray boxes in the graphs.
Abbreviations: SEQ, spherical equivalent; TIA, target-induced astigmatism; SIA, surgically induced astigmatism; AE, angle of error; D, diopters.
Figure 3 Accuracy of refractive correction.

Figure 4 Refractive stability of SEQ.

Notes: (A) Refractive stability of SEQ for emmetropia target (group 1). (B) Refractive stability of SEQ for mild myopia target (group 2).
Abbreviations: SEQ, spherical equivalent; SD, standard deviation; D, diopters.
Figure 4 Refractive stability of SEQ.

Table 2 Pre- versus 3-month postoperative data for group 1

Table 3 Pre- versus 3-month postoperative data for group 2

Table 4 Cylinder vector analysis