Toric intraocular lenses for correction of astigmatism in keratoconus and after corneal surgery

Figures & data

Table 1 Baseline parameters

Patients (n)	6	7	3
Eyes (n)	6	8	3
Age (years)	59±9	54±8	74±6
Refractive sphere (D)	−7.4±3.0	−6.0±4.7	−0.5±0.7
Refractive cylinder (D)	4.0±1.8	5.5±3.4	4.7±1.6
Refractive SE (D)	−5.4±2.4	−3.3±3.9	1.8±0.3
Corneal astigmatism (D)*	6.1±5.9	7.3±4.3	3.9±0.4
IOL sphere (D)	6.7±8.3	10.2±10.3	21.3±1.0
IOL cylinder (D)	5.8±3.0	7.3±4.3	4.4±0.6
IOL SE (D)	9.6±6.9	13.8±9.1	23.5±1.2
AT TORBI 709, Carl Zeiss (n)	1	4	0
Tecnis Toric ZCT IOL Abbott (n)	2	2	2
Acrysof SN6AT Alcon (n)	3	2	1

Notes: Data are expressed as mean ± SD.

* Pentacam-derived (SimK).

Abbreviations: IOL, intraocular lens; SD, standard deviation; SE, spherical equivalent.

Figure 1 Preoperative versus 12-month postoperative BCVA.

Abbreviation: BCVA, best-corrected visual acuity.

Figure 2 Changes in BCVA (Snellen chart) after 12 months of toric intraocular lens implantation.

Note: *Comorbidity: macular pucker with metamorphopsia (postoperative BCVA 0.6).
Abbreviation: BCVA, best-corrected visual acuity.

Figure 3 Preoperative corneal astigmatism versus 12-month postoperative refractive cylinder distribution in diopters (D).

Figure 4 Scatter plot of the astigmatic vectors (J₀ and J₄₅) before and after toric intraocular lens implantation.