Study finds, Clinical differences between toric intraocular
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Toric IOL implantation resulted in excellent improvement in both close and distant UCVA in patients with corneal astigmatism. The aim of this study was to analyze and compare the clinical results of toric intraocular lens (IOL) and monofocal IOL implantation when the target refraction value is -3 diopter (D) in cataract patients with corneal astigmatism more than 1.5 diopters (D).

Patients with corneal astigmatism greater than 1.5D who underwent cataract surgery and had a target refraction of -3D were studied retrospectively. The latest research included 100 eyes (100 patients; monofocal IOL, 60; toric IOL, 40). Before and after surgery, the patients' uncorrected visual acuity (UCVA), corrected VA, spherical equivalent, and refractive, corneal astigmatism were measured.

Results:
--The near UCVA of the toric IOL group (0.26±0.33) after cataract surgery was significantly better than that of the monofocal IOL group (0.48±0.32).

--The distant UCVA of the toric IOL group (0.38±0.14) was also significantly better than that of the monofocal IOL group (0.55±0.22).

--Best-corrected visual acuity and mean spherical equivalent did not show significant differences between the toric IOL group and the monofocal IOL group.

--In the toric IOL group, postoperative refractive astigmatism was -0.80±0.46D and postoperative corneal astigmatism was -1.50±0.62D, whereas the corresponding values in the monofocal IOL group were -1.65±0.77D and -1.45±0.64D; residual refractive astigmatism was significantly lower with toric IOL implantation compared with monofocal IOL implantation. There were no postoperative complications.

Finally, toric IOL implantation resulted in excellent improvement in both close and distant UCVA when myopic refraction such as -3D was determined as the target power in patients with corneal astigmatism.

Source: https://bmcophthalmol.biomedcentral.com/articles/10.1186/s12886-021-01966-8
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