Visual and Refractive Outcomes of Trifocal IOLs
Purpose
To investigate visual and refractive parameters after bilateral implantation of trifocal intraocular lenses.
Methods
Observational prospective study was done. Thirty patients who underwent uneventful phacoemulsification with trifocal lens implantation formed study population. All patients had corneal astigmatism <1.0D, normal retina and IOL power between +10.0D and +30.0D. Post op vision and refraction was done at 1 month. Vision for distance was measured with Snellen's chart, intermediate with Sloan's chart and near with Snellen's chart. Spherical equivalent was also measured at 1 month.
Results
At one month postop 24 eyes (80%) had visual acuity of 6/6, rest 6 eyes (20%) had 6/6 part vision, intermediate vision in 22 eyes (73.3%) was 20/20 and rest 8 eyes (26.6%) was 20/25, near vision in 22 eyes (73.3%) was N5 and in 8 eyes (26.6%) was N6. Spherical equivalent (SE) in 9 eyes (30%) was 0, 18 eyes (60%) had SE +0.5D or less and 3 eyes (10%) ha SE less than -0.75D or less.
Conclusion
In this study subjects with trifocal lenses reported good distance, near and intermediate visual acuity. Also post operative spherical equivalent was more hyperopic than zero or myopic, but was negligible.