Clinical outcomes following trifocal diffractive intraocular lens implantation for age-related cataract in China

Abstract

PurposeThe aim of this study was to evaluate visual, refractive and patient satisfaction outcomes following implantation of a trifocal diffractive intraocular lens (IOL).Patients and methodsThis prospective, consecutive study included patients undergoing lens phacoemulsification of cataract and implantation of a trifocal diffractive IOL (AT LISA tri 839MP). Visual outcomes, including near, intermediate and distance visual acuity (VA), refractive error, contrast sensitivity, defocus curve and patient satisfaction were assessed preoperatively and postoperatively.ResultsThirty IOLs were implanted in 26 patients. Distance VA improved significantly from 0.70±0.45 to 0.08±0.11 logMAR (p<0.0001) 1 week postoperatively, and to 0.07±0.13 logMAR (p<0.0001) at 1 month and 0.05±0.10 logMAR (p<0.0001) at 3 months. Uncorrected near and intermediate VA, as well as corrected near, intermediate and distance VA, were stable and maintained during the follow-up period. Preoperative anterior chamber depth demonstrated an association with effective adjustment of postoperative spherical equivalent using a regression formula (p=0.007). No significant differences were observed for VA at defocus curves of 0 to −3 D. Contrast sensitivity at each spatial frequency improved significantly at 1 week, 1 month and 3 months under photopic and photopic with glare conditions. Under mesopic and mesopic with glare conditions, significant differences were observed postoperatively at low and medium spatial frequencies. Patients reported a high level of satisfaction and an absence of glare or halo 3 months postoperatively.ConclusionIn this study, the trifocal diffractive IOL provided excellent visual performance at all distances and improved contrast sensitivity under different conditions, resulting in high levels of patient satisfaction and spectacle independence in Chinese patients.

<p>Subjective Perception Of Trifocal IOL Performance, Including Toric Models</p>

“…Comparison with previous studies concerned with the same trifocal IOL would not be effectively achieved 11,16,18,20,21,26. The same was concluded when revised other works not dealing with the current IOL 11,13,14,29–31. There are no standards in methodology-assessing subjective perception for vision after multifocal IOL implantation, not to mention results retrieved from this assessment.…”

“…Questions vary in number and contents. Most of the studies simply represented the answers in term of percentage of 3–4 levels of satisfaction 10–14,16,29–31. Those which chose to use scoring, used it in a descending manner (0 being the best),18,20,21,26 or ascending (0 being the worst).11 The final score also varied from 4,20 618,21,26 and 10.11…”

“…Extensive concerns were addressed to assess advanced visual and optical functions, naming near and intermediate acuities, contrast sensitivity and glare and halos 10–13. While most of research focus on objective measures,9–14 patients’ perception of IOLs’ performance remains the cornerstone of lens choice.…”

Efficacy of trifocal intraocular lens: visual outcomes and patient satisfaction

“…In this study the mean monocular postoperative UDVA was 0.964 (0.8 -1) decimal (nearly 0.05 [0.1 -0.0] logMAR), this confirms the effectiveness of the evaluated lens in restoring far vision after lens removal. In our study, the post-operation results of UDVA were better than other studies [2,5,15,16] . The better visual results in our study were clear with significant variations of symptoms of refraction.…”

“…Cataract elimination and interchange of the refractory lens is popular acceptable and called Phacoemulsification. The tools, procedures and intraocular lens use in it are developing [1,2] . So the intraocular lens (multifocal) project and its development lead to improve visual acuity, the satisfaction of patients and life quality [3,4] .…”