Laser Enhancement after Multifocal IOL Implantation

2008 ◽  
pp. 215-215
Author(s):  
Michael Knorz
Keyword(s):  
Iol Implantation ◽  
Multifocal Iol

scholarly journals Accuracy of theoretical IOL formulas for Panoptix intraocular lens according to axial length

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ayoung Choi ◽  
Hyunggoo Kwon ◽  
Sohee Jeon
Keyword(s):  
Intraocular Lens ◽  
Axial Length ◽  
Mean Absolute Error ◽  
Visual Quality ◽  
Absolute Error ◽  
Fort Worth ◽  
Iol Implantation ◽  
Multifocal Iol ◽  
Study Results ◽  
Study Population

AbstractThe accuracy of intraocular lens (IOL) calculations is suboptimal for long or short eyes, which results in a low visual quality after multifocal IOL implantation. The purpose of the present study is to evaluate the accuracy of IOL formulas (Barrett Universal II, SRK/T, Holladay 1, Hoffer Q, and Haigis) for the Acrysof IQ Panoptix TFNT IOL (Alcon Laboratories, Inc, Fort Worth, Texas, United States) implantation based on the axial length (AXL) from a large cohort of 2018 cases and identify the factors that are associated with a high mean absolute error (MAE). The Barrett Universal II showed the lowest MAE in the normal AXL group (0.30 ± 0.23), whereas the Holladay 1 and Hoffer Q showed the lowest MAE in the short AXL group (0.32 ± 0.22 D and 0.32 ± 0.21 D, respectively). The Haigis showed the lowest MAE in the long AXL group (0.24 ± 0.19 D). The Barrett Universal II did not perform well in short AXL eyes with higher astigmatism (P = 0.013), wider white-to-white (WTW; P < 0.001), and shorter AXL (P = 0.016). Study results suggest that the Barrett Universal II performed best for the TFNT IOL in the overall study population, except for the eyes with short AXL, particularly when the eyes had higher astigmatism, wider WTW, and shorter AXL.

Prevention of Hyperopic Surprise after LASIK in Patients with Refractive Multifocal Intraocular Lenses

2011 ◽  
Vol 21 (6) ◽  
pp. 826-829 ◽  
Author(s):  
César Albarrán-Diego ◽  
Gonzalo Muñoz ◽  
Teresa Ferrer-Blasco ◽  
Santiago García-Lázaro
Keyword(s):  
Intraocular Lenses ◽  
Laser In Situ Keratomileusis ◽  
Simple Method ◽  
Iol Implantation ◽  
Multifocal Iol ◽  
Multifocal Intraocular Lenses ◽  
Uncorrected Visual Acuity ◽  
Defocus Curve ◽  
Refractive Surprise

Purpose. Three cases of patients who developed a similar hyperopic defect in refraction following laser in situ keratomileusis (LASIK) after multifocal intraocular lens (IOL) implantation are described. Methods. Ophthalmologic evaluation including refractive status, corrected and uncorrected visual acuity (both at far and near), and corneal topography in patients presenting similar hyperopic refractive surprise in one eye as a result of LASIK refinement of residual ametropia after refractive multifocal IOL implantation. Results. Laser in situ keratomileusis enhancement for residual ametropia of −1.00 to −1.50 D in patients with a prior implantation of refractive multifocal IOL resulted in a refractive surprise of +2.25 to +2.50 D. After excluding other possible sources of error, an explanation for such a refractive surprise is suggested, and a simple method for avoiding this error is presented. Conclusions. Proper knowledge of the defocus curve and the use of a systematic method for determining subjective refraction in patients implanted with refractive multifocal IOLs will reduce the possibility of refractive surprise after LASIK enhancement in a bioptics procedure.

scholarly journals Correction of High Astigmatism after Penetrating Keratoplasty with Toric Multifocal Intraocular Lens Implantation

2017 ◽  
Vol 8 (2) ◽  
pp. 385-388 ◽  
Author(s):  
Raffaele Nuzzi ◽  
Francesca Monteu
Keyword(s):  
Intraocular Lens ◽  
Penetrating Keratoplasty ◽  
Multifocal Intraocular Lens ◽  
Iol Implantation ◽  
Multifocal Iol ◽  
Therapeutic Choice ◽  
Lens Implantation ◽  
Corneal Leukoma ◽  
Relaxing Incisions

After penetrating keratoplasty (PK), high astigmatism is often induced, being frequently about 4–6 dpt. According to the entity and typology of astigmatism, different methods of correction can be used. Selective suture removal, relaxing incisions, wedge resections, compression sutures, photorefractive keratectomy, and laser-assisted in situ keratomileusis can reduce corneal astigmatism and ametropia, but meanwhile they can cause a reduction in the corneal integrity and cause an over- or undercorrection. In case of moderate-to-high regular astigmatisms, the authors propose a toric multifocal intraocular lens (IOL) implantation to preserve the corneal integrity (especially in PK after herpetic corneal leukoma keratitis). We evaluated a 45-year-old patient who at the age of 30 was subjected to PK in his left eye due to corneal leukoma herpetic keratitis, which led to high astigmatism (7.50 dpt cyl. 5°). The patient was subjected to phacoemulsification and customized toric multifocal IOL implantation in his left eye. The correction of PK-induced residual astigmatism with a toric IOL implantation is an excellent choice but has to be evaluated in relation to patient age, corneal integrity, longevity graft, and surgical risk. It seems to be a well-tolerated therapeutic choice and with good results.

scholarly journals Predictive factor and kappa angle analysis for visual satisfactions in patients with multifocal IOL implantation

Eye ◽  
2011 ◽  
Vol 25 (9) ◽  
pp. 1187-1193 ◽  
Author(s):  
G Prakash ◽  
D R Prakash ◽  
A Agarwal ◽  
D A Kumar ◽  
A Agarwal ◽  
...  
Keyword(s):  
Predictive Factor ◽  
Iol Implantation ◽  
Multifocal Iol

scholarly journals Tactics of Two-Stage IOL Implantation in Difficult Refractive Cases

2021 ◽  
Vol 18 (3) ◽  
pp. 415-421
Author(s):  
A. A. Kasyanov
Keyword(s):  
High Efficiency ◽  
Rotational Instability ◽  
Observation Group ◽  
Two Stage ◽  
Guaranteed Accuracy ◽  
Iol Implantation ◽  
Multifocal Iol ◽  
Correction Of Astigmatism ◽  
High Degree ◽  
Target Refraction

In a number of complex refractive cases, the achievement of an accurate refractive result cannot be guaranteed. Simultaneous implantation of a toric or multifocal IOL for the correction of complex ametropias may be accompanied by a significant deviation from the target refraction. The tactics of two-stage implantation with the usage of an additional Sulcoflex IOL for the final correction of astigmatism and possible residual spherical ametropia allows achieving emmetropia. In our study, this method was used in 15 patients with difficult refractive cases. Toric, multifocal, and multifocal toric Sulcoflex IOL were used. Implantation of all Sulcoflex modifications was performed through a 2.4 mm temporal incision using wound assisted technology. In cases of high degree hypermetropia, preventive iridectomy was performed using a 23G vitrectome. The target refraction was achieved in the entire observation group. In the postoperative period, no significant level of ophthalmic hypertension was registered. No cases of introlens opacification, iridocyclitis, or rotational instability were registered either.The method of two-stage IOL implantation allows achieving the target refraction in difficult refractive situations with almost guaranteed accuracy. The calculation method provides good predictability of the refractive result. This technology significantly expands the indications for intraocular correction using toric and multifocal IOL, as well as the limits of correction of high degree astigmatism. Our Sulcoflex IOL implantation experience has shown their high efficiency and safety.

scholarly journals Clinical Outcomes of Patients with Refractive Aspheric Multifocal IOL Implantation

2014 ◽  
Vol 55 (7) ◽  
pp. 991
Author(s):  
Sung Yu ◽  
Jee Hyun Kim ◽  
Gwang Ja Lee ◽  
Kyoo Won Lee ◽  
Young Jeung Park
Keyword(s):  
Clinical Outcomes ◽  
Iol Implantation ◽  
Multifocal Iol

scholarly journals Visual Performance of Tecnis ZM900 Diffractive Multifocal IOL after 2500 Implants: A 3-Year Followup

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Leonardo Akaishi ◽  
Rodrigo Vaz ◽  
Graziela Vilella ◽  
Rodrigo C. Garcez ◽  
Patrick F. Tzelikis
Keyword(s):  
Visual Acuity ◽  
Visual Performance ◽  
Iol Implantation ◽  
Multifocal Iol ◽  
Uncorrected Distance Visual Acuity ◽  
Quality Of Vision ◽  
Near Visual Acuity ◽  
Minimum Followup ◽  
Second Procedure

Purpose. To evaluate visual performance for near, intermediate, and distant vision; complaints of photic phenomena, and patient satisfaction with the new diffractive multifocal IOL used in eyes which underwent phacoemulsification.Methods. Two thousand and five hundred consecutive eyes undergoing Tecnis ZM900 multifocal IOL implantation were included in this retrospective analysis. The minimum followup of 3 months was required after the surgery. Patients were assessed for uncorrected near visual acuity (UNVA) at a fixed distance (33 cm), uncorrected intermediate visual acuity (UIVA) at 60 cm, and uncorrected distance visual acuity (UDVA). Using a subjective questionnaire, patients satisfaction, their independence from using glasses, and the perception of glare and halo phenomena were also evaluated at the last follow-up.Results. Two thousand and five hundred eyes of 1558 patients underwent cataract surgery and Tecnis ZM900 multifocal IOL implantation. Four hundred and eighty seven patients (31.3%) were men, and 1071 (68.7%) were women. The mean age of the patients was 66.17 years. A UDVA of 20/30 or better was achieved by 85% of eyes. A UNVA of J1 was achieved by 93.7% of eyes and that of J2 or better was achieved by 98%. A UIVA of J4 or better was achieved by 65% and J5 or better was achived by more than 82.8% of the eyes in the study. Glare and halos were reported as severe by only 6.1% and 2.12% of patients, respectively. Ninety seven percent reported complete spectacle independence and 88% stated that they are totally satisfied with their quality of vision and would choose to have the same lens implanted again after the first implant. Five percent of the eyes in the study needed a second procedure (enhancement) to achieve a better visual result. No patient underwent lens exchange.Conclusion. Excellent near, intermediate, and distant vision was observed in patients implanted with the Tecnis ZM900 diffractive multifocal IOL. Spectacle independence and a minimum occurrence of photic phenomena make this IOL an excellent option in patients with cataract.

Sign in / Sign up

Export Citation Format

Share Document