scholarly journals Evaluation of Distance-Specific Uncorrected Visual Acuity in Eyes Implanted with Extended Depth-of-Field Intraocular Lenses

2020 ◽  
Vol 49 (0) ◽  
pp. 97-103
Author(s):  
Yuka Sasaki ◽  
Hisae Nakamura ◽  
Ritsuko Miyata ◽  
Mutsumi Mitamura ◽  
Tsukasa Mabara ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Intraocular Lenses ◽  
Depth Of Field ◽  
Uncorrected Visual Acuity ◽  
Extended Depth Of Field

scholarly journals Correction of High Corneal Astigmatism during Cataract Surgery

2019 ◽  
Vol 15 (4) ◽  
pp. 405-410 ◽  
Author(s):  
K. B. Pershin ◽  
N. F. Pashinova ◽  
M. E. Konovalov ◽  
E. P. Gurmizov ◽  
O. Yu. Zubenko ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Surgical Treatment ◽  
Clinical Experience ◽  
Intraocular Lens ◽  
Surgical Intervention ◽  
Corneal Astigmatism ◽  
Intraocular Lenses ◽  
Toric Intraocular Lens ◽  
Surgical Interventions ◽  
Uncorrected Visual Acuity

Patients, who need cataract surgical treatment, often fail to achieve a high uncorrected visual acuity after surgery due to the concomitant astigmatism involved. Currently, surgeons are increasingly performing combined surgical interventions, including relaxing limbal keratotomic incisions (manual keratotomy) or femtoarcuatous keratotomy, as well as implanting toric intraocular lenses. In recent years, additional toric intraocular lenses have been available. Purpose: to analyze our own clinical experience of implanting an additional toric intraocular lens to correct corneal astigmatism in three clinical cases. The article presents our clinical experience of successful correction of residual corneal astigmatism after previous cataract phacoemulsification with the implantation of a monofocal toric intraocular lens in three patients patients aged 70, 61 and 54 years. In all cases, an additional toric intraocular lens Add-on Torica-sPB pre-filled in the cartridge with a good refractive effect was implanted. The uncorrected visual acuity was 1.0 in all the investigated cases at the follow-upo period of 6 months after the surgical intervention. Calculation of the toric intraocular lens optical power was performed using an online calculator. A feature of surgical intervention was the repositioning of the additional toric intraocular lens into the ciliary sulcus. Changes in the data of keratotopography before and after surgery were absent. In none of the investigated cases, intra- and postoperative complications and dislocation of the implanted additional toric intraocular lens were determined. Based on these cases, high predictability, efficacy and safety of implantation of an additional toric intraocular lens are shown, in the case of residual middle-grade corneal astigmatism after the initial cataract phacoemulsification with the toric intraocular lens implantation. This approach can be successfully used in patients during one-stage surgical treatment of cataract and associated high-grade corneal astigmatism, expanding existing protocols for the treatment of this group of patients.

scholarly journals Extended Depth-of-Field Intraocular Lenses: An Update

2020 ◽  
Vol 9 (3) ◽  
pp. 194-202
Author(s):  
Piotr Kanclerz ◽  
Francesca Toto ◽  
Andrzej Grzybowski ◽  
Jorge L. Alio
Keyword(s):  
Intraocular Lenses ◽  
Depth Of Field ◽  
Extended Depth Of Field

scholarly journals Clinical Experience of Using Intraocular Lenses

2019 ◽  
Vol 16 (3) ◽  
pp. 304-309
Author(s):  
A. D. Chernysheva ◽  
V. O. Afanasyeva
Keyword(s):  
Visual Acuity ◽  
Postoperative Period ◽  
Early Postoperative Period ◽  
Intraocular Lenses ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
The Mean ◽  
Basic Studies ◽  
The Given ◽  
Observation Period

Aim: to analyze the data obtained from using of intraocular lenses — the hydrophobic IOL Citrin and a hydrophilic IOL Aquamarine, produced by Russian company — NanOptic. Materials and methods. A total of 56 IOLs, produced by NanOptic (38 hydrophobic IOLs Citrine and 18 hydrophilic IOLs Aquamarine) were implanted. The observation period was from 3 to 12 months. The indication for phacoemulsification was age cataract. The age of the patients was 54–85. Patients before the operation were conducted basic studies. The mean uncorrected visual acuity before the operation was (UCVA) 0.121 ± 0.120 (0.001–0.3), and the mean corrected visual acuity was (BCVA) 0.187 ± 0.140 (0.001–0.6). All patients underwent standard phacoemulsification. Results. The early postoperative period was without any complications. In the postoperative period the mean UCVA in patients with “Citrine” and “Aquamarine” was 0.90 ± 0.10 (0.7–1.0) and 0.96 ± 0.07 (0.8–1.0) accordingly, and the mean BCVA was 0.94 ± 0.07 (0.8–1.0) and 0.99 ± 0.02 (0.9–1.0) accordingly. In all cases, the refraction obtained was consistent with the prediction. The error in IOL calculation was minimal and permissible. There weren’t any case of secondary cataract in patients with hydrophobic IOLs, and 3 cases of lens posterior capsule fibrosis of 1 degree in patients with hydrophilic IOLs in 3–12 months observation. The position of IOL in capsule bag was stable. Conclusions. The results of implantation of new Russian-made IOLs on the given parameters appeared to be satisfactory, that allows to recommend them for implantation in cataract surgery.

scholarly journals Toric Intraocular Lens Implants for Astigmatism

2012 ◽  
Vol 06 (03) ◽  
pp. 164
Author(s):  
Irene C Kuo ◽  
Victor E Reviglio ◽  
◽  
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Intraocular Lenses ◽  
Toric Intraocular Lens ◽  
Refractive Lens Exchange ◽  
Astigmatism Correction ◽  
Uncorrected Visual Acuity ◽  
Refractive Lens ◽  
Multifocal Lens ◽  
High Level

Toric intraocular lenses are available in our surgical armamentarium for use in cataract surgery, refractive lens exchange, phakic lens procedures and multifocal lens procedures. These lens implants enjoy a high level of success in terms of post-operative uncorrected visual acuity, astigmatism correction and safety. With time, toric phakic lens implants, not available worldwide, may gain popularity as more surgeons gain comfort and confidence in offering and performing an elective intraocular procedure.

scholarly journals Descemet Membrane Endothelial Keratoplasty for Corneal Decompensation Secondary to Phakic Intraocular Lenses

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Ester Fernández López ◽  
Cristina Peris Martínez
Keyword(s):  
Visual Acuity ◽  
Postoperative Complications ◽  
Intraocular Lenses ◽  
Bullous Keratopathy ◽  
Step Procedure ◽  
Uncorrected Visual Acuity ◽  
Primary Graft Failure ◽  
Phakic Intraocular Lenses ◽  
Corneal Decompensation ◽  
One Year

Purpose. To describe the surgical technique and clinical outcomes of bilensectomy (pIOL explant and phacoemulsification), followed by DMEK performed for bullous keratopathy secondary to pIOL. Methods. Seven eyes of seven patients, who developed corneal decompensation after pIOL implantation, underwent bilensectomy followed by DMEK in a two-step procedure. Main outcome measures included uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), refraction, endothelial cell density (ECD) at 1, 3, 6, and 12 months, and intraoperative and postoperative complications. Results. DMEK was performed at a mean time of 9.83 ± 8.23 months after bilensectomy. BCVA (log MAR) improved in all eyes, increasing from 1.11 ± 0.78 preoperatively to 0.54 ± 0.21, 0.28 ± 0.23, 0.21 ± 0.21, and 0.17 ± 0.17 at 1, 3, 6, and 12 months after DMEK. One year after surgery, mean spherical equivalent and cylinder were −0.70 ± 0.92 D and −1.50 ± 0.54 D, respectively. ECD decreased by 62 ± 4%, 69 ± 4%, 74 ± 4%, and 77 ± 3% at 1, 3, 6, and 12 months after DMEK. There was one case of primary graft failure and no other postoperative complications. Conclusions. The two-step technique bilensectomy followed by DMEK is a feasible technique for the management of bullous keratopathy secondary to pIOL, providing a fast visual recovery with good visual and refractive results.

scholarly journals Prospective assessment of plate-haptic rotationally asymmetric multifocal toric intraocular lens with near addition of + 1.5 diopters

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Tetsuro Oshika ◽  
Kazuno Negishi ◽  
Toru Noda ◽  
Hiroyuki Arai ◽  
Mikio Inamura ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contrast Sensitivity ◽  
Intraocular Lenses ◽  
Rotational Stability ◽  
Intermediate Vision ◽  
Toric Iols ◽  
Uncorrected Visual Acuity ◽  
Prospective Assessment ◽  
Defocus Curve ◽  
Near Visual Acuity

Abstract Background To prospectively evaluate surgical results following implantation of rotationally asymmetric, plate-haptic, refractive segmented multifocal toric intraocular lenses (IOLs) with near addition of + 1.5 diopters (D) (Lentis Comfort LS-313 MF15T, Oculentis GmbH). Methods In 59 eyes of 41 patients, ocular examinations were conducted before and 1 day, 1 week, 1, 3, and 6 months after surgery. Uncorrected (UDVA) and corrected (CDVA) distance visual acuity, uncorrected (UIVA) and distance-corrected (DCIVA) intermediate visual acuity at 70 cm, and uncorrected (UNVA) and distance-corrected (DCNVA) near visual acuity at 30 cm were tested. A defocus curve was drawn, and the degree of disturbing photic phenomena were questioned. Results The IOL showed excellent rotational stability; the average absolute rotation was 1.66 ± 1.17 degrees from 1 day 1 to 6 months postoperatively, and 98.1 and 100% of eyes yielded rotation of less than 5 and 10 degrees, respectively. Postoperative distance and intermediate visual acuity were highly satisfactory; UDVA, CDVA, UIVA, and DCIVA were about 20/20, 20/16, 20/25, 20/25, respectively. Near visual acuity was suboptimal; UNVA and DCNVA were at approximately 20/60. The defocus curve analysis showed that 20/25 and 20/40 uncorrected visual acuity was attained at as close as 60 and 40 cm, respectively. Contrast sensitivity was within a normal range, and subjective photic phenomena were minimum. Conclusions The refractive segmented, rotationally asymmetric multifocal toric IOLs with + 1.5 D near addition showed superb rotational stability and highly satisfactory distance and intermediate vision. Contrast sensitivity was high and incidence of photic symptoms was very low. Trial registration This study was registered at JAPIC Clinical Trials Information, ID: JapicCTI-183,877, https://www.clinicaltrials.jp/cti-user/trial/Search.jsp (February 5, 2018).

scholarly journals Assessment of imaging with extended depth-of-field by means of the light sword lens in terms of visual acuity scale

2015 ◽  
Vol 6 (5) ◽  
pp. 1738 ◽  
Author(s):  
Karol Kakarenko ◽  
Izabela Ducin ◽  
Krzysztof Grabowiecki ◽  
Zbigniew Jaroszewicz ◽  
Andrzej Kolodziejczyk ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Depth Of Field ◽  
Extended Depth Of Field

scholarly journals MODERN ASPECTS OF MULTIFOCAL INTRAOCULAR CORRECTION: A REVIEW

2017 ◽  
Vol 72 (4) ◽  
pp. 268-275 ◽  
Author(s):  
T. A. Morozova ◽  
D. F. Pokrovskiy ◽  
I. B. Medvedev ◽  
T. Z. Kerimov
Keyword(s):  
Visual Acuity ◽  
Power Level ◽  
Visual Quality ◽  
Functional Results ◽  
Clinical Results ◽  
Intraocular Lenses ◽  
Multifocal Iol ◽  
Multifocal Intraocular Lenses ◽  
Uncorrected Visual Acuity ◽  
Additional Segment

During the last decade multifocal intraocular lenses (IOL) became widely used in cataract surgery and proved to be effective in recovery of visual functions. Lots of clinical studies with different multifocal IOL models showed high effectiveness of multifocal correction to achieve good visual quality for far, intermediate, and near distances. Uncorrected visual acuity at a distance is equal to multifocal and monofocal correction, while uncorrected near vision is significantly better with multifocal IOLs. Additional segment position in asymmetric multifocal IOL models did not significantly influence on visual acuity. Multiple multifocal IOL designs (bifocal, trifocal) and ADD power level provide different functional results for near and intermediate distances which allows to select the specific IOL model depending on the patient`s needs. The review covers the following aspects of multifocal intraocular correction: update for classification of multifocal IOLs, visual acuity (functional results) at different distances after multifocal IOL implantation, comparison of clinical results with different multifocal IOL designs and add power levels, influence of add segment position in asymmetric multifocal IOLs on visual quality, comparison between multifocal and monofocal correction.

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