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 Comparison of trifocal or hybrid multifocal-extended depth of focus intraocular lenses: a systematic review and meta-analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yueyang Zhong ◽  
Kai Wang ◽  
Xiaoning Yu ◽  
Xin Liu ◽  
Ke Yao
Keyword(s):  
Systematic Review ◽  
Visual Acuity ◽  
Meta Analysis ◽  
Visual Quality ◽  
Intraocular Lenses ◽  
Depth Of Focus ◽  
Refractive Lens Exchange ◽  
Extended Depth Of Focus ◽  
Refractive Lens ◽  
Near Visual Acuity

AbstractThis meta-analysis aimed to evaluate the clinical outcomes following implantation of trifocal intraocular lenses (IOLs) or a hybrid multifocal-extended depth of focus (EDOF) IOL in cataract or refractive lens exchange surgeries. We examined 13 comparative studies with bilateral implantation of trifocal (898 eyes) or hybrid multifocal-EDOF (624 eyes) IOLs published through 1 March 2020. Better uncorrected and corrected near visual acuity (VA) were observed in the trifocal group (MD: − 0.143, 95% CI: − 0.192 to − 0.010, P < 0.001 and MD: − 0.149, 95% CI: − 0.217 to − 0.082, P < 0.001, respectively), while the hybrid multifocal-EDOF group presented better uncorrected intermediate VA (MD: 0.055, 95% CI: 0.016 to 0.093, P = 0.005). Trifocal IOLs were more likely to achieve spectacle independence at near distance (RR: 1.103, 95% CI: 1.036 to 1.152, P = 0.002). The halo photic effect was generated more frequently by the trifocal IOLs (RR: 1.318, 95% CI: 1.025 to 1.696, P = 0.031). Contrast sensitivity and subjective visual quality yielded comparable results between groups. Trifocal IOLs demonstrated better performance at near distance but apparently led to more photic disturbances. Our findings provided the most up-to-date and comprehensive evidence by comparing the benefits of advanced IOLs in clinical practice.

scholarly journals Refractive Lens Exchange with Multifocal Intraocular Lens for Treatment of Chronic Intermittent Spasm of the Near Reflex

2017 ◽  
Vol 8 (3) ◽  
pp. 539-544 ◽  
Author(s):  
Guy Sallet
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Spontaneous Recovery ◽  
Multifocal Intraocular Lens ◽  
Refractive Lens Exchange ◽  
Final Treatment ◽  
Uncorrected Visual Acuity ◽  
Refractive Lens ◽  
Near Visual Acuity ◽  
Near Reflex

We report the case of an emmetropic 32-year-old female with decreased uncorrected visual acuity and diplopia due to intermittent episodes of spasm of the near reflex. Neurologic, general, and ophthalmic examination could not find an organic cause. Attempts at spontaneous recovery, psychogenic therapy, and cycloplegic therapy were unsuccessful and the symptoms persisted for almost 5 years, leading to psychogenic distress. Final treatment with refractive lens exchange and implantation of a toric trifocal intraocular lens resolved the spasm of the near reflex, resulting in an uncorrected distance and near visual acuity of 20/20.

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.

Implantation of multifocal lens in cataract surgery in patients after vitreoretinal surgery

2021 ◽  
pp. 10-12
Author(s):  
U.R. Altynbaev ◽  
Keyword(s):  
Visual Acuity ◽  
Retinal Detachment ◽  
Cataract Surgery ◽  
Macular Hole ◽  
Epiretinal Membrane ◽  
Vitreoretinal Surgery ◽  
Long Distance ◽  
Uncorrected Visual Acuity ◽  
Lens Implantation ◽  
Multifocal Lens

Purpose. To study the results of cataract surgery with implantation of multifocal IOLs in patients with various retinal pathologies who underwent vitreoretinal surgery. Material and мethods. Fifteen patients who had previously undergone vitreoretinal interventions for macular hole (n=6), epiretinal membrane (n=4) and retinal detachment (n=5) were observed. The criterion for choosing in favor of multifocal lens implantation was high visual acuity (0.7 or more) after undergoing vitreoretinal surgery. All patients underwent cataract phacoemulsification with implantation of two types of multifocal lenses: I group – IOL with an extended near focus (EDOF) (n=8) and II group – with a multifocal three-focus lens (n=7 eyes), including, in 3 cases – with toric component. In 55% of cases, the operation was performed on both eyes. The age of the patients varied from 34 to 59 years (51.4 ± 6.1 years). Results. Long-distance uncorrected visual acuity varied from 0.7 to 1.0 (0.85±0.25), which did not depend on the type of intraocular lens and correlated with morphological changes in the macular region of the retina. The highest uncorrected visual acuity (0.8±0.14) at an intermediate and near distance (0.75±0.25) was achieved in I group of patients. Postoperative spherical equivalent after 1 month corresponded to the planned target refraction (Em±0.5 diopters) in 14 cases and remained stable during 12 months of observation. In general, subjective satisfaction with MIOL implantation was higher in patients in II group, which was explained by minimal changes in the macular region of the retina. Additional spectacle correction for near was required for a patient of I group with a history of macular rupture, who underwent bilateral multifocal IOL implantation with high uncorrected visual acuity in the distance (OD=1.0 \ OS=1.0) and near (OD=0.6 \ OS=0,5). Conclusion. Implantation of multifocal lenses in patients with a good anatomical and functional outcome of vitreoretinal surgery allows obtaining high and stable functional results. Bilateral implantation of a multifocal lens with an extended near focus in patients with operated macular pathology does not cause specific adaptive difficulties in binocular vision. The choice in favor of multifocal lens implantation in patients with vitreoretinal pathology requires an individual approach and careful selection. Key words: multifocal lens, cataract, macular hole, retinal detachment, epiretinal membrane.

scholarly journals Treatment of Stable Keratoconus by Cataract Surgery with Toric IOL Implantation

2012 ◽  
Vol 1 (2) ◽  
pp. 128-130
Author(s):  
Tova Lifshitz ◽  
Jaime Levy ◽  
Anry Pitchkhadze
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Intraocular Lens ◽  
Toric Intraocular Lens ◽  
Toric Iol ◽  
Iol Implantation ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Cylinder Power ◽  
Best Corrected Visual Acuity

ABSTRACT We present the case of a 73-year-old patient who underwent successful phacoemulsification and toric intraocular lens (IOL) implantation to correct high stable astigmatism due to keratoconus and cataract. Preoperative refraction was −3.25 −4.0 × 98°. A toric IOL (Acrysof SN60T6) with a spherical power of 16.5 D and a cylinder power of 3.75 D at the IOL plane and 2.57 D at the corneal plane was implanted and aligned at an axis of 0°. Uncorrected visual acuity improved from 6/60 to 6/10. Postoperative best corrected visual acuity was 6/6, 6 months after the operation. In conclusion, phacoemulsification with toric IOL implantation can be performed in eyes with keratoconus and cataract. How to cite this article Levy J, Pitchkhadze A, Lifshitz T. Treatment of Stable Keratoconus by Cataract Surgery with Toric IOL Implantation. Int J Kerat Ect Cor Dis 2012;1(2):128-130.

scholarly journals Comparison of the Outcomes of Manual Small Incision Cataract Surgery (MSICS) and Phacoemulsification (PHACO) in Ghana

2021 ◽  
Vol 18 (3) ◽  
pp. 143-149
Author(s):  
Samuel Kyei ◽  
Ebenezer Zaabaar ◽  
Frank Assiamah ◽  
Michael Agyemang Kwarteng ◽  
Kofi Asiedu
Keyword(s):  
Visual Acuity ◽  
Postoperative Complications ◽  
Cataract Surgery ◽  
Medical Records ◽  
Cross Sectional Study ◽  
Small Incision Cataract Surgery ◽  
Cross Sectional ◽  
Small Incision ◽  
Uncorrected Visual Acuity

Background: The growing middle-class population of Ghana has seen more people being employed in visually demanding occupations  and hence there is an increased desire for quality post-cataract surgical visual outcomes. This study aimed at comparing the outcomes of manual small incision cataract surgery (MSICS) and phacoemulsification (PHACO) among Ghanaians. Methods: This was a retrospective cross-sectional study in which records of patients who underwent MSCIS or phacoemulsification by the same surgeon were reviewed. Results: Medical records of 248 eyes were reviewed, out of which 132 underwent PHACO and 116 had MSICS. A significant number of the  PHACO group had good (6/6–6/18) uncorrected visual acuity (UCVA) compared to the MSICS group at 1–2 weeks follow-up (p = 0.003) and 4–6 weeks follow-up (p = 0.002). MSICS resulted in a higher total astigmatic change compared to PHACO (p < 0.001). The PHACO grouphad a higher number of postoperative complications compared with the MSICS group (p <0.001). Postoperative borderline and poor  uncorrected visual acuity were associated with age, total astigmatic change, and postoperative complications. Conclusion: The postoperative UCVA outcomes at 4–6 weeks’ follow-up indicates that PHACO resulted in noticeably less spectacle dependency when compared to MSICS.

scholarly journals Comparison of Visual Outcomes and Patient Satisfaction Between two Diffractive Trifocal Intraocular Lenses

2021 ◽  
Author(s):  
asli cetinkaya yaprak ◽  
Mustafa Unal
Keyword(s):  
Visual Acuity ◽  
Patient Satisfaction ◽  
Cataract Surgery ◽  
Intraocular Lenses ◽  
World Health ◽  
Uncorrected Distance Visual Acuity ◽  
Significant Difference ◽  
Prospective Comparative Study ◽  
Health Organization ◽  
Clinical Trials Registry

Abstract Purpose To evaluate the clinical outcomes and visual quality of patients undergoing cataract surgery with the implantation of two different models of diffractive trifocal intraocular lenses (IOLs).MethodsThis randomized prospective comparative study included 60 eyes of 15 patients who scheduled to undergo bilateral cataract surgery with the implantation of two models of diffractive trifocal IOLs (RayOne Trifocal and AcrySof IQ PanOptix IOL). Monocular and binocular corrected and uncorrected distance visual acuity (CDVA, UDVA), intermediate visual acuity (DCIVA, UIVA) at 60 and 80 cm, near visual acuity (DCNVA, UNVA), and patient satisfaction were compared over a three-month follow-up.ResultsEach group comprised 30 eyes of 15 patients. No statistically significant differences were determined between the groups in terms of CDVA, UDVA, DCNVA and UNVA. The monocular and binocular UIVA values at 60 cm were better in the PanOptix IOL group (p=0.04 and p=0.01, respectively), and the DCIVA and UIVA values at 80 cm were better in the RayOne IOL group (p=0.01, p=0.047, p<0.001, and p=0.042, respectively). No statistically significant difference was found between the groups in relation to the frequency and severity of visual symptoms evaluated. Regarding discomfort, the RayOne IOL group had more bothersome halos and starbursts (p=0.026 and p=0.01, respectively).ConclusionBoth IOLs provided very good restoration of visual acuity. However, with the AcrySof IQ PanOptix IOL, the likelihood of patients experiencing bothersome halos and starbursts was less. The RayOne Trifocal IOL might be a better choice for patients who require further intermediate vision.The study was registered under the World Health Organization international clinical trials registry platform: NCT04655274, 30/11/2020, prospectively registered.

scholarly journals Mobile App for Pre- and Intraoperative Assessment of Astigmatism Correction with Toric Intraocular Lenses in Cataract Surgery

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Francisco Aecio Fernandes Dias ◽  
Vinicius Jose Fernandes Dias ◽  
Barbara de Araujo Lima Dutra ◽  
Anna Christina Siqueira Marques ◽  
Edgar Marçal ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Case Series ◽  
Mobile App ◽  
Mean Difference ◽  
Ease Of Use ◽  
Intraocular Lenses ◽  
Toric Iol ◽  
Astigmatism Correction ◽  
Case Series Study ◽  
The Mean

Purpose. To develop a mobile app that allows capturing and editing of photographs, performs image transposition and projection of a protractor with 360° axis markings, and permits accurate visualization of programmed alignment for the positioning of toric intraocular lenses (IOLs). Methods. In this prospective case series study, a codesign methodology was chosen to develop the Eye Axis Check application. After app development, measurements were obtained and comparisons were made between manual marks and toric IOL alignment without and with the app in 30 eyes that had undergone cataract surgery with toric IOLs. The mobile app was made available to 15 ophthalmic surgeons in different cities to assess its usability. Results. The users approved the developed application for its ease of use and utility. The mean difference between the markings made manually and those made with the app was 1° (±2°; range: 0°–5°), and the mean difference between the IOL position and the assessment made by the app was 3° (±3°; range: 0°–12°). Upon comparison of the agreement between the app measurements and the manual measurements for the IOL angle, no significant differences were found, and an excellent concordance (0.997) and a strong positive linear correlation (0.995) were observed. Conclusion. A mobile app for preoperative planning and intraoperative toric IOL alignment was developed and revealed to be useful and easy to use.

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