Effect of Limbal Incision Positions on Corneal Q-Value in Cataract Surgery: A Retrospective Study of Monofocal IOL and Trifocal IOL

Abstract Purpose: To compare clinical outcomes and subjective experience after bilateral implantation of two diffractive trifocal and one monofocal intraocular lenses (IOLs). Methods: Fourty-eight patients were allocated to receive bilateral implantation of the RayOne Trifocal IOL (Rayner), the AcrySof IQ PanOptix IOL (Alcon), or the AcrySof IQ SN60WF IOL (Alcon). At 1-month, 3-month, and 12-month follow-up visits, the tested outcomes were monocular and binocular uncorrected and corrected distance, intermediate at 70 cm, and near at 30 cm visual acuities, subjective refractive outcomes, defocus curves, contrast sensitivity and ocular aberrometry. Subjective patient satisfaction in terms of visual disturbance and spectacle independence was also evaluated. Results: Each group comprised 32 eyes (16 patients). Refractive outcomes of RayOne and PanOptix IOLs were comparable. Both trifocal IOLs demonstrated superior visual acuity to the AcrySof monofocal IOL at near and intermediate ranges and along the defocus curves at all points other than at 0.0 D. The patient satisfaction results were comparable between the RayOne and PanOptix trifocal IOL groups. Conclusion: Both trifocals performed similarly providing good visual outcomes at all distances, demonstrating superior visual acuity compared to the monofocal IOL. Patients implanted with these trifocal IOLs reported similar levels of quality of vision and satisfaction. The RayOne trifocal and PanOptix IOLs are a valuable alternative for patients wishing to seek spectacle independence and low visual disturbances when undergoing cataract surgery.

Download Full-text

Visual outcome after trifocal IOL implant in a patient with cornea guttata. A case report.

10.21203/rs.2.498/v1 ◽

2019 ◽

Author(s):

Jorge E. Valdez-Garcia ◽

Gustavo Ortiz-Morales ◽

Nallely Morales-Mancillas ◽

Denise Loya-Garcia ◽

Julio Hernández-Camarena

Keyword(s):

Cataract Surgery ◽

Visual Outcome ◽

Nuclear Cataract ◽

Optical Aberrations ◽

Blurred Vision ◽

Excellent Outcome ◽

Corneal Aberrations ◽

Cornea Guttata ◽

Trifocal Iol ◽

Monofocal Iol

Abstract Background We report the case and management of a patient that started with primary cornea guttata symptoms after cataract surgery with trifocal intraocular lens (IOL) implant. The unusual postoperative presentation of the disease in association with a trifocal IOL resulted in increased corneal surface aberrations that resulted in visual dissatisfaction. Case presentation A 67 year-old male was evaluated due to blurred vision for two months, as well as a desire to stop using glasses in his everyday life. At the initial refraction, myopia, corneal astigmatism and nuclear cataract were diagnosed in both eyes. A nuclear cataract was diagnosed in both eyes. Phacoemulsification surgery was performed in OS, implanting a trifocal IOL. The postoperative refraction in OS was -1.25DCx120º, with a best-corrected visual acuity (BCVA) of 20/20. Six months later, the patient kept complaining of blurred vision and night glare. In slit lamp examination, corneal guttae were denoted and changes in corneal endothelium morphology suggested primary cornea guttata. A monofocal IOL exchange was performed in order to reduce corneal aberrations with excellent outcome at 2-year follow up. Conclusions Screening for endothelial dysfunction is a key element for successful outcomes in cataract surgery. Corneal guttae accent optical aberrations when in combination with premium IOLs.

Download Full-text

Using tropicamide and phenylephrine without cyclopentolate for pupil dilation in cataract surgery reduces postoperative intraocular pressure rise

Asian Journal of Ophthalmology ◽

10.35119/asjoo.v17i3.845 ◽

2020 ◽

Vol 17 (3) ◽

pp. 285-289

Author(s):

Rachel Xuan ◽

Keith Ong

Keyword(s):

Intraocular Pressure ◽

Retrospective Study ◽

Cataract Surgery ◽

Medical Records ◽

Pressure Rise ◽

Pupil Dilation ◽

The Other ◽

Sample Population ◽

Iop Elevation ◽

Larger Sample

The aim of this retrospective study was to evaluate whether intraocular (IOP) elevation post-cataract surgery can be reduced by using tropicamide and phenylephrine only, without cyclopentolate. Medical records across two surgical facilities were analyzed. One surgical facility (Cohort A) used a combination of tropicamide, cyclopentolate, and phenylephrine preoperatively, while the other (Cohort B) used tropicamide and phenylephrine only. Of patients in Cohort A, 63.6% (n = 7) had a higher IOP in the operated eye, while it was only 27.3% (n = 3) in Cohort B. Therefore, it is preferable to exclude the use of cyclopentolate in the preoperative dilation regimen of patients undergoing cataract surgery. However, a study with a larger sample population is required to further evaluate the significance of these results.

Download Full-text

Corneal Higher-Order Aberrations after Microhook ab Interno Trabeculotomy and Goniotomy with the Kahook Dual Blade: Preliminary Early 3-Month Results

Journal of Clinical Medicine ◽

10.3390/jcm10184115 ◽

2021 ◽

Vol 10 (18) ◽

pp. 4115

Author(s):

Hiromitsu Onoe ◽

Kazuyuki Hirooka ◽

Hideaki Okumichi ◽

Yumiko Murakami ◽

Yoshiaki Kiuchi

Keyword(s):

Risk Factors ◽

Visual Acuity ◽

Retrospective Study ◽

Cataract Surgery ◽

Higher Order ◽

Higher Order Aberrations ◽

Postoperative Changes ◽

The Mean ◽

Kahook Dual Blade ◽

Ab Interno

We examined postoperative corneal higher-order aberrations (HOAs) present after combined phacoemulsification with either microhook ab interno trabeculotomy (μLOT-Phaco) or goniotomy, using the Kahook Dual Blade (KDB-Phaco). Retrospective study: A total of 45 eyes underwent μLOT-Phaco and KDB-Phaco (LOT-Phaco) procedures, with 21 eyes that underwent cataract surgery alone used as controls. Visual acuity and corneal HOAs, coma-like aberrations, and spherical-like aberrations were analyzed before and at 1, 2, and 3 months after the surgeries. Risk factors that could potentially influence HOAs were evaluated. No significant postoperative changes were noted for corneal HOAs, coma-like aberrations, and spherical-like aberrations after cataract surgery alone. The mean corneal HOAs, coma-like aberrations, and spherical-like aberrations were 0.222 ± 0.115 μm, 0.203 ± 0.113 μm, and 0.084 ± 0.043 μm at baseline and 0.326 ± 0.195 μm (p < 0.001), 0.302 ± 0.289 μm (p = 0.03), and 0.150 ± 0.115 μm (p < 0.001) at 3 months after LOT-Phaco, respectively. Results of the analysis for risk factors suggested that a longer incision in Schlemm’s canal could influence corneal HOAs, coma-like aberrations, and spherical-like aberrations after LOT-Phaco. Although no significant postoperative changes were observed in corneal HOAs and coma-like or spherical-like aberrations after cataract surgery alone, a significant increase in corneal HOAs and coma-like or spherical-like aberrations remained after the LOT-Phaco procedure.

Download Full-text

Quantitative adjustment of spherical aberration for aspheric refractive surgery: A Pilot Study

10.21203/rs.3.rs-199889/v1 ◽

2021 ◽

Author(s):

Jun Zhang ◽

Li Zheng ◽

Xia Zhao ◽

Jindong Gao ◽

Yixuan Zhang ◽

...

Keyword(s):

Retrospective Study ◽

Pilot Study ◽

Refractive Surgery ◽

Spherical Aberration ◽

Q Value ◽

D Values ◽

Q Values ◽

Corneal Tomography

Abstract Background: The aim of the study is to introduce the acquisition of target diameter spherical aberration in term of diopter (SA-D), and to report the distribution of SA-D in patients with myopia. Methods: This was a retrospective study of patients who underwent therapeutic refractive surgery at Hangzhou MSK Eye Hospital between 10/2018 and 12/2018. The corneal Q values and apex curvature of the anterior and posterior surfaces were measured at 3.0, 4.0, 5.0, 6.0, and 7.0 mm of aperture diameters using corneal tomography. Results: In total, 531 females and 384 males were included. The anterior corneal SA-D values were: 0.39±0.19, 0.63±0.27, 0.97±0.36, 0.90±0.30, and 0.83±0.29 D at 3.0, 4.0, 5.0, 6.0, and 7.0 mm; the whole corneal values were: 0.26±0.20, 0.44±0.27, 0.70±0.36, 0.66±0.30, and 0.59±0.28 D. SE was positively correlated with anterior corneal peripheral Q-value and SA-D and whole ocular peripheral SA-D. Conclusions: Both corneal anterior and posterior Q values of myopia patients decreased while diameter increased. Both anterior and whole corneal SA-D increases significantly while diameter increases within 5mm, and both anterior and whole corneal SA-D outside 5mm decreases slightly while diameter increases. SE was positively correlated with anterior corneal peripheral Q-value and SA-D and whole ocular peripheral SA-D.

Download Full-text