Comparison of ocular wavefront aberrations in subluxated lenses before and after lens extraction with intraocular lens implantation

Srivastava, Samaresh; Vasavada, Vaishali; Vasavada, Shail; Praveen, Mamidipudi R.; Reddy, Rajendra; Vasavada, Abhay R.

doi:10.1016/j.jcrs.2017.12.017

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…A wavefront aberrometry scan was performed with a ray-tracing aberrometer (iTrace, Tracey Technologies, Houston, TX) preoperatively and at the final 1 month follow-up as previously described [19]. Using the iTrace, we measured the optical quality parameters (MTF and SR) of the eye and DLI.…”

Section: Ray-tracing Aberrometrymentioning

confidence: 99%

Comparison of optical quality and distinct macular thickness in femtosecond laser-assisted versus phacoemulsification cataract surgery

et al. 2020

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Background: Optical quality and macular thickness changing optical quality is rarely reported after femtosecond laser-assisted cataract surgery (FLACS). In current research, we evaluated optical quality recovery and distinct macular thickness changes after FLACS and phacoemulsification cataract surgery (PCS). Methods: A total of 100 cataract patients (100 eyes) were included (50 eyes for the FLACS group and 50 eyes for the PCS group). Modulation transfer function (MTF), point spread function (PSF) and dysfunctional lens index (DLI) were measured by a ray-tracing aberrometer (iTrace). Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were also assessed pre-operation,1 week and 1 month after surgery. The MTF values at spatial frequencies of 5, 10, 15, 20, 25 and 30 cycles/degree (c/d) were selected. We used optical coherence tomography (OCT) to assess the macular thickness of different regions pre-operatively and1month after the surgery. Results: In PCS group, we found the statistically significant differences between pre-operation and post-operation in DLI (p < 0.0001), PSF (strehl ratio, SR) (p = 0.027) and MTF (p = 0.028), but not intraocular pressure (IOP) (p = 0.857). The differences between pre-operation and post-operation for DLI (p = 0.031), SR (p = 0.01) and IOP (p = 0.03), but not MTF (p = 0.128) were also found in FLACS group. The differences were statistically significant when the spatial frequencies were at 5, 10 and 25 (p = 0.013, 0.031 and 0.048) between pre-operation and post-operation in PCS group but not FLACS group at 1 month. In PCS group, we found the differences between pre-operation and postoperation in nasal inter macular ring thickness (NIMRT) (p = 0.03), foveal volume (FV) (p = 0.034) and average retinal thickness (ART) (p = 0.025) but not FLACS group at 1 month. Conclusion: FLACS is safe that did not cause significant increase of macular thickness in current study. However, it also cannot produce better optical quality. In contrast, PCS can produce macular thickness changes, but better optical quality recovery. The slightly retinal change may not affect optical quality.

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Section: Ray-tracing Aberrometrymentioning

confidence: 99%

Comparison of optical quality and distinct macular thickness in femtosecond laser-assisted versus phacoemulsification cataract surgery

et al. 2020

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“…[30] In addition, surgery with IOL-implantation was reported to signi cantly reduce intraocular astigmatism and high-order aberrations caused by decentration and tilt of the crystalline lens, which may promote normal visual development. [31] Although there was no signi cant difference between baseline SE <-6D subgroup and in non-surgery group, mixed-effect linear regression showed that greater baseline SE was associated with slower myopic progression.…”

Section: Discussionmentioning

confidence: 86%

Longitudinal changes of refractive error in preschool children with congenital ectopia lentis

Lian,

Hu,

Liu

et al. 2024

Int Ophthalmol

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Background: Congenital ectopia lentis (CEL) is a hereditary eye disease which severely impacts preschool children's visual function and development. This study aimed to evaluate the longitudinal changes in spherical equivalent (SE) refractive error in preschool children with CEL.Methods: A retrospective cohort study was conducted at Zhongshan Ophthalmic Center, Guangzhou, China. Medical records of CEL patients under 6-year-old who were diagnosed with Marfan syndrome at the initial visit from January, 2014 to March, 2022 were collected and were divided into surgery and nonsurgery groups. Mean change rate of SE in the two groups were evaluated and the potential associated factors of SE change rate were investigated by mixed-effect regression model.Results: A total of 94 preschool patients from 14 provinces of China were included. Among the 42 children of the surgery group, the mean age with standard deviation (SD) was 5.02±0.81 years and patients experienced a myopic shift of -0.05±0.09 D/month in average. The mean age with SD of the 52 children of the non-surgery group was 4.34±1.02 years and the mean myopic shift was -0.09±0.14 D/month. The mixed-effect regression model identi ed that higher degree of myopia at baseline was associated with slower myopic shift both in surgery (β= 0.901, 95% CI: 0.822~0.980, P< 0.001) and in non-surgery group (β= 1.006, 95% CI: 0.977~1.034, P< 0.001) in CEL patients. Surgical treatment (β= 2.635, 95% CI: 1.376~3.894, P< 0.001) was associated with slower myopic shift in all participants CEL patients.Conclusions: Myopic progression was slower in the surgery group than in the non-surgery group of CEL. Preschool CEL patients who met the surgical indication are suggested being performed with timely surgery to slow down the myopic progression.This study was approved by the Ethical Committee of the Zhongshan Ophthalmic Center, Sun Yat-sen University (ID: 2020KYPJ146) and was conducted in accordance with the tenets of the Declaration of Helsinki (as revised in 2013). Due to the retrospective nature of the study, informed consent was waived. SubjectsThis retrospective study was conducted at Zhongshan Ophthalmic Center, Guangzhou, China. All paediatric CEL patients with age < 6 years diagnosed with Marfan syndrome at the initial visit from January, 2014 to March, 2022 were included, since the age from 0 to 6 was regarded as a crucial period for ocular development. [10,19]. Binocular symmetrical subluxated lenses without history of ocular trauma, neoplasm, glaucoma or uveitis, were regarded as CEL. Marfan syndrome was diagnosed according to the revised Ghent nosology. [20] Exclusion criteria were as follows: (a) with history of corneal or fundus disorders, (b) with severe postoperational complications such as uveitis, glaucoma and retinal detachment, (c) with invalid refraction or less than 6 months of follow-up visits. Eligible subjects were divided into surgery group or non-surgery group according to the treatment procedure. Surgical indications in our clinical practice are as follows: (a)S...

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“…Technologies, Houston, TX) preoperatively and at the final 1 month follow-up as previously described [19]. Using the iTrace, we measured the optical quality parameters (MTF and SR) of the eye and DLI.…”

Section: Ray-tracing Aberrometrymentioning

confidence: 99%

Comparison of Optical Quality and Distinct Macular Thickness in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

Wang¹,

Zhang

Qin

et al. 2019

Preprint

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Background: Optical quality and macular thickness changing optical quality is rarely reported after femtosecond laser-assisted cataract surgery. In current research, we evaluated optical quality recovery and distinct macular thicknesschanges after FLACS and phacoemulsification cataract surgery (PCS). Methods: A total of 100 cataract patients (100 eyes) were included (50 eyes for the FLACS group and 50 eyes for the PCS group). Modulation transfer function (MTF), point spread function (PSF) and dysfunctional lens index (DLI) were measured by a ray-tracing aberrometer (iTrace). Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were also assessed pre-operation and 1 month after surgery. The MTF values at spatial frequencies of 5, 10, 15, 20, 25 and 30 cycles/degree (c/d) were selected. We used optical coherence tomography (OCT) to assess the macular thickness of different regions pre-operatively and1month after the surgery. Results: In PCS group, we found the statistically significant differences between pre-operation and post-operation in DLI ( p <0.0001), PSF(strehl ratio, SR) ( p= 0.027) and MTF ( p =0.028), but not intraocular pressure (IOP) ( p =0.857). The differences between pre-operation and post-operation for DLI ( p =0.031), SR ( p =0.01) and IOP ( p =0.03), but not MTF ( p =0.128) were also found in FLACS group. The differences were statistically significant when the spatial frequencies were at 5, 10 and 25 ( p =0.013, 0.031 and 0.048) between pre-operation and post-operation in PCS group but not FLACS group. In PCS group, we found the differences between pre-operation and post-operation in nasal inter macular ring thickness (NIMRT) ( p =0.03), foveal volume (FV) ( p =0.034) and average retinal thickness (ART) ( p =0.025) but not FLACS group. Conclusion: FLACSis safe that did not cause significant increase of macular thickness in current study. However, it also cannot produce better optical quality. In contrast,PCS can produce macular thickness changes, but better optical quality recovery. The slightly retinal change may not affect optical quality.

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Comparison of ocular wavefront aberrations in subluxated lenses before and after lens extraction with intraocular lens implantation

Abstract: Lens extraction with IOL fixation in eyes with subluxated lenses significantly reduced ocular HOAs and improved the MTF.

Cited by 8 publications

References 10 publications

Comparison of optical quality and distinct macular thickness in femtosecond laser-assisted versus phacoemulsification cataract surgery

Comparison of optical quality and distinct macular thickness in femtosecond laser-assisted versus phacoemulsification cataract surgery

Longitudinal changes of refractive error in preschool children with congenital ectopia lentis

Comparison of Optical Quality and Distinct Macular Thickness in Femtosecond Laser-Assisted versus Phacoemulsification Cataract Surgery

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