Correlation of Nuclear Cataract Lens Density Using Scheimpflug Images with Lens Opacities Classification System III and Visual Function

Grewal, Dilraj S.; Brar, Gagandeep; Grewal, Satinder Pal Singh

doi:10.1016/j.ophtha.2009.03.002

Cited by 134 publications

(97 citation statements)

References 36 publications

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“…There is no consensus regarding which method and variable are the most representative of the true optical status of the lens nucleus. 10 In a previous study, 17 the maximum value assessed at a single point was found to be most likely representative of the nucleus because the nuclear cataract is regarded as a homogenous structure. Another issue is the presence of reflex artifacts in front or within the lens.…”

Section: Discussionmentioning

confidence: 92%

“…Although the LOCS III is the most widely used grading system, there are concerns about its reproducibility. [16][17][18] Objective cataract quantification is essential for patient education and to predict phacodynamics. 6,7,9 Scheimpflug imaging enables objective lens densitometry evaluation that is not susceptible to observer variability and is considered to be a more sensitive and repeatable approach.…”

Section: Discussionmentioning

confidence: 99%

“…In our study, we used a ray-tracing aberrometer (iTrace) that has known advantages over Hartmann-Shack and other types of wavefront sensors. 19 Previous studies 17,20 showed that nuclear sclerosis is an age-related process, contributing to vision deterioration and lens optical densitometry changes. Our results are in accordance with these findings because the subjective (LOCS III NO score) and objective (Scheimpflug [Pentacam] nuclear staging score, mean density, and maximum density) lens evaluations yielded the same relationship with age and CDVA.…”

Section: Discussionmentioning

confidence: 99%

“…Because this is the main region with scattering changes in a large percentage of cases, this finding influences the real assessment of the nucleus optical density. 10,17 Customization of the cylindrical template might help overcome this limitation. Improvements in the Scheimpflug camera would be useful for a more detailed and specific assessment of the nucleus.…”

Section: Discussionmentioning

confidence: 99%

“…Less precise and repeatable measurements of Scheimpflug densitometry are more likely to occur in eyes with high-grade nuclear cataract. 10,17 The demand for premium cataract surgery has increased. Cataract surgery is being performed earlier, Figure 3.…”

Section: Discussionmentioning

confidence: 99%

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Scheimpflug lens densitometry and ocular wavefront aberrations in patients with mild nuclear cataract

Faria-Correia¹,

Lopes²,

Monteiro³

et al. 2016

Journal of Cataract and Refractive Surgery

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PURPOSE:To test correlations between Scheimpflug optical densitometry and ocular higher-order aberrations (HOAs) in patients with mild nuclear cataract.SETTING: Cornea and Refractive Surgery Department, Hospital de Braga, Braga, Portugal. DESIGN:Retrospective single-center study. METHODS:In eyes with mild nuclear cataract, lens densitometry was evaluated by Scheimpflug imaging (Pentacam HR), which provided an objective quantification (mean density and maximum density) and grading (nuclear staging score) of the crystalline lens. A visual function analyzer that combines ray-tracing aberrometry and Placido disk-based topography (iTrace) was used to evaluate the total ocular and internal HOAs. RESULTS:The study comprised 40 eyes of 30 patients. The mean density of the lens nucleus was 8.99% G 0.76% (SD) (range 7.5% to 10.8%), and the mean maximum density was 27.96% G 6.97% (range 16.9% to 56.1%). Regarding the score of nuclear staging of the Scheimpflug device, 28 eyes had level 0 and 12 eyes had level 1. Significant positive correlations were found between the mean density and maximum density parameters and the internal HOAs (r Z 0.661, P < .001 and r Z 0.570, P < .001, respectively).CONCLUSIONS: There were significant correlations between the quantification parameters derived from Scheimpflug lens densitometry and ocular HOAs. The integration of these technologies can help in clinical decision making and in understanding the subjective symptoms of patients with mild nuclear cataracts.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Scheimpflug lens densitometry and ocular wavefront aberrations in patients with mild nuclear cataract

Faria-Correia¹,

Lopes²,

Monteiro³

et al. 2016

Journal of Cataract and Refractive Surgery

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Prognostic Indicators and Outcome Measures for Surgical Removal of Symptomatic Nonadvanced Cataract

Charalampidou¹,

Loughman

Nolan

et al. 2011

Arch Ophthalmol

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To report changes in perceived visual functioning after surgery for symptomatic cataract with preoperative corrected distance visual acuity [CDVA] of 0.4 logMAR or better (Snellen equivalent, 20/50) and to investigate the relationship between any observed changes and preoperative physical characteristics and psychophysical consequences of the lens opacity and any changes in psychophysical findings after the procedure.Methods: Eighty-five patients with cataract completed a validated questionnaire concerning functional vision satisfaction and a series of visual performance assessments before and 2 months after cataract surgery. The lens optical density and Lens Opacities Classification System III score of the cataract were recorded. Correlations between changes in the Rasch-analyzed questionnaire score and changes in visual performance after cataract surgery, as well as preoperative psychophysical measures, lens optical density, and Lens Opacities Classification System III score, were determined. Results:The mean (SD) questionnaire score improved from 2.15 (0.36) to 1.54 (0.41) (P Ͻ.001). The preop-

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Cataract Forms and Grading

Wirbelauer¹

2023

Cataract and Lens Surgery

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Correlation of Nuclear Cataract Lens Density Using Scheimpflug Images with Lens Opacities Classification System III and Visual Function

Cited by 134 publications

References 36 publications

Scheimpflug lens densitometry and ocular wavefront aberrations in patients with mild nuclear cataract

Scheimpflug lens densitometry and ocular wavefront aberrations in patients with mild nuclear cataract

Prognostic Indicators and Outcome Measures for Surgical Removal of Symptomatic Nonadvanced Cataract

Cataract Forms and Grading

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