Analysis of the Effect of Unified Diagnosis Framework for Automated Nuclear Cataract Grading Algorithm

2021 ◽  
Author(s):  
Shenming Hu ◽  
Chaoqun Liu ◽  
Mary Adu ◽  
Wei He
Keyword(s):  
Nuclear Cataract

Pathogenesis of Age-related Cataract: a systematic review of proteomic studies

2020 ◽  
Vol 17 ◽  
Author(s):  
Christina Karakosta ◽  
Argyrios Tzamalis ◽  
Michalis Aivaliotis ◽  
Ioannis Tsinopoulos
Keyword(s):  
Systematic Review ◽  
Oxidant Stress ◽  
Critical Role ◽  
Human Lens ◽  
Nuclear Cataract ◽  
Cataract Formation ◽  
Post Translational Modification ◽  
Ability To Act ◽  
Age Related

Background/Objective:: The aim of this systematic review is to identify all the available data on human lens proteomics with a critical role to age-related cataract formation in order to elucidate the physiopathology of the aging lens. Materials and Methods:: We searched on Medline and Cochrane databases. The search generated 328 manuscripts. We included nine original proteomic studies that investigated human cataractous lenses. Results:: Deamidation was the major age-related post-translational modification. There was a significant increase in the amount of αA-crystallin D-isoAsp58 present at all ages, while an increase in the extent of Trp oxidation was apparent in cataract lenses when compared to aged normal lenses. During aging, enzymes with oxidized cysteine at critical sites included GAPDH, glutathione synthase, aldehyde dehydrogenase, sorbitol dehydrogenase, and PARK7. Conclusion:: D-isoAsp in αA crystallin could be associated with the development of age-related cataract in human, by contributing to the denaturation of a crystallin, and decreasing its ability to act as a chaperone. Oxidation of Trp may be associated with nuclear cataract formation in human, while the role of oxidant stress in age-related cataract formation is dominant.

scholarly journals Determination of the density of human nuclear cataract lenses

2013 ◽  
Vol 8 (5) ◽  
pp. 1300-1304 ◽  
Author(s):  
KE XU ◽  
YANSHENG HAO
Keyword(s):  
Nuclear Cataract

scholarly journals A Novel Insertion Variant of CRYGD Is Associated with Congenital Nuclear Cataract in a Chinese Family

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0131471 ◽  
Author(s):  
Xiaotong Zhuang ◽  
Lianqing Wang ◽  
Zixun Song ◽  
Wei Xiao
Keyword(s):  
Chinese Family ◽  
Nuclear Cataract

scholarly journals Objective quantification of lens nuclear opacities using swept-source anterior segment optical coherence tomography

2021 ◽  
pp. bjophthalmol-2020-318334
Author(s):  
Wei Wang ◽  
Jiaqing Zhang ◽  
Xiaoxun Gu ◽  
Xiaoting Ruan ◽  
Xiaoyun Chen ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Visual Acuity ◽  
Anterior Segment ◽  
Training Dataset ◽  
Dissipated Energy ◽  
Nuclear Density ◽  
Optical Coherence ◽  
Nuclear Cataract ◽  
Swept Source ◽  
Ultrasonic Time

Background/aimsThe primary objective is to quantify the lens nuclear opacity using swept-source anterior segment optical coherence tomography (SS-ASOCT) and to evaluate its correlations with Lens Opacities Classification System III (LOCS-III) system and surgical parameters. The secondary objective is to assess the diagnostic performance for hard nuclear cataract.MethodsThis cross-sectional study included 1222 patients eligible for cataract surgery (1222 eyes). The latest SS-ASOCT (CASIA-2) was used to obtain high-resolution lens images, and the average nuclear density (AND) and maximum nuclear density (MND) were measured by a custom ImageJ software. Spearman’s correlations analysis was used to assess associations of AND/MND with LOCS-III nuclear scores, visual acuity and surgical parameters. The subjects were then split randomly (9:1) into the training dataset and validating dataset. Receiver operating characteristic curves and calibration curves were constructed for the classification on hard nuclear cataract.ResultsThe AND and MND from SS-ASOCT images were significantly correlated with nuclear colour scores (AND: r=0.716; MND: r=0.660; p<0.001) and nuclear opalescence scores (AND: r=0.712; MND: r=0.655; p<0.001). The AND by SS-ASOCT images had the highest values of Spearman’s r for preoperative corrected distance visual acuity (r=0.3131), total ultrasonic time (r=0.3481) and cumulative dissipated energy (r=0.4265). The nuclear density had good performance in classifying hard nuclear cataract, with area under the curves of 0.859 (0.831–0.886) for AND and 0.796 (0.768–0.823) for MND.ConclusionObjective and quantitative evaluation of the lens nuclear density using SS-ASOCT images enable accurate diagnosis of hard nuclear cataract.

scholarly journals Impact of rehabilitation measures on cognitive dysfunction in older patients after surgical treatment of nuclear cataract

2020 ◽  
Vol 22 (12) ◽  
pp. 89-92
Author(s):  
Evgenia V. Popova ◽  
◽  
Evgenia V. Popova ◽  
Evgenia V. Popova ◽  
◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Cognitive Abilities ◽  
Older Patients ◽  
Cognitive Status ◽  
Main Group ◽  
Control Group ◽  
Nuclear Cataract ◽  
Number Of Patients ◽  
Moderate Cognitive Impairment ◽  
Rehabilitation Measures

Background. The high prevalence of nuclear cataracts in older age groups is accompanied by a simultaneous decrease in cognitive abilities as a result of this ophthalmic disease, and other General somatic polymorbid pathology. Aim. To study the cognitive abilities of elderly and senile patients with nuclear cataracts during medical rehabilitation. Materials and methods. In clinical conditions, 68 elderly and senile patients with nuclear cataract underwent femtolaser-assisted cataract phacoemulsification with intraocular lens implantation, and in the postoperative period, medical and non-drug rehabilitation was performed (the main group). The control group con-sisted of 65 patients with nuclear cataract of the same age who also underwent the above-mentioned surgery without rehabilitation measures. The MMSE scale was used to assess cognitive impairment. Results. 9 months after surgical treatment, the cognitive status of patients in the main group improved from 17.4±0.2 to 20.7±0.3 points (p>0.05). Moderate initial cognitive dysfunction in patients of the main group changed to mild after 9 months, while in the control group it remained the same. At the same time, the proportion of patients with moderate cognitive impairment decreased significantly in the main group from 61.71±5.9% before rehabilitation to 13.2±4.1% after it was completed, and the number of patients with no cognitive deficit increased (p<0.001). In the control group, the number of patients with moderate cognitive impairment decreased from 60.0±6.0 to 46.2±6.2% (p>0.05). Conclusion. The implementation of rehabilitation measures in the postoperative period helps to improve the cognitive status of older patients with nuclear ca-taracts.

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