scholarly journals Anterior segment OCT application in quantifying posterior capsule opacification severity with varied intraocular lens designs

2021 ◽  
Vol 14 (9) ◽  
pp. 1384-1391
Author(s):  
Sha-Sha Yu ◽  
◽  
Ya-Wen Guo ◽  
Yun Zhao ◽  
Xiao-Yong Yuan ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Axial Length ◽  
Anterior Segment ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Severity Assessment ◽  
Cross Sectional ◽  
Function Impairment ◽  
The Relationship

AIM: To evaluate the application of anterior segment-optical coherence tomography (AS-OCT) in posterior capsule opacification (PCO) severity assessment and analyse the relationship between PCO severity and intraocular lens (IOL) characters. METHODS: PCO patients were prospectively recruited. Cross-sectional images of the anterior segment at horizontal and vertical meridians were acquired with AS-OCT. The area of the IOL-PC (posterior capsular) space and PCO severity (area, thickness, and density at 3 mm and 5 mm IOL optic regions) were measured. The relationship between PCO severity and visual acuity, comparisons of PCO severity and IOL-PC space using varied IOL designs were analysed. RESULTS: One hundred PCO eyes were enrolled. IOL-PC space, PCO thickness and area were positively correlated with axial length. In addition, PCO area and thickness were positively correlated with visual acuity when it was ≤0.52 logMAR. The cut-off level of visual acuity should be 0.52 logMAR. With varied IOL designs, 3-piece C haptic IOL showed a smaller PCO area and thickness than the 1-piece 3 haptic IOL and 1-piece 4 haptic IOL. PCO area and thickness values for an IOL with a diameter ≤11.0 mm was greater than for an IOL with a diameter of 12.5 mm, and the differences were statistically significant. PCO area and thickness increased when IOL haptic angulation increased (from 0 to 12 degrees). CONCLUSION: In PCO eyes, cut-off level of visual acuity is 0.52 logMAR. With more severe PCO, visual acuity maybe not enough to describe the visual function impairment. PCO severity and IOL-PC space are significantly correlated with axial length and IOL design and material.

scholarly journals AS-OCT application in quantifying Posterior capsule opacification severity with varied IOL designs

2020 ◽  
Author(s):  
SHASHA YU ◽  
Chengzhe Lu ◽  
Yawen Guo ◽  
Yun Zhao ◽  
Xiaoyong Yuan
Keyword(s):  
Visual Acuity ◽  
Axial Length ◽  
Visual Function ◽  
Anterior Segment ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Severity Assessment ◽  
Cross Sectional ◽  
Function Impairment ◽  
The Relationship

Abstract Background To evaluate application of AS-OCT in PCO severity assessment and analyse relationship between PCO severity and IOL characters. Methods PCO patients were prospectively recruited. Cross-sectional images of the anterior segment at horizontal and vertical medians were acquired with AS-OCT. The area of the IOL-PC (posterior capsular) space and PCO severity (area, thickness and density at 3 mm and 5 mm IOL optic regions) were measured. The relationship between visual acuity and PCO severity, comparisons of PCO severity and IOL-PC space using varied IOL designs were analysed. Results One hundred PCO eyes were enrolled. IOL-PC space and PCO thickness and area was positively correlated with axial length. The cut-off level of visual acuity: was 0.52 Log MAR. Visual acuity were positively correlated with PCO area and thickness when visual acuity was ≤ 0.52 Log MAR. 3-piece C haptic IOL showed a smaller PCO area and thickness than the 1-piece 3 haptic IOL and 1-piece 4 haptic IOL. PCO area and thickness values for an IOL with a diameter ≤ 11.0 mm were greater than for an IOL with a diameter of 12.5 mm. The differences were statistically significant. PCO area and thickness increased when IOL haptic angulation increased (from 0 to 12 degrees). Conclusions In PCO eyes, cut-off level of visual acuity was 0.52 Log MAR. With more severe PCO, visual acuity maybe not enough to describe the visual function impairment. PCO severity and IOL-PC space was significantly correlated with axial length and IOL design and material.

The Relationship between the Adhesion Characteristics of Acrylic Intraocular Lens Materials and Posterior Capsule Opacification

2007 ◽  
Vol 39 (5) ◽  
pp. 276-281 ◽  
Author(s):  
Yasuhiro Katayama ◽  
Shinichiro Kobayakawa ◽  
Hideo Yanagawa ◽  
Tetsuo Tochikubo
Keyword(s):  
Intraocular Lens ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
The Relationship

scholarly journals Causes of sub-optimal cataract surgical outcomes in patients presenting to a teaching hospital

1970 ◽  
Vol 4 (1) ◽  
pp. 73-79
Author(s):  
Kshitiz Kumar ◽  
VP Gupta ◽  
U Dhaliwal
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Visual Outcome ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Categorical Variables ◽  
Refractive Errors ◽  
Continuous Variables ◽  
Cross Sectional ◽  
Good Outcome

Introduction: Surgical treatment for cataract blindness in India is increasing apace; however, sight restoration after surgery is not always satisfactory. Objective: To evaluate visual outcome after cataract surgery and causes of sub-optimal outcome, if any. Materials and methods: A cross-sectional study including the patients who had undergone cataract surgery six months to ten years ago was carried out. The variables studied were visual acuity, demographic and surgical factors and ocular findings. The causes of subnormal outcome was categorized into cataract surgery-related or unrelated. Statistical analysis: SPSS-17 was used; the Chi-square test was used to determine the association between good outcome and categorical variables; the t-test was used for continuous variables. Multivariate analysis using step-wise logistic regression was done. Results: Among 644 patients (644 eyes), good outcome (presenting visual acuity 6/18 or better) after surgery was seen in 266 (41.3 %) eyes. Good outcome was significantly related to urban residence, presence of an intraocular lens and absence of ocular co-morbidities or posterior capsule opacification. Borderline and poor outcomes were mainly due to surgeryrelated causes; treatable causes included uncorrected refractive errors, and posterior capsule opacification. Intra-operative complications resulting in a pulled-up pupil were frequent. Conclusions: Surgical factors are responsible most often for sub-optimal visual outcome; some, like induced astigmatism and vitreous loss, can be modified with training; actively encouraging follow-up visits can allow treatment of residual refractive errors and capsular opacification. DOI: http://dx.doi.org/10.3126/nepjoph.v4i1.5855 NEPJOPH 2012; 4(1): 73-79

scholarly journals Influence of Intraocular Lens Material and Eye Axial Length on Posterior Capsule Opacification Dynamic Rate and Frequency

2016 ◽  
Vol 13 (4) ◽  
pp. 247-251
Author(s):  
G. V. Sorokoletov ◽  
V. K. Zuev ◽  
J. R. Tumanjan ◽  
F. M. Gerlyak ◽  
V. N. Veshhikova ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Axial Length ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Lens Material

Trial of Square and Round Edge Intraocular Lens on Preventing Posterior Capsule Opacification

2012 ◽  
Vol 22 (2) ◽  
pp. 92-93
Author(s):  
Prakash Kumar Chowdhury
Keyword(s):  
Intraocular Lens ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Medicine Today

Medicine Today 2010 Volume 22 Number 02 Page 92-93 DOI: http://dx.doi.org/10.3329/medtoday.v22i2.12442

scholarly journals Visual Quality Assessment of Posterior Capsule Opacification Using Optical Quality Analysis System (OQAS)

2017 ◽  
Vol 2017 ◽  
pp. 1-4 ◽  
Author(s):  
Hui Zhang ◽  
Jing Wang
Keyword(s):  
Visual Acuity ◽  
Quality Assessment ◽  
Case Series ◽  
Optical Quality ◽  
Posterior Capsule Opacification ◽  
Assessment System ◽  
Quality Analysis ◽  
Posterior Capsule ◽  
Case Series Study ◽  
Visual Disturbances

Objective. To evaluate intraocular scattering in eyes with posterior capsule opacification by means of an objective scatter index (OSI) obtained from double-pass images of optical quality assessment system (OQAS TM II) and to determine the indication for laser capsulotomy when patients report visual disturbances without decreased visual acuity. Methods. In this prospective, observational, and nonconsecutive case series study, a total of 32 eyes of 29 patients are diagnosed with posterior capsule opacification after age-associated cataract were analyzed. Patient examination included age, the period after cataract surgery, logMAR best corrected visual acuity (BCVA), and OSI. Results. We found a significant decrease in the BCVA and increase in the OSI with the development of posterior capsule opacification. The decrease of BCVA was statistically correlated with the increase of OSI (r=0.812, P<0.01). In patients who reported visual disturbances without decreased visual acuity, OSI decreased to <1.3 and subjective symptoms were resolved in all cases although there was no significant improvement in visual acuity after laser capsulotomy. Conclusions. The results of our study showed that OSI is also a useful parameter for objectively evaluating posterior capsule opacification. OSI may help predict laser capsulotomy in patients who report visual disturbances without decreased visual acuity.

Relationship of AcrySof acrylic and PhacoFlex silicone intraocular lenses to visual acuity and posterior capsule opacification

2002 ◽  
Vol 28 (4) ◽  
pp. 662-669 ◽  
Author(s):  
Michael T. Halpern ◽  
Dave Covert ◽  
Carmelina Battista ◽  
Arthur J. Weinstein ◽  
Ralph D. Levinson ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Posterior Capsule Opacification ◽  
Intraocular Lenses ◽  
Posterior Capsule ◽  
Relationship Of

Effect of a silicone intraocular lens with a sharp posterior optic edge on posterior capsule opacification

2004 ◽  
Vol 30 (8) ◽  
pp. 1661-1667 ◽  
Author(s):  
Wolf Buehl ◽  
Rupert Menapace ◽  
Stefan Sacu ◽  
Katharina Kriechbaum ◽  
Christina Koeppl ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule

scholarly journals Frequency of Complications Following Cataract Surgery in Diabetic Patients at Tertiary Care Hospital

2022 ◽  
Vol 9 (1) ◽  
pp. 75-81
Author(s):  
Muhammad Bilal ◽  
Shafqat Ali Shah ◽  
Marina Murad ◽  
Saad Ali ◽  
Ammad Ali ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Tertiary Care ◽  
Case Series ◽  
Female Gender ◽  
Posterior Capsule Opacification ◽  
Posterior Capsule ◽  
Diabetic Patients ◽  
Care Hospital ◽  
Case Series Study

OBJECTIVES: To determine the frequency of complications following cataract surgery in diabetic patients admitted in the ophthalmology unit. METHODOLOGY: A prospective descriptive interventional case series study was conducted after approval of the ethical committee, from June 2017-June 2020 at the Ophthalmology department MTI-MMC. A total of 129 patients from either gender were enrolled in study. All the study patients went through detailed history and complete ocular examination. After necessary investigations, surgical procedure was carried out. Results were analyzed through the SPSS-24 version. RESULTS: Out of the total 129 eyes of the diabetic patients, fifty-nine (45.7%) were males and seventy (54.3%) were females with a ratio of 1:1.2. Uveitis leads the chart in complications found in twenty (15.50%) eyes while PODR being the least common found in only ten (7.75%) eyes. Worse visual acuity was observed in fourteen (10.85%) eyes. Striate keratopathy and posterior capsule opacification were found in sixteen (12.40%) and fifteen (11.62%) eyes respectively. Among the patients, 15.7% were having more than one complication during follow-up visits and eighty-eight (68.2%) eyes were found to have none complication. The age group 51-60 years observed frequent complications as compared to other groups. Similarly female gender (38.57%) has frequent complications as compared to males (2.7%). CONCLUSION: The study concludes Uveitis as the most common complication observed in 15.50% 0f the eyes while worse visual acuity (10.85%) and progression of diabetic retinopathy (7.75%) being the least common. Striate keratopathy was found in 12.40% while posterior capsule opacification in 11.62% of the eyes.

scholarly journals Posterior capsular calcification without opacification of intraocular lens

2016 ◽  
Vol 8 (1) ◽  
pp. 91-94
Author(s):  
Rajesh S Joshi
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Posterior Capsule ◽  
Posterior Capsular Opacification ◽  
Slit Lamp ◽  
Peripheral Part ◽  
Postoperative Visual Acuity ◽  
The Third ◽  
Early Occurrence

Background: Posterior capsular clarity is important for long-term visual gain. Postoperative visual acuity could be reduced due to posterior capsular or intraocular lens opacification, which occur months or years after cataract surgery. We report early occurrence of posterior capsular calcification without opacification of intraocular lens. Case: We report the case of a 78-year-old male who had undergone phacoemulsification with implantation of hydrophilic intraocular lens (IOL) in the left eye for cataract. The patient was non-diabetic, and the surgical procedure was uneventful. On the third postoperative day, fine granular deposits were found on the mid-peripheral part of the posterior capsule. No deposits were found on IOL. The patient presented with diminished vision four months after surgery. Slit-lamp examination revealed distinct areas of calcification with an early opacification of the posterior capsule and no IOL calcification. Neodymium doped: YAG capsulotomy was done to clear posterior capsular opacification, and the patient regained visual acuity of 20/20. To the best of our knowledge, this report is the first to investigate posterior capsular calcification without opacification of IOL in a patient without any known etiological factors. Conclusion: This case is reported to stimulate future study on the use of BSS plus and the development of posterior capsular or IOL calcification. Nepal J Ophthalmol 2016; 8(15): 91-94

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