Application of 25 MHz B-Scan Ultrasonography to Determine the Integrity of the Posterior Capsule in Posterior Polar Cataract

Guo, Yang; Lu, Chengzhe; Wu, Bin; Gao, Jianmin; Li, Jun; Yuan, Xiaoyong; Tang, Xin

doi:10.1155/2018/9635289

Cited by 7 publications

(5 citation statements)

References 19 publications

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“…11 In addition, preoperative 25 MHz ultrasonography may help to detect pre-existing PC dehiscence in cases with posterior polar cataracts. 18 Recently, using the new AS-OCT (CASIA2), Pujari et al classified the deficient morphology of the PC in posterior polar cataracts into 3 categories: conical, moth-eaten, and ectatic, which help to manage cataract surgery. 19 Recently, Titiyal et al used iOCT to assess real-time PC integrity of posterior polar cataracts and proved that it characterized high-risk morphological features, which were consistent with the deficient morphology detected by AS-OCT in their previous report.…”

Section: Discussionmentioning

confidence: 99%

Intraoperative OCT for the assessment of posterior capsular integrity in pediatric cataract surgery

Chen

Lin²,

Zhu³

et al. 2022

J Cataract Refract Surg

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Section: Discussionmentioning

confidence: 99%

Intraoperative OCT for the assessment of posterior capsular integrity in pediatric cataract surgery

Chen

Lin²,

Zhu³

et al. 2022

J Cataract Refract Surg

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“…Kumar and colleagues concluded that phacoemulsification in eyes with larger size of polar opacity has significant risk of posterior capsule rupture. Guo and colleagues [15] were the first to report the application of 25MHz B-Scan ultrasonography (MHzB) to distinguish between the integrity and nonintegrity (dehiscence) of the posterior capsule in posterior polar cataract. The authors concluded that the results of the study could be used to select the appropriate treatment and to thereby avoid further complications during posterior polar cataract surgery.…”

Section: Discussionmentioning

confidence: 99%

Untitled

2022

Oftalmol Zh

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Background: It is reasonable and important to optimize the diagnostic and surgical measures for faster visual rehabilitation of patients with posterior capsular cataract (PCC).Purpose: To investigate morphological changes (as assessed by optical coherence tomography (OCT)) in the posterior lens capsule (PLC) in PCC, and to assess their value in the optimization of phacoemulsification for these cataracts. Material and Methods: Of the 1780 eyes (1200 patients) with cataract examined, 512 eyes (28.8%) were diagnosed with PCC. Patients had OCT of the anterior segment (AS-OCT) and phacoemulsification. The morphological changes in the PLC as assessed by OCT, the course of surgical treatment and perioperative complications were reviewed. Results: Three types of morphological changes in the PLC were identified. Type 1 changes were characterized by a clear PLC margin and found in 312 of the 512 eyes (61%). A posterior capsule-sparing phacoemulsification (i.e., with low power, vacuum and irrigation settings) was used only in 28% of eyes. In type 2 changes, the PLC margin was not uniform in reflectivity and thickness, but appeared clear at the retrolenticular space. Type 2 changes were found in 185 of the 512 eyes (36%). We refrained from hydrodissection in 95.1% of cases, used a posterior capsule-sparing phacoemulsification in 97% of cases and posterior capsule polishing in all cases of PLC with type 2 changes. Type 3 changes were characterized by PLC bulging into the retrolenticular space, and were found in 15 eyes (3%). A capsule rupture was observed in 53% of eyes with type 3 changes, although we used a posterior capsule-sparing phacoemulsification with viscodilation in these cases. Conclusion: AS-OCT allows detailed assessment of morphological changes in the PLC and identification of three types of these changes. It is reasonable to take in account these facts when selecting a surgical treatment strategy.

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“…7 Even for determining the integrity of posterior capsule in posterior polar cataract, this can be very efficiently used as shown by Guo et.al. 8…”

Section: Discussionmentioning

confidence: 99%

“…7 Even for determining the integrity of posterior capsule in posterior polar cataract, this can be very efficiently used as shown by Guo et.al. 8 In a study done by Sandinha et.al. on 58 patients to assess the accuracy of B-scan USG for acute fundus obscuring vitreous haemorrhage (FOVH) they found that B-scan U/S scan was highly sensitive in identifying the pathology in acute FOVH.…”

Section: Fig 1: Age Distribution Of Study Participants (N=84)mentioning

confidence: 98%

Diagnostic accuracy of B scan ultrasonography for posterior segment eye disorders in a tertiary care setting in Eastern India

Chaudhury

Parida

Panigrahi

2020

Preprint

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Introduction: Ophthalmic ultrasound (USG) produces real time high resolution images of the eye and orbit. It can categorize and predict the location of pathology in the posterior chamber of eye very well. It is useful even in pre-operative evaluation and diagnosing posterior segment eye disorders. However, the diagnostic accuracy has usually not being studied thoroughly, with special emphasis to its probability of predicting posterior-segment eye disorders using B-scan USG. Objectives: To find out the prevalence and pattern of posterior segment disorders using B-scan ultrasonography, and to find its diagnostic accuracy. Materials and Methods: The study was prospective in nature and conducted in the department of radiodiagnosis and ophthalmology of a tertiary care center of Eastern India. Patients referred to the radiology department for ruling out intra-ocular pathology using B-scan ophthalmic ultrasound were included in the study, irrespective of any age and gender. Data were captured on an excel sheet and analyzed using Stata 12.1 SE. Results: The mean age of 84 study participants was 37.4 ± 19.5 years, with maximum in between 40-50 years. Males were more (72.6%). 50% presented with low vision, and most commonly associated with cataract (45%). Prevalance of posterior segment eye disorders was 13.1%. Sensitivity and negative predictive values were 100%. Post-test probability was 95.5%. Accuracy was however very less (39.3%). Conclusion: Using B-scan ultrasonography for pre-operative assessment and confirmation of diagnosis increases the probability of detecting presence or absence of posterior segment pathology. Absence of posterior segment disorder using this is also very helpful in ruling out disease entirely. It also a very high sensitivity and hence can be used even in rural health centers.

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Application of 25 MHz B-Scan Ultrasonography to Determine the Integrity of the Posterior Capsule in Posterior Polar Cataract

Cited by 7 publications

References 19 publications

Intraoperative OCT for the assessment of posterior capsular integrity in pediatric cataract surgery

Intraoperative OCT for the assessment of posterior capsular integrity in pediatric cataract surgery

Untitled

Diagnostic accuracy of B scan ultrasonography for posterior segment eye disorders in a tertiary care setting in Eastern India

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