Observation of anterior chamber volume after cataract surgery with swept-source optical coherence tomography

2018 ◽  
Vol 39 (8) ◽  
pp. 1837-1844
Author(s):  
Minjie Chen ◽  
Hailin Hu ◽  
Wenwen He ◽  
Yi Lu ◽  
Xiangjia Zhu
Keyword(s):  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Anterior Chamber ◽  
Optical Coherence ◽  
Swept Source ◽  
Chamber Volume ◽  
Anterior Chamber Volume

Anterior chamber volume measurements with Visante optical coherence tomography and Pentacam: repeatability and level of agreement

2009 ◽  
Vol 37 (8) ◽  
pp. 772-774 ◽  
Author(s):  
Georgios Labiris ◽  
Maria Gkika ◽  
Andreas Katsanos ◽  
Michael Fanariotis ◽  
Efstratios Alvanos ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Optical Coherence ◽  
Chamber Volume ◽  
Anterior Chamber Volume ◽  
Volume Measurements ◽  
Level Of Agreement

scholarly journals Assessment of anterior chamber configuration changes after phacoemulsification with swept-source optical coherence tomography

2019 ◽  
Author(s):  
Man Hu ◽  
Qian Zheng ◽  
Zhangliang Li ◽  
Pingjun Chang ◽  
Yun-e Zhao
Keyword(s):  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Anterior Chamber ◽  
Anterior Segment ◽  
Anterior Chamber Depth ◽  
Optical Coherence ◽  
Swept Source ◽  
Narrow Angle ◽  
Age Related ◽  
Shallow Anterior Chamber

Abstract Background To assess the changes of anterior chamber angle in patients with shallow anterior chamber and normal anterior chamber after phacoemulsification and intraocular lens implantation (IOL) using anterior segment swept-source optical coherence tomography (AS-SS-OCT). Methods This was a prospective case control study; 60 eyes of 60 patients who underwent cataract surgery. Based on anterior chamber depth (ACD) and gonioscopy findings, the eyes were classified into two groups, shallow anterior chamber group (30 eyes) and normal anterior chamber group (30 eyes). AS-SS-OCT was used to measure ACD and angle parameters angle opening distance (AOD), angle recess area (ARA), trabecular iris space area(TISA), and trabecular iris angle (TIA). Serial changes in each group were measured before and 3 months after phacoemulsification and IOL, and the differences between the two groups were compared. Results All angle parameters including ACD, AOD, ARA, TISA, and TIA in both groups at 3 months after cataract surgery were significantly different from the preoperative values (p<0.01). In addition, we found significant differences of all angle parameters between groups of shallow anterior chamber (SAC) and normal anterior chamber (NAC) (All P< 0.05). Besides, the TISA750 in superior quadrant and anterior chamber volume (ACV) were significantly smaller in the group of SAC than those in the group of NAC (P = 0.041 and 0.002, respectively). Conclusions The parameters of anterior chamber increased significantly in both two groups but not increase to the same extent 3 months after phacoemulsification. Iris thickening may also be one of the narrow angle factors,not just age-related lens thickening.

scholarly journals Evaluation and management of a spontaneous corneal rupture secondary to pellucid marginal degeneration, using swept-source anterior segment optical coherence tomography

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Esther Papamlichael ◽  
Abison Logeswaran ◽  
Vasilios P Papastefanou ◽  
Martin Watson ◽  
Andrew Coombes
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Corneal Perforation ◽  
Swept Source ◽  
Chamber Volume ◽  
Body Sensation ◽  
Anterior Chamber Volume ◽  
Contralateral Eye ◽  
The Right

Abstract We describe a case of bilateral spontaneous corneal perforation secondary to pellucid marginal degeneration and present the associated swept-source anterior segment optical coherence tomography (SS-ASOCT) findings and management principles used. A 47-year-old woman presented with ocular pain, redness, foreign body sensation and clear discharge in the right eye in 2017 and with very similar symptoms in 2019 in the left eye. Clinically she had a corneal perforation at the inferior cornea with associated loss of anterior chamber volume. Corneal topography demonstrated peripheral thinning and steepening in the contralateral eye. ASOCT images revealed full-thickness perforation, iridocorneal touch and iris stranding. The patient was managed with a combination of contact bandaging and corneal gluing. SS-ASOCT is a useful adjunctive tool in the clinical assessment and evaluation of spontaneous corneal perforation. Alongside the clinical evaluation, it can be used to monitor the clinical response.

scholarly journals Evaluation of Anterior Chamber Volume in Cataract Patients with Swept-Source Optical Coherence Tomography

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Wenwen He ◽  
Xiangjia Zhu ◽  
Don Wolff ◽  
Zhennan Zhao ◽  
Xinghuai Sun ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Linear Regression ◽  
Correlation Analysis ◽  
Multiple Linear Regression ◽  
Anterior Chamber ◽  
Influencing Factors ◽  
Swept Source ◽  
Chamber Volume ◽  
Anterior Chamber Volume ◽  
Cataract Patients

Purpose.To evaluate the anterior chamber volume in cataract patients with Swept-Source Optical Coherence Tomography (SS-OCT) and its influencing factors.Methods.Anterior chamber volume of 92 cataract patients was evaluated with SS-OCT in this cross-sectional study. Univariate analyses and multiple linear regression were used to investigate gender, age, operated eye, posterior vitreous detachment, lens opacity grading, and axial length (AXL) related variables capable of influencing the ACV.Results.The average ACV was 139.80 ± 38.21 mm3(range 59.41 to 254.09 mm3). The average ACV was significantly larger in male patients than in female patients (P=0.001). ACV was negatively correlated with age and LOCS III cortical (C) grading of the lens (Pearson’s correlation analysis,r=-0.443,P<0.001, and Spearman’s correlation analysis,ρ=-0.450,P<0.001). ACV was also increased with AXL (Pearson’s correlation analysis,r=0.552,P<0.001). Multiple linear regression showed that, with all of the covariates entered into the model, gender (P=0.002), age (P=0.015), LOCS III C grade (P=0.043), and AXL (P=0.001) were still associated with ACV (F=10.252  P<0.001  R2=0.498).Conclusion.With SS-OCT, we found that, in healthy cataract patients, ACV varied significantly among different subjects. Influencing factors that contribute to reduced ACV were female gender, increased age, LOCS III C grade, and shorter AXL.

scholarly journals Assessment of anterior chamber configuration changes after phacoemulsification with swept-source optical coherence tomography

2020 ◽  
Author(s):  
Man Hu ◽  
Qian Zheng ◽  
Zhangliang Li ◽  
Pingjun Chang ◽  
Yun-e Zhao
Keyword(s):  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Anterior Chamber ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Swept Source ◽  
Narrow Angle ◽  
Significant Difference ◽  
Shallow Anterior Chamber ◽  
Chamber Angle

Abstract Background: To assess the changes of anterior chamber angle in patients with shallow anterior chamber and normal anterior chamber after phacoemulsification and intraocular lens implantation (IOL) using anterior segment swept-source optical coherence tomography (AS-SS-OCT). Methods: This was a prospective case control study; 60 eyes of 60 patients who scheduled for cataract surgery with normal intraocular pressure (IOP). Based on anterior chamber depth (ACD) and gonioscopy findings, the eyes were classified into two groups: shallow anterior chamber group with narrow angle (SAC group, 30 eyes)；and normal anterior chamber group with wide angle (NAC group, 30 eyes). Measurements of ACD, anterior chamber volume (ACV), Iris volume (IV), lens vault (LV) , angle opening distance (AOD), angle recess area (ARA), trabecular iris space area (TISA), and trabecular iris angle (TIA) were conducted in each group before and 3 months after surgery. Differences between the two groups were compared. Results: There was no significant difference in age, axial length (AL), corneal curvature, corneal diameter, IOP and IV between the SAC group and the NAC group before operation, except for the LV (p = 0.000). All angle parameters including ACD, ACV, AOD, ARA, TISA and TIA in both groups at 3 months post-surgery were significantly different from the preoperative values (p<0.01). In addition, there were significant differences in all angle parameters between two groups before and after operation (All P< 0.05). Besides, the TISA750 in superior quadrant, ACD and ACV were significantly smaller in the group of SAC than those in the group of NAC 3 months after operation (P = 0.041, 0.001 and 0.002, respectively). Conclusions: Cataract surgery can deepen anterior chamber and increase the width of anterior chamber angle in Chinese subjects, but the ACD and ACV in patients with shallow anterior chamber and narrow angle have not reached the normal level, presumably because the iris root of SAC group inserted more anteriorly than that of NAC group. Phacoemulsification may not completely eliminate the risk of glaucoma in NAC group of people after surgery.

scholarly journals Evaluation of anterior chamber volume using Pentacam and anterior segment optical coherence tomography among normal subjects

2018 ◽  
Vol 16 (2) ◽  
pp. 86-94
Author(s):  
Vijaya Anandan ◽  
Rekha Srinivasan ◽  
Rashima Asokan ◽  
Ronnie George
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Anterior Segment ◽  
Normal Subjects ◽  
Optical Coherence ◽  
Cross Sectional ◽  
Chamber Volume ◽  
Anterior Chamber Volume ◽  
Volume Measurements ◽  
The Mean

Aim: To compare the anterior chamber volume measurements obtained with Pentacam and derived from anterior segment optical coherence tomography. Design: Cross-sectional study. Methods: We included normal subjects who underwent a comprehensive eye examination including refraction, keratometry, Goldmann applanation tonometry, gonioscopy, anterior segment optical coherence tomography (AS-OCT) (Carl Zeiss Meditec Inc.; Dublin, CA, USA) and Pentacam (Oculus Inc.; Lynnwood, WA, USA). Fifty scans were selected for Pentacam and 12 images were selected for calculation of anterior chamber volume. Only the right eye was considered for analysis. Results: One-hundred and nineteen eyes of 119 subjects were included for analysis. The mean age of the subjects was 42.58 ± 13.15 years, of which 74 were female and 45 were male. The mean anterior chamber volume measured using AS-OCT was 119.17 ± 26.56 mm3 and with Pentacam was 131.29 ± 34.26 mm3. The comparison of means between the two modalities was statistically significant (t = -8.857, Mean Difference (MD) = 12.11, 95% CI: (4.29, 19.95), p = 0.003). Bland-Altman plot showed poor agreement between the chamber volume measurements obtained by Pentacam and AS-OCT with MD of 12.1 mm3 (95 % CI: 41.4 to -17.1) and intra-class correlation between the two instruments was 0.94 (95% CI: 0.91, 0.96) (p < 0.0001). Conclusion: The anterior chamber volume can be measured using Pentacam as well as AS-OCT since these measurements were reliable. However, these measurements were not interchangeable due to poor levels of agreement.

Impact of Cataract Surgery on Filtering Bleb Morphology Identified Via Swept-source 3-dimensional Anterior Segment Optical Coherence Tomography

2019 ◽  
Vol 28 (5) ◽  
pp. 433-439
Author(s):  
Akiko Narita ◽  
Yuki Morizane ◽  
Tomoe Miyake ◽  
Kae Sugihara ◽  
Tomoko Ishikawa ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Swept Source ◽  
3 Dimensional ◽  
Filtering Bleb

Reproducibility of Anterior Chamber Angle Analyses With the Swept-Source Optical Coherence Tomography in Young, Healthy Caucasians

2014 ◽  
Vol 55 (6) ◽  
pp. 3999 ◽  
Author(s):  
Hellen C. S. Römkens ◽  
Henny J. M. Beckers ◽  
Marc Frusch ◽  
Tos T. J. M. Berendschot ◽  
John de Brabander ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Chamber ◽  
Optical Coherence ◽  
Anterior Chamber Angle ◽  
Swept Source ◽  
Chamber Angle
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