Measurement of early changes in anterior chamber morphology after cataract extraction measured by anterior segment optical coherence tomography

Kasai, Kozue; Takahashi, Genichiro; Kumegawa, Koichi; Doğru, Murat

doi:10.1007/s00417-015-3135-7

Cited by 12 publications

(10 citation statements)

References 21 publications

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“…However, the degree of angle widening in narrow-angle eyes was not as much as that in open-angle eyes, suggesting that factors other than the lens influence the angle closure [25] . But there were several limitations and defects in the gonioscopy, ultrasound biomicroscopy (UBM) and even AS-OCT which they used to examine the anterior chamber.…”

Section: Discussionmentioning

confidence: 85%

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

Zheng

et al. 2020

Preprint

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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.

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Section: Discussionmentioning

confidence: 85%

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

Zheng

et al. 2020

Preprint

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“…as that in open-angle eyes, suggesting that factors other than the lens influence the angle closure [25] .…”

Section: Discussionmentioning

confidence: 92%

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

Zheng

et al. 2019

Preprint

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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.

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“…Kasai et al (22) found a significant change in the AQD and in the TIA using segment optical coherence tomography in both narrow angles and open angle eyes after cataract surgery; however, narrow angle eyes showed greater increase in the AQD compared to open angle eyes. Despite not including eyes with a narrow angle, we found an increase in TIA by 7.3 at postoperative month 2.…”

Section: Discussionmentioning

confidence: 99%

Morphologic Changes in the Anterior Segment using Ultrasound Biomicroscopy after Cataract Surgery and Intraocular Lens Implantation

Unsal¹,

Eltutar²,

Müftüoğlu³

2016

European Journal of Ophthalmology

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Measurement of early changes in anterior chamber morphology after cataract extraction measured by anterior segment optical coherence tomography

Abstract: Cataract surgery increases ACD and all angle parameters early after the surgery. However, the degree of angle widening in narrow-angle eyes was not as much as that in open-angle eyes, suggesting that factors other than the lens influence the angle closure.

Cited by 12 publications

References 21 publications

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

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

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

Morphologic Changes in the Anterior Segment using Ultrasound Biomicroscopy after Cataract Surgery and Intraocular Lens Implantation

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