CHANGES IN THE POSTERIOR VITREOUS AFTER CATARACT SURGERY ASSESSED BY SWEPT-SOURCE OPTICAL COHERENCE TOMOGRAPHY

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.

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Agreement between the Swept-Source Optical Coherence Tomography and the Image-Guided System for Biometry Assessment in Cataract Surgery

Seminars in Ophthalmology ◽

10.1080/08820538.2021.1965172 ◽

2021 ◽

pp. 1-6

Author(s):

Edel Moreno-Páramo ◽

Santiago García-Arroyo ◽

Grecia Y. Ortiz-Ramirez ◽

Manuel Garza-León ◽

Roberto Gonzalez-Salinas

Keyword(s):

Optical Coherence Tomography ◽

Cataract Surgery ◽

Optical Coherence ◽

Swept Source ◽

Image Guided

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Choroidal Structural Changes Assessed with Swept-Source Optical Coherence Tomography after Cataract Surgery in Eyes with Diabetic Retinopathy

Journal of Ophthalmology ◽

10.1155/2020/5839837 ◽

2020 ◽

Vol 2020 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Huiping Yao ◽

Sha Gao ◽

Xiaoqing Liu ◽

Yufeng Zhou ◽

Yu Cheng ◽

...

Keyword(s):

Optical Coherence Tomography ◽

Diabetic Retinopathy ◽

Cataract Surgery ◽

Structural Changes ◽

Control Group ◽

Optical Coherence ◽

Diabetic Cataract ◽

Swept Source ◽

Choroidal Vasculature ◽

The Difference

Objective. To determine the influence of phacoemulsification on choroidal vasculature in patients with diabetic retinopathy (DR) undergoing cataract surgery using swept-source optical coherence tomography (SS-OCT). Methods. The study was conducted in 23 eyes of 23 cataract patients with mild/moderate nonproliferative diabetic retinopathy (NPDR) without diabetic macular edema (DME) and 23 age-matched controls. Choroidal thickness (CT) and choroidal vascularity index (CVI) were measured at baseline and 1 week, 1 month, and 3 months after surgery. Results. The baseline CVI in the DR group was significantly lower than that in the control group ( P = 0.001 ). CVI in DR patients after surgery significantly increased compared with preoperative values (all P < 0.001 for 1 week, 1 month, and 3 months after surgery). Postoperative increase of CVI and CT in the DR group was more than in the control group, and the difference was significant 1 month and 3 months after surgery (all P < 0.05 ). Conclusion. Patients with mild/moderate NPDR have reduced CVI compared with nondiabetic patients at baseline; diabetic cataract surgery tended to induce more increase in CVI and CT as compared with nondiabetic patients. This trial is registered with NCT04499768.

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Macular disease detection with a swept-source optical coherence tomography-based biometry device in patients scheduled for cataract surgery

Journal of Cataract & Refractive Surgery ◽

10.1016/j.jcrs.2016.02.029 ◽

2016 ◽

Vol 42 (4) ◽

pp. 530-536 ◽

Cited By ~ 18

Author(s):

Nino Hirnschall ◽

Christoph Leisser ◽

Stephan Radda ◽

Sophie Maedel ◽

Oliver Findl

Keyword(s):

Optical Coherence Tomography ◽

Cataract Surgery ◽

Disease Detection ◽

Optical Coherence ◽

Macular Disease ◽

Swept Source

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Measurement of crystalline lens tilt in high myopic eyes before cataract surgery using swept-source optical coherence tomography

Eye and Vision ◽

10.1186/s40662-020-00176-5 ◽

2020 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

Qiang Lu ◽

Wenwen He ◽

Dongjin Qian ◽

Yi Lu ◽

Xiangjia Zhu

Keyword(s):

Optical Coherence Tomography ◽

Cataract Surgery ◽

Crystalline Lens ◽

Optical Coherence ◽

Swept Source

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Vascular Density of the Anterior Segment of the Eye Determined by Optical Coherence Tomography Angiography and Slit-Lamp Photography

Ophthalmic Research ◽

10.1159/000506953 ◽

2020 ◽

Vol 63 (6) ◽

pp. 572-579

Author(s):

Nina Teresa Aicher ◽

Katsuya Nagahori ◽

Makoto Inoue ◽

Yuji Itoh ◽

Akito Hirakata

Keyword(s):

Optical Coherence Tomography ◽

Cataract Surgery ◽

Optical Coherence Tomography Angiography ◽

Anterior Segment ◽

Vascular Density ◽

Optical Coherence ◽

Slit Lamp ◽

Swept Source ◽

Vascular Flow ◽

Imagej Software

Objective: To determine the vascular density of the anterior segment (AS) of the eye from optical coherence tomography angiography (OCTA) images and slit-lamp photographs. Methods: A swept-source OCTA (Plex Elite 9000; Carl Zeiss) device modified with a +10-diopter lens was used to record the vasculature of the AS. Twenty eyes, including 4 eyes of 4 healthy subjects and 16 eyes of 12 patients scheduled for cataract surgery or combined vitrectomy and cataract surgery, were studied. The slit-lamp photographs of the AS were acquired concurrently with the AS-OCTA images. The vascular density was measured preoperatively and postoperatively in the nasal, temporal, superior, and inferior quadrants after binarization with ImageJ software. Results: Acceptable AS-OCTA images were obtained of 65% (superior), 80% (nasal), 70% (inferior), and 80% (temporal) of the eyes. The percentage of acceptable images was significantly lower in the superior quadrant among the AS-OCTA images than among the AS photographs (100%; p = 0.004). The vascular density determined by AS-OCTA was higher than that determined in the AS photographs in all quadrants (p = 0.011 to <0.001). The AS-OCTA B-mode images showed that vascular flow was identified mainly between the conjunctiva and sclera but not in the ciliary body. The vascular density increased significantly after cataract surgery in the superior quadrant, which was significantly correlated with the location of the surgical incision (p = 0.03). Conclusion: AS-OCTA can obtain images with higher vascular density of the conjunctiva and sclera than slit-lamp photographs, and AS-OCTA images can show a postoperative increase in vascular density.

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