scholarly journals Anterior Chamber Angle Evaluation following Phakic Posterior Chamber Collamer Lens with CentraFLOW and Its Correlation with ICL Vault and Intraocular Pressure

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Sherif A. Eissa ◽  
Sherin H. Sadek ◽  
Mohamed W. A. El-Deeb
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Refractive Error ◽  
Case Series ◽  
Mean Value ◽  
Posterior Chamber ◽  
Anterior Chamber Angle ◽  
Implantable Collamer Lens ◽  
Angle Width ◽  
Chamber Angle

Purpose.To assess intraocular pressure (IOP), lens vaulting, and anterior chamber (AC) angle width, following V4C implantable Collamer lens (ICL) procedure for myopic refractive error.Methods.A prospective case series that enrolled 54 eyes of 27 patients that were evaluated before and after V4C phakic posterior chamber Collamer lens implantation for correction of myopic refractive error. Preoperative measurement of IOP was done using Goldmann applanation tonometer and anterior chamber angle width using both Van Herick slit lamp grading system and Scheimpflug tomography imaging (Oculus Pentacam). Follow-up of the aforementioned variables was at 1, 6, and 18 months postoperatively, together with ICL vault measurements.Results.The mean baseline IOP of11.69±2.15showed a statistically significant (P=0.002) increase after 1 month that remained unchanged at 6 and 18 months postoperatively, with mean value of16.07±4.12,16.07±4.10, and16.07±4.13, respectively. Pentacam AC angle width showed a statistically significant decrease at 1(P=0.025), 6(P=0.016), and 18(P=0.010)months postoperatively, with mean preoperative value of40.14±5.49that decreased to25.28±5.33,25.46±5.44, and25.49±5.38, at 1, 6, and 18 months, respectively. Mean ICL vault showed moderate correlation with Pentacam AC angle width at 1(r=-0.435)and 6(r=-0.424)months.Conclusion. V4C ICL implantation resulted in decrease in AC angle width and increase in IOP, within acceptable physiological values at all time points.

Anterior Chamber Angle and Iris-Lens Contact Alteration During Pupillary Dilation

2011 ◽  
Author(s):  
Sara Jouzdani ◽  
Rouzbeh Amini ◽  
Victor H. Barocas
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Aqueous Humor ◽  
Ciliary Body ◽  
Ocular Tissue ◽  
Posterior Chamber ◽  
Pupillary Dilation ◽  
Anterior Chamber Angle ◽  
Aqueous Outflow ◽  
Chamber Angle

The aqueous humor (AH) provides oxygen and nutrients for the avascular ocular tissue specifically, the cornea and lens. AH is secreted by the ciliary body into the posterior chamber, passes through pupil, and drains into the anterior chamber (Fig. 1a). Resistance to the aqueous outflow generates the intraocular pressure (IOP), which is 15–20 mmHg in the normal eyes.

scholarly journals INTRAVITREAL INTRODUCTION OF LUCENTIS AND TRANS-SCLERAL CYCLOPHOTOCOAGULATION IN THE TREATMENT OF NEOVASCULAR GLAUCOMA IN DIABETES MELLITUS

2016 ◽  
Vol 1 (6) ◽  
pp. 122-124
Author(s):  
Ефремова ◽  
Tatyana Efremova ◽  
Балалин ◽  
Sergey Balalin ◽  
Фокин ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Laser Surgery ◽  
Neovascular Glaucoma ◽  
Mean Value ◽  
Anterior Chamber Angle ◽  
Second Stage ◽  
Anti Vegf ◽  
Chamber Angle

We analyzed the results of surgical treatment of 42patients (42eyes) with neovascular glaucoma on the background of proliferative diabetic retinopathy. Intravitreal injections of anti-VEGF-drugs allow to remove newly formed vessels in anterior chamber angle, to reduce intraocular pressure, to avoid complications in patients with neovascular glaucoma and the closed anterior chamber angle of the eye. The second stage of the treatment can be laser surgery. This approach helped to reduce intraocular pressure from 28.9±0.9 to 18.5±0.9mmHg on the background of medical treatment (t>2.0; p<0.05). Visual acuity increased from 0.23±0.07 to 0.44±0.08 (t>2.0; p<0.05).In patients with NVG and closed anterior chamber angle of the eye, having aching glaucoma the use of laser surgery as the first stage of treatment allows to reduce intraocular pressure and to eliminate pain, and to apply intravitreal anti-VEGF-therapy as the second stage. The mean value of IOP decreased from 30.9±1.2 to 20.1±1.1mmHg. During the year period, the second stage (intravitreal introduction of Lucentis) was performed in all patients. As a result, IOP was reduced to 17.5±0.09mmHg. Visual acuity increased from 0.18±0.1 to 0.25±0.07 (p>0.05).

Anterior chamber angle width, central vault and intraocular pressure changes after 12 months of Visian collamer lens implantation

2020 ◽  
Vol 40 (8) ◽  
pp. 2047-2053 ◽  
Author(s):  
José-María Sánchez-González ◽  
Federico Alonso-Aliste ◽  
Gracia Perea-Peña ◽  
Rahul Rachwani-Anil ◽  
Rafael Márquez-de-Aracena-del-Cid ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Anterior Chamber Angle ◽  
Lens Implantation ◽  
Pressure Changes ◽  
Angle Width ◽  
Chamber Angle

scholarly journals The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Zongli Hu ◽  
Chunlin Chen ◽  
Min Sun ◽  
Rongdi Yuan ◽  
Jian Ye
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Linear Correlation ◽  
Control Group ◽  
Anterior Chamber Angle ◽  
Implantable Collamer Lens ◽  
Significant Difference ◽  
The Right ◽  
The Relationship ◽  
Chamber Angle

Purpose. To confirm the relationship between anterior chamber angle (ACA) and intraocular pressure (IOP) early after V4c implantable collamer lens (ICL) implantation. Methods. Patients were assigned to two groups: (1) right eyes (control group) and (2) left eyes (experimental group), with miosis conducted immediately after ICL implantation in the left eyes. IOP, angle opening distance (AOD), trabecular-iris angle (TIA), and pupil diameter (PD) were compared between two groups at postoperative hours 1, 2, and 24. The relationship between ACA, PD, and IOP was analyzed by multiple linear regression. Result. Thirty-six eyes of 18 patients were enrolled. The prevalence of ocular hypertension (OHT, defined as IOP ≥ 21 mmHg) was 61.11% and 16.67% in the right and left eyes, respectively, (χ2 = 7.481, p=0.006). At postoperative hours 1 and 2, IOP and PD were significantly higher p<0.001 in the right eyes, and TIA and AOD were significantly lower p<0.05 in the right eyes than in the left eyes. There was no significant difference at 24 h postoperative in these parameters. After the right eye ICL implantation, the changes of AOD 500 and PD were both linearly correlated with postoperative IOP change (β = −23.707 and 1.731, respectively; p = 0.013 and 0.002, respectively). Conclusion. The ACA was significantly narrowed immediately after V4c ICL implantation. There was a negative linear correlation between ACA and early IOP and a positive linear correlation between PD and early IOP. We recommend the use of intracameral miotics immediately after V4c ICL implantation to reduce the incidence of IOP spikes.

scholarly journals Ocular Biometric Determinants of Anterior Chamber Angle Width in Chinese Americans: The Chinese American Eye Study

2020 ◽  
Vol 220 ◽  
pp. 19-26
Author(s):  
Benjamin Y. Xu ◽  
Jacob Lifton ◽  
Bruce Burkemper ◽  
Xuejuan Jiang ◽  
Anmol A. Pardeshi ◽  
...  
Keyword(s):  
Anterior Chamber ◽  
Chinese American ◽  
Chinese Americans ◽  
Anterior Chamber Angle ◽  
Angle Width ◽  
Chamber Angle

Changes in intraocular pressure and anterior chamber angle after congenital cataract extraction

2019 ◽  
Vol 23 (4) ◽  
pp. e30-e31 ◽  
Author(s):  
Jylan Gouda ◽  
Abdelrahman Elhusseiny ◽  
Reham H. Tomairek ◽  
Dina Elfayoumi ◽  
Ahmed Awadein ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Congenital Cataract ◽  
Cataract Extraction ◽  
Anterior Chamber Angle ◽  
Chamber Angle

Hong’s grading for evaluating anterior chamber angle width

2012 ◽  
Vol 56 (6) ◽  
pp. 551-558 ◽  
Author(s):  
Seok Hwan Kim ◽  
Ja Heon Kang ◽  
Ki Ho Park ◽  
Chul Hong
Keyword(s):  
Anterior Chamber ◽  
Anterior Chamber Angle ◽  
Angle Width ◽  
Chamber Angle

scholarly journals The changes of anatomic and topographic characteristics of eye anterior segment after uncomplicated cataract phacoemulsification

2013 ◽  
Vol 94 (6) ◽  
pp. 853-858
Author(s):  
A A Ryabtseva ◽  
M P Yugaj ◽  
N S Nikitina
Keyword(s):  
Intraocular Pressure ◽  
Anterior Chamber ◽  
Anterior Segment ◽  
Anterior Chamber Depth ◽  
Ultrasound Biomicroscopy ◽  
Anterior Chamber Angle ◽  
Ciliary Processes ◽  
Lens Implantation ◽  
Topographic Characteristics ◽  
Chamber Angle

Aim. To study the changes of anatomic and topographic characteristics of the eye anterior segment after uncomplicated cataract phacoemulsification using corneal incision with intraocular soft lens implantation. Methods. The data of ultrasound biomicroscopy and noncontact tonometry of 58 eyes (56 patients, 32 females, 24 males aged 54 to 78 years) before and after cataract phacoemulsification were analyzed. Paitents with survived ocular trauma, refractive keratoplasty, glaucoma, uveitis, and surgical complications (incomplete capsulorrhexis, posterior capsule rupture, ciliary zonule disinsertion, corneal burn). Apart from the common examinations (visual acuity testing, tonometry, tonography, eye A- and B-ultrasonography, biomicroscopy), all patients underwent eye ultrasound biomicroscopy. Results. Anterior chamber depth increased from 2.73±0.10 to 4.17±0.06 mm (p ≤0.001). Trabecula-iris distance measured at 500 μm from the scleral spur, increased from 0.38±0.02 to 0.47±0.02 mm (p ≤0.001). Anterior chamber angle increased from 28.69±1.87 to 42.73±1.56 degrees (p ≤0.001), the angle between the iris and the sclera increased from 32.78±1.39 to 41.36±0.84 degrees (p ≤0.001), the angle between the sclera and ciliary processes increased from 39.48±1.29 to 45.30±1.16 degrees (p ≤0.001). Intraocular pressure according to the non-contact tonometry data decreased from 18.16±1.29 to 13.55±0.95 mm Hg (p ≤0.001). Conclusion. Anterior chamber depth, trabecula-iris distance, anterior chamber angle, the angle between sclera and iris and the angle between sclera and ciliary processes increased significantly after phacoemulsification with intraocular lens implantation. Intraocular pressure decreased significantly according to the non-contact tonometry data.

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