scholarly journals Ultrabiomicroscopy Anterior Segment Evaluation of Ocular Contusive Trauma Caused by Pressurized Bottled Drink Caps: A Case Report

2018 ◽  
Vol 9 (2) ◽  
pp. 365-368
Author(s):  
Raffaele Antonio Esposito ◽  
Alessandra Rosati ◽  
Giuseppe Mannino ◽  
Gianluca Scuderi
Keyword(s):  
Emergency Department ◽  
Visual Acuity ◽  
Case Report ◽  
Anterior Segment ◽  
Endothelial Damage ◽  
Sparkling Wine ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Wine Bottle

We report the case of a patient presented to the emergency department because of a contusive trauma from a pressurized bottled drink cap. During the visit, the patient indicated that he had been hit in his left eye by a cork while he was opening a sparkling wine bottle. He underwent a total ophthalmology examination. He had an important reduction of visual acuity, corneal swelling, Descemet’s folds, and hyphema. Therefore, we decided to perform ultrabiomicroscopy (UBM) of the anterior segment to study the endothelial damage and Descemet’s membrane. UBM images confirmed the direct biomicroscopy, highlighting the damaged location.

scholarly journals Corneal pachymetry by AS-OCT after Descemet’s membrane endothelial keratoplasty

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Friso G. Heslinga ◽  
Ruben T. Lucassen ◽  
Myrthe A. van den Berg ◽  
Luuk van der Hoek ◽  
Josien P. W. Pluim ◽  
...  
Keyword(s):  
Deep Learning ◽  
Endothelial Function ◽  
Corneal Thickness ◽  
Anterior Segment ◽  
Anatomical Landmarks ◽  
Endothelial Keratoplasty ◽  
Descemet’S Membrane Endothelial Keratoplasty ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Thickness Measurements

AbstractCorneal thickness (pachymetry) maps can be used to monitor restoration of corneal endothelial function, for example after Descemet’s membrane endothelial keratoplasty (DMEK). Automated delineation of the corneal interfaces in anterior segment optical coherence tomography (AS-OCT) can be challenging for corneas that are irregularly shaped due to pathology, or as a consequence of surgery, leading to incorrect thickness measurements. In this research, deep learning is used to automatically delineate the corneal interfaces and measure corneal thickness with high accuracy in post-DMEK AS-OCT B-scans. Three different deep learning strategies were developed based on 960 B-scans from 50 patients. On an independent test set of 320 B-scans, corneal thickness could be measured with an error of 13.98 to 15.50 μm for the central 9 mm range, which is less than 3% of the average corneal thickness. The accurate thickness measurements were used to construct detailed pachymetry maps. Moreover, follow-up scans could be registered based on anatomical landmarks to obtain differential pachymetry maps. These maps may enable a more comprehensive understanding of the restoration of the endothelial function after DMEK, where thickness often varies throughout different regions of the cornea, and subsequently contribute to a standardized postoperative regime.

scholarly journals Efficacy of Burst Mode Torsional Phacoemulsification in Age-Related Cataract

2020 ◽  
Vol 15 (1) ◽  
pp. 94-97
Author(s):  
Md Abdullah Al Masum ◽  
Md Kamrul Hasan Khan ◽  
Zulfikar Hasan ◽  
Natasha Kajmina
Keyword(s):  
Visual Acuity ◽  
Visual Outcome ◽  
Posterior Capsule ◽  
Burst Mode ◽  
Corrected Visual Acuity ◽  
Age Related ◽  
Corneal Wound ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Best Corrected Visual Acuity

Introduction: Torsional ultrasound energy and burst mode interrupted energy delivery system are recent advancementsin the technique of phacoemulsification surgery. It has been reported that both these advancementshelpto reduce corneal wound burn and thermal induced endothelial cell loss and thereby helps to achieve excellent early postoperative visual outcome Objectives: To evaluate the efficacy of burst mode torsional phacoemulsification surgery in age-related cataract. Materials and Methods: Prospective observational study of 120 cases that underwent phacoemulsificationcataract surgery in which torsional energy was used in burst mode. Phacoemulsification was performed by “vertical –chop” technique. Intraoperatively corneal wound burn, Descemet’s membrane detachment, posterior capsule ruptureetc.were evaluated. Postoperatively corneal oedema, best corrected visual acuity, cystoid macular oedema were evaluated. Postoperatively eyes were examined at day 1, 1 week, 6 weeks and 3 months. Results: Mean age of the patients was 57.28± 8.20 years. Most of the patients 81(67.5%) had nuclear sclerosis grade-II cataract.Intraoperatively, moderate wound burn occurred in 02(1.6%) eyes, localized Descemet’s membrane detachmentin 03(2.5%) eyes and posterior capsule rupture occurred in 03(2.5%) cases. Postoperatively, moderate and severe corneal edema was found in 06(5.0%) and 04(3.3%) eyes respectively at day 1. At the end of 3 months follow-up, 114(95%) eyes maintained a best corrected visual acuity of ≥ 6/18, of which 109(90.8%) eyes achieved ≥ 6/9. Conclusion: Burst mode torsional phacoemulsfication is a very effective and advanced technique of cataract surgery. Intraoperative complications are very less and visual outcome is excellent. Journal of Armed Forces Medical College Bangladesh Vol.15 (1) 2019: 94-97

scholarly journals The role of Descemet’s membrane in the pathogeny of corneal edema following anterior segment surgery

2014 ◽  
Vol 73 (5) ◽  
Author(s):  
Karine Feitosa Ximenes ◽  
Jailton Vieira Silva ◽  
Karla Feitosa Ximenes Vasconcelos ◽  
Fernando Queiroz Monte
Keyword(s):  
Anterior Segment ◽  
Corneal Edema ◽  
Descemet's Membrane ◽  
Descemet’S Membrane ◽  
Anterior Segment Surgery

scholarly journals Case Report of Myopia Correction by ReLEx SMILE in a Patient with Superficial Corneal Opacity

2020 ◽  
Vol 17 (2) ◽  
pp. 295-299
Author(s):  
N. V. Maychuk ◽  
I. A. Mushkova ◽  
A. M. Mayorova ◽  
A. A. Shpak
Keyword(s):  
Visual Acuity ◽  
Case Report ◽  
Anterior Segment ◽  
Corneal Opacity ◽  
Optical Center ◽  
Interface Zone ◽  
Uncorrected Visual Acuity ◽  
Corneal Opacities ◽  
Different Depths ◽  
The Right

Introduction. Reduced corneal transparency leads to dissipation of energy of the femtosecond laser (FSL), which may complicate the formation of the intrastromal incision and limits the use of FSL in eyes with corneal opacities and scars. The purpose of this work is to demonstrate the possibility of successful ReLEx SMILE in a patient with superficial corneal opacity located in the paracentral zone. Case report. Patient R., 29 years old, complained of decreased vision in both eyes since childhood. Visual acuity OD = 0.1 sph –2.75D = 1.0; OS = 0.1 sph –3.50 D cyl –0.75D ax 165° = 1.0. Biomicroscopy of the right eye visualized a superficial semi-transparent corneal opacity of 5 x 3 mm located at 5.30–6 hours at a distance of 1.3 mm from the optical center. According to the anterior segment optical coherence tomography (AS-OCT) the depth of the opacity was 73–78 microns and was limited by the Bowman’s membrane. ReLEx SMILE for myopia correction was performed on both eyes with 6.7 mm lenticule diameter at a depth of 120 µm, which covered the opacity area by 1.1 mm. The surgery was standard and uncomplicated. Seven days postoperatively the patient did not complain. Uncorrected visual acuity (UCVA) was 1.0 for both eyes (and binocularly it was 1.2). According to the AS-OCT data, a hyperreflective line of the interface zone was visualized on the right eye at the depth of 141–147 µm; the opacified superficial corneal layers were detected in the lower paracental zone over the interface line. In one month after the surgery the visual acuity did not change: UCVA = 1.0 in both eyes (binocularly 1.2). Conclusion. ReLEx SMILE technology can be considered as one of the options for myopia correction in patients with superficial corneal opacity located in the paracental zone. More observations are required to evaluate the effectiveness of this technology on corneas with paracentral opacities different in sizes and located at different depths.

scholarly journals Evaluation of Descemet’s Membrane Detachment Using Anterior Segment Optical Coherence Tomography

2014 ◽  
Vol 44 (5) ◽  
pp. 407-409
Author(s):  
Halil Hüseyin Çağatay ◽  
Metin Ekinci ◽  
Yaran Koban ◽  
Hüseyin Çelik ◽  
Mehmet Ersin Oba
Keyword(s):  
Optical Coherence Tomography ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Descemet’S Membrane Detachment ◽  
Descemet's Membrane ◽  
Descemet’S Membrane

scholarly journals Wound Integrity of 2.0 mm Transconjunctival Single-Plane Sclerocorneal Incision: A Comparison between a Motorized Injector with/without Pause Time and a Manual Injector

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Hisanori Imai ◽  
Ayaka Fujii ◽  
Emiko Tani ◽  
Atsushi Azumi
Keyword(s):  
Anterior Segment ◽  
Pause Time ◽  
Intraocular Lens Implantation ◽  
Single Plane ◽  
Incision Size ◽  
Lens Implantation ◽  
Descemet's Membrane ◽  
Group A ◽  
Descemet’S Membrane ◽  
Group B

Purpose. To compare the final incision size and wound structure after the intraocular lens implantation from 2.0 mm transconjunctival single-plane sclerocorneal incision (TSSI) between the use of a motorized injector at first speed and the use of a manual injector.Methods. Patients were divided into three groups as follows: Group A, a manual injector, Group B, a motorized injector with 0.5 s pause time, and Group C, a motorized injector without pause time. The change in incision size and anterior segment optical coherence tomography findings of the wound structure were analyzed.Results. 110 eyes were enrolled (Group A: 40, Group B: 30, and Group C: 40). The averaged change in incision size (mm) was 0.08, 0.01, and 0.03 in Groups A, B, and C, respectively (p<0.001). The incision enlargement in Group A was statistically larger compared with other groups (p<0.01). Descemet’s membrane detachments were seen in 26, 9, and 27 eyes one day after the surgery in Groups A, B, and C, respectively (p=0.001). The rate of Descemet’s membrane detachment in Group B was significantly lower than other groups (p<0.01).Conclusions. The use of a motorized injector by fastest setting with 0.5 s pause time is the best for less wound damage in 2.0 mm TSSI.

Sign in / Sign up

Export Citation Format

Share Document