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.

scholarly journals A Comparative Study between Air Bubble Tamponade Alone versus Air Bubble Tamponade with Internal Fluid Aspiration for Nonplanar Descemet’s Membrane Detachment after Phacoemulsification

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Amr A. Gab-Alla
Keyword(s):  
Central Area ◽  
Time Interval ◽  
Air Bubble ◽  
Central Cornea ◽  
Descemet’S Membrane Detachment ◽  
Internal Fluid ◽  
Descemet's Membrane ◽  
Group A ◽  
Descemet’S Membrane ◽  
Group B

Purpose. To compare the efficacy of air bubble tamponade alone versus air bubble tamponade with internal fluid aspiration for nonplanar Descemet’s membrane detachment after clear corneal incision phacoemulsification. Methods. This study is a prospective, intervention, comparative randomised clinical trial, conducted at a private eye centre, Ismailia, Egypt, from March 2019 to March 2020. It contained 30 eyes of 24 patients who had postphacoemulsification nonplanar Descemet’s membrane detachment involving the periphery and the central area of the cornea (>50% of the cornea) with corneal oedema. The patients were divided into two groups: group A: patients with nonplanar DMD affecting the central cornea treated by air bubble tamponade only and group B: patients with nonplanar DMD affecting the central cornea treated by air bubble tamponade augmented by internal fluid aspiration. Trial Registration: This trial was registered at www.pactr.org and the identification number for the registry is PACTR202006612296119. Results. During the 12-month study period, this study included 30 eyes (24 patients) out of 1356 phaco surgeries with postphacoemulsification nonplanar Descemet’s membrane detachment. Six patients had DMD in both eyes, eight patients had DMD in the right eye, and ten patients had DMD in the left eye. All patients have successful surgeries without complications. The calculated incidence rate for visually significant DMD was 2.2% per year. The mean ± SD time interval from cataract surgery to the primary intervention was 4.2 ± 1.1 days. Descemet’s membrane was attached in 56.25% of patients in group A (9 out of 16 eyes) and 92.6% of patients in group B (13 out of 14 eyes) with a minimum of one-month follow-up. Conclusion. Air descemetopexy combined with the internal fluid aspiration demonstrated to be more efficient than air descemetopexy only to treat Descemet’s membrane detachment following phacoemulsification. It should be tried before planning other major surgeries in patients with severe Descemet’s membrane detachment.

scholarly journals Early versus Delayed Phacoemulsification and Intraocular Lens Implantation for Acute Primary Angle-Closure

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Yun-Hsuan Lin ◽  
Cheng-Hsiu Wu ◽  
Shih-Ming Huang ◽  
Chen Hsieh ◽  
Henry Shen-Lih Chen ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Linear Mixed Model ◽  
Anterior Chamber Depth ◽  
Angle Closure ◽  
Intraocular Lens Implantation ◽  
Acute Primary Angle Closure ◽  
Primary Angle Closure ◽  
Lens Implantation ◽  
Group A ◽  
Group B

Purpose. To compare the effects of early phacoemulsification and intraocular lens implantation (phaco/IOL), delayed phaco/IOL after initial laser peripheral iridotomy (LPI), and conventional LPI alone in patients with acute primary angle-closure (PAC). Methods. Patients with acute PAC were included in the study, and those with secondary glaucoma, prior ocular trauma, or other ocular diseases and those who had undergone ocular surgeries previously were excluded. Patients were categorized into three groups: Group A, which underwent primary phaco/IOL after acute PAC; Group B, which underwent LPI initially after acute PAC, followed by phaco/IOL within 6 months; and Group C, which underwent LPI alone. The IOP control success at 12 months as well as changes in ocular characteristics and the number of antiglaucoma medications used after the treatment among the groups were evaluated. Results. Eighty-one eyes were included in the study: 24 eyes in Group A, 23 eyes in Group B, and 34 eyes in Group C. The linear mixed model analysis demonstrated considerable IOP control in Groups A and B. Visual acuity, anterior chamber depth (ACD), and angle width improved significantly in Groups A and B, but not in Group C. The number of antiglaucoma medications used was significantly higher in Group C than in Groups A and B. Conclusions. Patients who underwent phaco/IOL had better IOP control, improved vision, deeper ACD, and wider angle and required less antiglaucoma medications than those who underwent LPI alone. Performing phaco/IOL weeks to months after the initial LPI did not appear to adversely affect outcomes compared with those of early phaco/IOL.

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 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 Clear Lens Phacoemulsification with Continuous Curvilinear Capsulorhexis and Foldable Intraocular Lens Implantation for the Treatment of a Patient with Bilateral Anterior Lenticonus due to Alport Syndrome

2008 ◽  
Vol 36 (6) ◽  
pp. 1440-1444 ◽  
Author(s):  
YB Liu ◽  
SJ Tan ◽  
ZY Sun ◽  
X Li ◽  
BY Huang ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Alport Syndrome ◽  
Anterior Segment ◽  
Sensorineural Deafness ◽  
Intraocular Lens Implantation ◽  
Therapeutic Choice ◽  
Anterior Lens Capsule ◽  
Quality Of Vision ◽  
Lens Implantation ◽  
Anterior Lenticonus

The case of a 29-year-old man is reported who presented with a gradually progressive, painless decrease in vision over 10 years. Anterior segment examination with a slit lamp revealed anterior lenticonus in both eyes. The patient had previously been diagnosed with bilateral sensorineural deafness, however investigations revealed microscopic haematuria and renal insufficiency that subsequently led to a diagnosis of classical Alport syndrome. Since the patient's quality of vision was severely affected by the bulging anterior lens capsule, surgical treatment was required. Clear lens phacoemulsification with continuous curvilinear capsulorhexis and foldable intraocular lens implantation were performed in each eye 2 days apart. One week after surgery, visual acuity was excellent in both eyes. Clear lens phacoemulsification with continuous curvilinear capsulorhexis and foldable intraocular lens implantation was a safe and effective therapeutic choice in this patient for the management of anterior lenticonus due to Alport syndrome.

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