Femtosecond laser-assisted creation of anterior capsulorhexis in anterior capsule fibrosis

2021 ◽  
pp. 75-80
Author(s):  
E.S. Pirogova ◽  
◽  
O.L. Fabrikantov ◽  
S.I. Nikolashin ◽  
◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Key Words ◽  
Laser Energy ◽  
Anterior Capsule ◽  
Capsular Fibrosis ◽  
Group I ◽  
Operative Complications ◽  
Group Ii

Purpose. To optimize the technique for the femtosecond laser-assisted anterior capsulorhexis creation in anterior capsular fibrosis. Material and methods. All patients were divided into two groups: group I included 12 patients with central and peripheral anterior capsule fibrosis who underwent anterior circular capsulorhexis creation using femtosecond laser LensX (Alcon, USA) with laser energy 10 and 15 μJ. Group II included 11 patients with central and peripheral anterior capsule fibrosis who underwent manual capsulorhexis. Results. In group II the operative complications occurred in 3 cases (27.3%), group I was uneventful. Conclusion. Femtosecond laser-assisted anterior capsulorhexis creation in patients with anterior capsule fibrosis allowed reducing the number of operative complications by 27% in comparison with manual capsulorhexis creation. It is advisable to use 10 μJ power to create the anterior capsulorhexis in the area of unaffected and slightly fibrotic anterior capsule cutting the fibrotic part of the anterior capsule by collet scissors. Key words: anterior capsolorhexis, fibrosis, anterior capsule.

scholarly journals Comparative Analysis of the Intrastromal MyoRing Implantation performed with the Femtosecond Laser

2017 ◽  
Vol 6 (2) ◽  
pp. 49-57
Author(s):  
Maksim V Sinitsyn ◽  
Nadezhda A Pozdeyeva ◽  
Nikolai P Pashtayev
Keyword(s):  
Comparative Analysis ◽  
Femtosecond Laser ◽  
Corneal Thickness ◽  
Functional Results ◽  
Standard Group ◽  
Pronounced Increase ◽  
Group I ◽  
Biomechanical Parameters ◽  
Group Ii

ABSTRACT Purpose To comparatively analyze the intrastromal MyoRing implantation with femtosecond laser (FL) using the standard and optimized technologies in the experiment and based on the long-term clinical-functional results of the patients with keratoconus (KC) at stages II and III. Materials and methods The experimental work was performed on 24 eyes of rabbits. All eyes were divided into six groups according to the method of operation. In the clinical part of the research, the surgical treatment of 70 patients (76 eyes) with KC at stages II and III was done. Depending on the technology of the operation, all patients were divided into two groups. Group I consisted of 29 patients (32 eyes) with KC, in which MyoRing implantation was performed according to the standard, group II consisted of 31 patients (32 eyes) with KC, in which MyoRing implantation was performed according to the optimized technology. Results Higher voltage was required for stretching samples of the second group in comparison with the third and the sixth group in comparison with the fifth group. In group I, during the period of 6 to 36 months the surgery reverses keratometry, corneal thickness above the MyoRing, and posterior corneal elevation. In group II, 12 months after surgery the clinical and functional parameters remained stable throughout the period of observation. Conclusion Greater reduction in corneal biomechanical stability was observed after formation of the intrastromal pocket in comparison with an intrastromal tunnel; a more pronounced increase in the strength characteristics of the cornea was observed after implantation of the ring in intrastromal pocket, compared with implantation intracorneal segments in intrastromal tunnel, and with increasing depth of intrastromal ring implantation. Application of optimized MyoRing implantation technology compared with standard allows more biomechanical parameters of the cornea to improve and reduce the risk of the ring protrusion. How to cite this article Sinitsyn MV, Pozdeyeva NA, Pashtayev NP. Comparative Analysis of the Intrastromal MyoRing Implantation performed with the Femtosecond Laser. Int J Kerat Ect Cor Dis 2017;6(2):49-57.

Genetics of Glossina morsitans morsitans (Diptera: Glossinidae). XIII. Mapping the locus for tetrazolium oxidase in linkage group I and refinement of the linkage group II map

Genome ◽  
1988 ◽  
Vol 30 (6) ◽  
pp. 885-887 ◽  
Author(s):  
R. H. Gooding ◽  
B. M. Rolseth ◽  
S. A. Tarimo
Keyword(s):  
Linkage Group ◽  
Key Words ◽  
Aldehyde Oxidase ◽  
Glossina Morsitans Morsitans ◽  
Linkage Maps ◽  
Glossina Morsitans ◽  
Eye Color ◽  
Group I ◽  
Group Ii

The locus for tetrazolium oxidase, To, is mapped at 4.3 ± 1.3 recombination units from the locus for arginine phosphokinase, Apk, in linkage group I, and the distance between the eye color locus, sal, and Apk is confirmed to be about 39.5 ± 3.2 recombination units. In linkage group II the loci for aldehyde oxidase, Ao, and for two esterases are arranged in the order Ao Est-1 Est-2 with 3.5 ± 1.2 recombination units separating Ao and Est-1 and 8.3 ± 1.8 recombination units separating Est-1 and Est-2.Key words: Glossina morsitans, tetrazolium oxidase, aldehyde oxidase, esterases, linkage maps.

scholarly journals Technique for Optimizing Morganian Cataract Phacoemulsification

2018 ◽  
Vol 15 (2S) ◽  
pp. 160-165
Author(s):  
O. L. Fabrikantov ◽  
E. S. Pirogova ◽  
S. I. Nikolashin
Keyword(s):  
Surgical Intervention ◽  
Sagittal Plane ◽  
Intraoperative Complications ◽  
Standard Technique ◽  
Posterior Capsule ◽  
Anterior Capsule ◽  
Group I ◽  
Group Ii ◽  
Improved Technology ◽  
Capsular Bag

Purpose: to optimize the technique of hypermature Morganian cataract phacoemulsification.Patients and methods. 18 patients (18 eyes) with hypermature Morganian cataract were examined. Group I included 8 patients who underwent surgical intervention according to the improved technology using the iridocapsular retractors. Group II included the retrospective results of phacoemulsification with IOL implantation performed according to a standard technique in 10 patients. The optimizing surgical technique in patients of group I consisted in the consecutive usage of four iridocapsular retractors: when creating a capsulorhexis — to stabilize the capsular bag during the circular rupture of the anterior capsule; during the nucleus phacoemulsification — to stabilize the complex: capsular bag, nucleus, capsular ring — in the sagittal plane and additional (together with the capsular ring) support of the capsular bag fornices.Results. No complications were noted in patients of group I. In patients of group II there were two ruptures of the posterior capsule (20%), two cases of re-implantation of a capsular ring because of the stop of its edge into the fold of the capsular bag fornix, one rupture of the anterior capsulorhexis border without its transition to the posterior capsule. In group I there were no any complications in the postoperative period. In group II we noted two corneal oedemata, Descemet membrane folds, which were jugulated by the conservative treatment on the 4–5th days postoperatively.Conclusion. The optimizing technique of hypermature Morganian cataract phacoemulsification with the use of four iridocapsular retractors and capsular ring allowed reducing the number of intraoperative complications in comparison with the standard technique and making the surgical intervention more effective and safe. 

scholarly journals Comparing endoscopic microdebrider assisted adenoidectomy with curettage procedure

2018 ◽  
Vol 4 (2) ◽  
pp. 559
Author(s):  
C. Ravishakar ◽  
Shambulinga Killera
Keyword(s):  
Blood Loss ◽  
Otitis Media With Effusion ◽  
Randomized Study ◽  
Operating Time ◽  
Waldeyer’S Ring ◽  
Adenoid Tissue ◽  
Group I ◽  
Operative Complications ◽  
The Mean ◽  
Group Ii

<p class="abstract"><strong>Background:</strong> Adenoid is a mass of lymphatic tissue situated posterior to the nasal cavity, in the roof of the nasopharynx, forming a part of the Waldeyer's ring, was initially described in 1868 by Meyer. Adenoidectomy is one of the commonest operations done on children. It is done alone or along with tonsillectomy or with ventilation tube insertion for otitis media with effusion. Objective of the study was to compare the results of endoscopic microdebrider assisted adenoidectomy with that of conventional curettage adenoidectomy.</p><p class="abstract"><strong>Methods:</strong> A prospective randomized study of 60 patients with clinical features of adenoid hypertrophy. These patients were randomly divided into two groups, 30 each using the table of random numbers. Group I, underwent endoscopic microdebrider assisted adenoidectomy and group II underwent adenoidectomy by curettage. All the patients were followed up for a period of 3 months. Parameters such as operating time, blood loss, intra-operative/post-operative complications and residual adenoid tissue were assessed.  </p><p class="abstract"><strong>Results:</strong> In this study mean age of patients in group I (EAA) was 9±0.50 years (range 6–15 years) and group II (CA) was 9.86 ± 2.31 years (range 6-15 years). The mean operating time was 20.79 minutes for the group I (range: 12 to 35 minutes) and 14.42 minutes for group II (range: 10 to 22 minutes, p=0.001). Blood loss was around 31.06 ml (range: 21 to 46 ml) in group I and 22.26 ml (range: 10 to 60 ml) in group II. Adenoidectomy by curette group showed more residual nasopharyngeal adenoid tissue (43.33%) than by endoscopic microdebrider assisted adenoidectomy (20%).</p><p class="abstract"><strong>Conclusions:</strong> Endoscopic microdebrider assisted adenoidectomy is a safe and more effective compared to curettage method, with very minimal chances of injury to the surrounding structures during the procedure.</p>

scholarly journals Ep.Th.654Home Based Pre-Rehabilitation in Hepatic & Pancreatic Oncological Surgery- A Way Forward for Improved Patient Outcome

2021 ◽  
Vol 108 (Supplement_7) ◽  
Author(s):  
Nauman Ahmed ◽  
Rami Obeidallah ◽  
Daren Subar
Keyword(s):  
Hospital Stay ◽  
Length Of Hospital Stay ◽  
Cost Effective ◽  
P Value ◽  
Oncological Surgery ◽  
Operative Outcomes ◽  
Home Based ◽  
Group I ◽  
Operative Complications ◽  
Group Ii

Abstract Aims To ascertain the impact of ‘’Cost effective home-based pre-rehabilitation’’ on post-operative outcomes in patients undergoing major hepatic and pancreatic oncological surgery. Methods In this non-randomized comparative study (2019-2021), we included 36 patients having pancreatic or hepatic malignancy. In group I, patients were signed up for home-based pre-rehabilitation program and dietary modification. Group II; included patients who did not have rehabilitation. The two groups were compared for post-operative outcomes (post-operative complications, length of ITU and hospital stay) Results Mean age was 69.05±9.68 years in group I and 67.50±8.75 years in group II (p-value 0.61). Open approach was used in 02 (11.0%) patients in group I and in 09 (50%) patients in group II (p-value 0.01). More patients in group II needed admission in intensive care unit (ICU); 18 (100%) versus 11 (61.1%) in group II (p-value 0.0003). The group I had shorter length of hospital stay as compared to Group II (p-value 0.0001). There was no significant difference in post-operative complications between the groups. Conclusion Home based pre-rehabilitation, has shown beneficial outcomes in terms of less requirement for ITU admission post operatively, shorter length of hospital stay and cost effective method of pre rehabilitation.

scholarly journals A COMPARATIVE ANALYSIS OF PER AND POST-OPERATIVE COMPLICATIONS IN PATIENTS UNDERGOING EARLY AND DELAYED INTERVAL TONSILLECTOMIES

2021 ◽  
Vol 31 (04) ◽  
pp. 190-194
Author(s):  
Arshad Abbas ◽  
Mazhar Iftikhar ◽  
Ghulam Dastgir Khan ◽  
Muhammad Ilyas ◽  
Muhammad Iqbal ◽  
...  
Keyword(s):  
Hospital Stay ◽  
Single Case ◽  
Needle Aspiration ◽  
Postoperative Hemorrhage ◽  
Peritonsillar Abscess ◽  
Female Ratio ◽  
Group I ◽  
Operative Complications ◽  
Group Ii ◽  
Post Operative Complications

Abstract: Background: Peritonsillar abscess is most prevalent deep neck space infection and treatment is mainly medical and surgical. There are three major surgical procedures namely incision & drainage, interval tonsillectomy and needle aspiration. Aim: To compare per and post-operative complications in patients of PTA undergoing early and delayed interval tonsillectomies in respect of pain, hemorrhage and hospital stay. Material and Methods: It was a randomized control trial study of sixty patients of peritonsillar abscess. Among thirty patients early interval tonsillectomy was performed while other thirty patients underwent delayed interval tonsillectomy. The study was conducted in ENT Department of Lahore General Hospital, Lahore. Results: The age range in both groups was 13-46 years. The male to female ratio was 2.3:1 and 1.3:1 in group I and II respectively. Per-operative hemorrhage in group I, mild in 53.3% patients, moderate in 36.7% and severe in 10.0% patients while in group II, mild in 43.3%, moderate in 40.0% and severe in 16.7% patients. A Single case in group II had secondary hemorrhage. Post-operative pain in group I was mild in 66.7%, moderate in 26.7% and severe in 6.7% patients while in group II, it was mild in 26.7%, moderate in 56.7% and severe in 16.7% patients. The duration of hospital stay less than one week was 76.7% in group I and 13.3% in group II. Conclusion: Early interval tonsillectomy has a lower incidence of postoperative hemorrhage and pain with less hospital stay as compared to delayed interval tonsillectomy.    

scholarly journals Stimulasi Laser sebagai Alternatif untuk Induksi Estrus pada Kambing Bligon (Laser Stimulation as an Alternative for Estrus Induction on Bligon Goats)

2012 ◽  
Vol 34 (1) ◽  
pp. 16 ◽  
Author(s):  
Sigit Bintara
Keyword(s):  
Key Words ◽  
Lower Cost ◽  
Progesterone Level ◽  
Technological Breakthrough ◽  
Laser Stimulation ◽  
Group I ◽  
Significant Difference ◽  
Key Words Laser ◽  
Group Ii ◽  
Livestock Productivity

<p>Reproduction is a very important factor in maintaining livestock productivity. For better reproductivity, estrus induction is one of very important ways to be performed. Estrus induction is usually performed with hormonal method,<br />such as application of PGF2α, but the disadvantage is that it is relatively expensive. For this reason, it is necessary to promote technological breakthrough to lower cost of estrus induction. The aim of this study was to know whether laser<br />stimulation on the points of reproductive acupuncture could be performed for estrus induction on Bligon goats, as it is usually performed with hormonal method. Fourteen female Bligon goats aged 2 years old were randomly divided into two groups, each group consisted of 7 goats. Group I was stimulated with laser and group II was injected with 1.25 mg per head of PGF2α. Laser stimulation was conducted for 10 seconds on each point of acupuncture on day 1, 2, and 3, and was repeated on day 11, 12, and 13. PGF2α injection was performed on day 1 and was repeated on day 11. The observed variables were the percentage of estrus, onset of estrus, estrus duration and progesterone level when estrus occurred after the second estrus induction. The results of the study showed that laser stimulation for estrus induction did not indicate significant difference compared to PGF2α injection, in terms of the percentage of goats undergoing<br />estrus, onset of estrus and the estrus duration. It was concluded that laser stimulation could be used for estrus induction on Bligon goats.</p><p>(Key words: Laser, Estrus induction, Bligon goats)<br /><br /></p>

Comparison of Complications between Manual Small Incision Cataract Surgery and Phacoemulsification

2021 ◽  
Vol 37 (4) ◽  
Author(s):  
Israr Ahmed Bhutto ◽  
Maria Nazish Memon ◽  
Irshad Ali ◽  
Abdul Qadeem Soomro ◽  
Abdul Haleem Mirani
Keyword(s):  
Cataract Surgery ◽  
Senile Cataract ◽  
P Value ◽  
Small Incision Cataract Surgery ◽  
Small Incision ◽  
Group I ◽  
Significant Difference ◽  
Operative Complications ◽  
Group Ii ◽  
Post Operative Complications

Purpose:  To compare per-operative and early post-operative complications between Manual Small Incision cataract surgery and Phacoemulsification in patients with Senile Cataract. Study Design:  Quasi experimental study. Place and Duration of Study:  Al-Ibrahim Eye Hospital Karachi from December 2018 to October 2019. Methods:  Two hundred and seventy patients with senile Cataract were recruited for this study by convenient sampling technique. They were divided equally into two groups. Group I underwent Manual Small Incision Cataract Surgery (MSICS), whereas Group II underwent Phacoemulsification. Per-operative and early post-operative complications were recorded on day 1 in both groups. Data was analyzed using SPSS 24.0. Independent t-test was carried out with P-value of ?0.05 was considered statistically significant. Results:  Mean age group – I was 54.95 ± 11.0 and in Group – II was 57.09 ± 10.59 (p = 0.546). There were 72 (53.3%) males in group – I and 74 (54.8%) in group – II with a non-significant difference (p-value > 0.01). There was significant difference for posterior capsule rupture and striate keratitis between the two groups (p = 0.031 and 0.044 respectively). Rest of the study parameters was not statistically different in the both group. None of the groups had a nucleus drop and vitreous prolapse. No significant difference was seen between the two groups concerning iris trauma (p = 0.56), wound leakage (p = 0.15) and hyphema (p = 0.32). Conclusion:  There is no significant difference between per-operative and early post-operative complications between MSICS and Phacoemulsification in patients with senile cataract except posterior capsular rupture and striate keratopathy which were more common in phacoemulsification group. Key Words:  Cataract, Senile Cataract, Phacoemulsification, Small Incision Cataract Surgery.

Features of performing anterior capsulorexis for the prevention of capsule block after cataract phacoemulsification with implantation of posterior chamber IOL

2021 ◽  
pp. 20-23
Author(s):  
O.I. Orenburkina ◽  
◽  
G.F. Khanova ◽  
A.E. Babushkin ◽  
◽  
...  
Keyword(s):  
Key Words ◽  
Posterior Chamber ◽  
Late Period ◽  
Corneal Crosslinking ◽  
Round Shape ◽  
Capsular Fibrosis ◽  
Group I ◽  
The Creation ◽  
Group 2 ◽  
Posterior Chamber Iol

Purpose. Тo develop a method for the formation of anterior capsulorexis for the prevention of capsule block in cataract phacoemulsification with the implantation of a posterior chamber IOL. Material and methods. 135 people were studied, who were divided into two groups depending on the diameter of the performed anterior capsulorexis (CR). Group I (main) included 67 patients (67 eyes), who underwent CR according to the method proposed by the authors-in the form of an ellipse with a large axis of 7,0-7,5 mm along the tunnel incision and a small axis of 4.0-5.0 mm. Group 2 -68 patients (68 eyes), capsulorexis was produced in a round shape- 5-5.5 mm. Results. Complications during surgery – in patients of group 2, a capsule block and a tear in the anterior capsulorhexis were noted in 2.9% of cases, in 3% of cases posterior capsular fibrosis was diagnosed in each group, which required the performance of posterior capsulorhexis. In the late period in one patient of group 2 endothelial-epithelial dystrophy (EED) of the cornea developed, which required ultraviolet corneal crosslinking followed by keratoplasty. Conclusion. The proposed method for the creation of anterior capsulorexis in cataract phacoemulsification with the implantation of a posterior chamber IOL reliably eliminates the possibility of a capsule block due to the formation an oval shaped capsule hole. In addition, it reduces the risk of damage to the lens capsules, ensures reliable fixation of IOLs in the capsule bag and increases access for posterior capsulorhexis, if necessary. Key words: cataract phacoemulsification, posterior chamber IOL, oval capsulorexis, capsule block.

scholarly journals IMAGE-GUIDED SURGERY IN THE SPINE: NEURONAVIGATION VS. FLUOROSCOPY

2015 ◽  
Vol 14 (3) ◽  
pp. 181-185 ◽  
Author(s):  
Vinícius de Paula Guedes ◽  
Elisangela Ferrretti Manffra ◽  
Luiz Roberto Aguiar
Keyword(s):  
Blood Transfusion ◽  
Pedicle Screws ◽  
Operation Time ◽  
Computer Assisted Surgery ◽  
Accurate Method ◽  
Implantation Technique ◽  
Computer Assisted ◽  
Group I ◽  
Operative Complications ◽  
Group Ii

Objectives:To evaluate the accuracy and the operative complications of implanting pedicle screws in the thoracic and lumbar spine, using computer-assisted surgery compared to the implantation technique using fluoroscopy.Methods:A retrospective study was conducted at the Hospital Universitário Cajuru PUC-PR from January 2000 to January 2009. Two groups of patients undergoing implant pedicle screws were analyzed (n=80). Group I received implant pedicle screws through fluoroscopy technique and group II, through neuronavigation technique. The accuracy of positioning of pedicle screws was evaluated using rating scales.Results:The accuracy was higher in group II, where 77.5% of the screws were correctly positioned, whereas there were only 28.5% in group I (p=0.001). There was a reduction of 95% (CI: 80-97%) in the risk of screws misplacement in group II. The average operation time was 312.2±78.1 minutes in group I and 270.3±41.4 in group II (p=0.004). Blood transfusion was needed in 28 patients in group I and 10 patients in group II (p=0.005), resulting in 64% risk reduction of blood transfusion in group II. Eight patients in group I underwent revision surgery whereas only one patient in the group II, that is, 75% of surgical revision risk reduction.Conclusion:The implantation technique of pedicle screws using neuronavigation is a more accurate method and has less operative complications compared with the technique that uses fluoroscopy.

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