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Application of Anterior Segment Optical Coherence Tomography in Refractive Surgery
Issue:
Volume 5, Issue 2, June 2020
Pages:
41-46
Received:
21 February 2020
Accepted:
4 March 2020
Published:
17 March 2020
Abstract: With the development of modern medical technology, the accuracy and safety of refractive surgery in ophthalmology have been constantly improved. Many new examination methods have been applied in research and clinical practice, and anterior segment optical coherence tomography (AS-OCT) is a new non-contact non-invasive optical image diagnosis technology, which can be used to measure the biological structure of anterior segment. AS-OCT is widely used in the clinical diagnosis and treatment of corneal diseases, cataracts, glaucoma and other specialties due to its advantages of fast scanning speed, deep layer, high penetration rate and high resolution. In addition, AS-OCT can also obtain: corneal thickness, corneal epithelial thickness map, corneal topographic map, anterior chamber depth (ACD), white to white (WTW), crystal arch height (LV), Angle width of the anterior chamber, etc., so it is especially suitable for the pre-operative screening, design of operation scheme and safety evaluation after the operation of auxiliary ophthalmic refractive surgery (including corneal refractive surgery and intraocular refractive surgery). At present, corneal refractive surgery mainly includes excimer laser in-situ keratomileusis (LASIK), femtosecond laser-assisted LASIK (FS-LASIK), femtosecond laser stromal lens removal for small incision (SMILE), and transepithelial laser keratoplasty (T-PRK), and ICL implantation is the main method of intraocular refractive surgery. This article will review the clinical application of AS-OCT in corneal refractive surgery and intraocular refractive surgery, and provide reference for clinical practice.
Abstract: With the development of modern medical technology, the accuracy and safety of refractive surgery in ophthalmology have been constantly improved. Many new examination methods have been applied in research and clinical practice, and anterior segment optical coherence tomography (AS-OCT) is a new non-contact non-invasive optical image diagnosis techno...
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Formation Mechanism and Clinical Application of the Dominant Eye
Issue:
Volume 5, Issue 2, June 2020
Pages:
47-52
Received:
12 March 2020
Accepted:
26 March 2020
Published:
7 April 2020
Abstract: Eye dominance is often defined as a preference for the visual input of one eye to the other. The dominant eye is a common human side of the functional advantages and is significant for clinical diagnosis and treatment of eye disease. While significant research has been performed on the dominant eye, researchers are still unable to come to a general consensus because they are unable to delve deeply into researching the dominant eye in more details. This is very much unlike the study of the human limbs as, over the years, scientists have been able to successfully research its functionality in every aspect. Research from the dominant eye is divided into three phases: Pre-critical, critical period, after the critical period. Ocular dominance is the advantage of a three-dimensional situation, including sighting, movement, acuity, representing different aspects respectively. There are different advantage aspects with different inspection methods. The dominant eye in oblique amblyopia treatment, optometry, refractive surgery has an important application value. With the rapid development of marginal disciplines such as brain science, neurodevelopment, and neurobiology, the rapid advancement and widespread application of neuroelectrophysiology and optical imaging technology have led to deeper research and understanding of the dominant eyes. The purpose of this article is to assess the focus on the dominant eye formation mechanism, inspection methods and review the status of clinical diagnosis and the treatment of eye diseases.
Abstract: Eye dominance is often defined as a preference for the visual input of one eye to the other. The dominant eye is a common human side of the functional advantages and is significant for clinical diagnosis and treatment of eye disease. While significant research has been performed on the dominant eye, researchers are still unable to come to a general...
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A Novel Inexpensive Rhexis Technique-Can Vac Ccc for Immature and White Intumescent Cataract - Our Experience
Shreesha Kumar Kodavoor,
Bijita Deb,
Dandapani Ramamurthy
Issue:
Volume 5, Issue 2, June 2020
Pages:
53-56
Received:
21 January 2020
Accepted:
10 April 2020
Published:
28 April 2020
Abstract: Background: 870 eyes of 855 patients with intumescent immature and total white cataract were enrolled in this retrospective clinical study (2013-2018). Methods: Through a side port using a 25 gauze round/flat tipped fine cannula connected to a 5ml syringe (after a nick being created by a regular 26 gauze cystitome) the free capsular flap was vacuumed by the tip of the 25 gauge cannula and suction pressure created by withdrawing the piston of the syringe and a controlled motion done to create a circular rhexis, without withdrawing the instrument from anterior chamber and aspirating liquefied cortex by the same cannula. All cases were done under peribulbar anesthesia. Results: A complete cannula vacuum continuous curvilinear capsulorhexis (CanVac-CCC) was achieved in 860 cases (98.85%) except eight cases (0.91%) which had anterior capsular rhexis extension and two cases (0.22%) which had also extended posterior capsular tear. Conclusion: Performing CanVac -CCC with our technique is safe and affordable and may be an alternative promising method to routine CCC by using 26 gauge cystitome, Utrata or microrhexis forceps.
Abstract: Background: 870 eyes of 855 patients with intumescent immature and total white cataract were enrolled in this retrospective clinical study (2013-2018). Methods: Through a side port using a 25 gauze round/flat tipped fine cannula connected to a 5ml syringe (after a nick being created by a regular 26 gauze cystitome) the free capsular flap was vacuum...
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Concomitant Child Strabismus: Clinical Forms and Treatment
Chantal Makita,
Charles Geraud Fredy Nganga Ngabou,
Eyissa Nzi Gombe,
Reinette Messe Ambia Koulimaya
Issue:
Volume 5, Issue 2, June 2020
Pages:
57-60
Received:
15 April 2020
Accepted:
26 April 2020
Published:
27 May 2020
Abstract: Aim: To describe the different clinical forms of concomitant strabismus and the results of treatment. Patients and methods: Descriptive retrospective study conducted from January 2007 to December 2017 (10 years), on records children with strabismic, aged 1 to 16 in the department of Ophthalmology of the University Hospital of Brazzaville. Results: Of the 7,722 children collected during the study period, 130 had strabismus, a rate of 1.7%. Forty three (43%) children were boys and 74 (57%) were girls with a sex ratio of 0.75. The average age of the first consultation was 9.3 ± 3.2 years old (1 to 16). The age group of 2-6 years old was the most represented with 43.9% of patients. Depending on the type of strabismus we found as many convergent as divergent strabismus which affects both girls and boys. There was 72.3% monocular strabismus and 27.7% alternation. Dominance was greater on the right, 30.7% and 15.4% dominance on the left. The majority of patients had an initial angle ≥ 25 prismatic diopters (∆), i.e. 43%, 38.5% had a deviation between 10 and 25∆, 18.5% had a deviation between 10 and 5∆. Ametropia was associated with strabismus in 107 patients or 82% of the cases. Optical and orthoptic treatment was prescribed in 67.7% of cases. 11 patients had deep amblyopia. After treatment 54% of the patients had a final deviation ≤ 10∆ and 29.1% had a final deviation ≥ 25 ∆. Conclusion: We found as many convergent strabismus as divergent strabismus. The most representative age group was that of 2 to 6 years old. The treatment was optical and orthoptic.
Abstract: Aim: To describe the different clinical forms of concomitant strabismus and the results of treatment. Patients and methods: Descriptive retrospective study conducted from January 2007 to December 2017 (10 years), on records children with strabismic, aged 1 to 16 in the department of Ophthalmology of the University Hospital of Brazzaville. Results: ...
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Infectious Scleritis: Clinicomicrobiological Review of Infectious Scleritis
Anjana Somanath,
Raksheeth Rajgopal Nathan,
Lalitha Prajna,
Rathinam Sivakumar
Issue:
Volume 5, Issue 2, June 2020
Pages:
61-65
Received:
5 April 2020
Accepted:
29 April 2020
Published:
27 May 2020
Abstract: Infectious scleritis due to an infective etiology can occur following accidental trauma or surgery. However, the clinical manifestations of infectious scleritis may be similar to immune mediated scleritis. Infectious scleritis is treated with antibiotic therapy and surgical intervention if required. Treatment with corticosteroids and immunosuppressives may clinically worsen the infectious scleritis. Hence a careful clinical evaluation is necessary to rule out infectious etiology before treatment. Poor prognosis is due to delay in diagnosis and treatment. This study aimed to analyse the risk factors, clinical outcome and treatment in patients with infectious scleritis. A retrospective study was done from January 2013 to December 2018. This study includes 11 eyes. Microbiology analysis was done on the drained material. 11 eyes were culture positive. They were treated according to culture sensitivity. One eye worsened clinically and required enucleation. However, the other eyes improved and visual acuity was maintained in the 10 eyes. In our study, trauma was the most common cause of infectious scleritis. The common organisms were Nocardia, coagulase negative Staphylococcus aureus and fungi. To conclude, trauma was the most common cause of infectious scleritis in our study. Therefore, early diagnosis and treatment can lead to a reduced rate of complication.
Abstract: Infectious scleritis due to an infective etiology can occur following accidental trauma or surgery. However, the clinical manifestations of infectious scleritis may be similar to immune mediated scleritis. Infectious scleritis is treated with antibiotic therapy and surgical intervention if required. Treatment with corticosteroids and immunosuppress...
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Eplerenone in the Central Serous Chorioretinopathy Chronic
Mehdi Khamaily,
Joumany Brahim Salem,
Imane Tarib,
Wafaa Akioud,
Soukaina Haddougui,
Yassine Mouzari,
Fouad El Asri,
Karim Reda,
Abdelbarre Oubaaz
Issue:
Volume 5, Issue 2, June 2020
Pages:
66-69
Received:
21 May 2020
Accepted:
2 June 2020
Published:
17 June 2020
Abstract: Summary: Central serous chorioretinitis is a relatively common eye condition. It is a maculopathy of the young subject, characterized by the presence of a retinal serous detachment, usually located at the posterior pole, associated with changes in the pigment epithelium. Materials and methods: a prospective study was conducted between Mars 2018 and Mars 2020 at the Mohammed V military hospital in Rabat, in 11 patients treated with eplerenone for a chronic CRSC evolving for at least 3 months with repercussions on visual acuity, at the dose of 25 mg per day the first week, then 50 mg per day for an average treatment duration of 15 weeks. For each patient, visual acuity and macular OCT (central thickness of the retina) were evaluated before treatment and at 1, 3 and 6 months. Results: The mean age of the patients was 32,54 ± 6,78. 11 men. All patients were under stress, and just two patient reported the notion of taking corticosteroids. The average duration of progression of the pathology before treatment was 20 weeks. A clear improvement in visual acuity (logMAR) was observed in 9 patients: mean visual acuity increased from 0,7 at admission to 0,69 at 1 month (p: 0.014), 0,4 at 3 months (p: 0.013) and 0,28 at 6 months (p: 0.025). The mean central macular thickness decreased from 423 ± 91 μm before treatment, 317 ± 82 μm at 1 month and 292 ± 73,6 μm at 3 months and 251± 94 μm at 6 months (p 0.026, 0.01 and 0.038 respectively). 5 patients had a complete disappearance of SRF at 3 months. 1 other patients had a complete disappearance of the DSR at 6 months. The treatment was stopped for 3 patients, including 1 at 4 weeks for severe muscle cramps, and hyperkaliema for the 2 others at 10 weeks ans 11 weeks of treatment. Conclusion: In our study, the introduction of eplerenone resulted in significant improvement in both anatomical and functional outcomes in patients with chronic CSCR.
Abstract: Summary: Central serous chorioretinitis is a relatively common eye condition. It is a maculopathy of the young subject, characterized by the presence of a retinal serous detachment, usually located at the posterior pole, associated with changes in the pigment epithelium. Materials and methods: a prospective study was conducted between Mars 2018 and...
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