Solution of the inverse problem for Bessel operator on an interval [1,a] [1,a][ 1,a ]

Abstract In this note, we solve the inverse nodal problem for Bessel-type p-Laplacian problem −(y′(p−1))′=(p−1)(λ−ω(x))y(p−1),1≤x≤a,y(1)=y(a)=0, $$\begin{aligned}& - \bigl( y^{{\prime} (p-1)} \bigr) ^{\prime} = ( p-1 ) \bigl( \lambda- \omega(x) \bigr) y^{(p-1)},\quad1\leq x\leq a, \\& y(1) =y(a)=0, \end{aligned}$$ on a special interval. We obtain some nodal parameters like nodal points and nodal lengths. In addition, we reconstruct the potential function by nodal points. Results obtained in this paper are similar to the classical Sturm–Liouville problem. However, equations of this type are considered with the condition defined at the origin. We solve the problem on the interval [1,a] $[1,a]$, that problem is not singular

Pattern VEP is a useful technique in monitoring the effectiveness of occlusion therapy in amblyopic eyes under occlusion therapy

Purpose: To evaluate the effectiveness and clinical significance of pattern visual evoked potential (P-VEP) parameters on visual acuity in amblyopic patients under occlusion therapy. Methods: A total of 34 consecutive children with anisometropic amblyopia were included in this study. All patients underwent a full initial ophthalmologic and orthoptic evaluation. P-VEP test was performed in all cases and binocular vision was tested and recorded with Worth's four-dot test and Bagolini striated glasses at each visit. Part-time occlusion therapy was performed by using adhesive patches. Results: The mean (+/- SEM) cycloplegic refractive error was + 5.6 +/- 0.6 diopters (D) in the amblyopic eyes and + 1.8 +/- 0.2 D in the normal eye. The mean levels of best-corrected visual acuity were statistically differed between each measurement for occlusion therapy (for each, p < 0.05). The ratio of the patients with binocular vision increased after 6 months occlusion therapy and the difference was statistically significant (p < 0.05). In addition, P100 amplitude improved at each visit and the difference was significant when compared with baseline values (for each, p < 0.05). Conclusions: P100 amplitude of the P-VEP test parallels the improvement in subjective visual acuity in amblyopic eyes under occlusion therapy. Therefore, this test may be useful in monitoring the visual acuity in the preverbal or non-verbal patched patients

Small bowel intussusception together with appendicitis in childhood: A case report

Simultaneous diagnosis of intussusception and appendicitis in the same patient have rarely been described in the pediatric population. We reported a small bowel intussusception case together with acute suppurative appendicitis. A 9 years old boy had abdominal colic pain and he had vomit frequently. On physical examination, he was awake, active and uncomfortable. Abdominal ultrasound (US) suggested ileoileocolic intussusception. Laparotomy was performed and an ileoileocolic intussusception was visualized. Ileoileocolic intussusception was reducted manually. After reduction appendix was visualized and it was acute suppurative appendicitis. Appendectomy was performed. Neither medical nor surgical problem occurred during long term follow-up. In conclusion, we though that it is important to examine the other pathologic conditions such as leading points, bowel complications and even appendicitis in case of intussusception

Effect of intravitreal ranibizumab injection on introcular pressure

Amaç: Vasküler endotelyal büyüme faktör inhibitörü ranibizumabın göz içi basıncına etkisini incelemek.Gereç ve Yöntem: Eksüdatif yaşa bağlı maküla dejenerasyonu nedeniyle intravitreal ranibizumab enjeksiyon tedavisi alan 56 olgunun 61 gözü retrospektif olarak incelendi. Olguların enjeksiyondan sonra 1. gün, 1. ay, 3. ay ve 6. aydaki göz içi basınç değişimleri değerlendirildi. Bulgular: Olguların yaş ortalaması 72.6±7.5 idi. İntravitreal ranibizumab enjeksiyonu 61 göze uygulandı. Olguların takip süresi 6 aydı. Enjeksiyondan sonraki 1. günde olguların göz içi basınçları 21 mmHg, 3. ayda bir olguda > 21 mmHg idi. Olguların enjeksiyon öncesi ile 1. gün, 1, 3 ve 6. ayda ölçülen ortalama göz içi basınç değerleri karşılaştırıldığında istatiksel olarak anlamlı bir değişiklik olmadığı tespit edildi (p>0.05). Sonuç: Eksudatif yaşa bağlı maküla dejenerasyonu nedeniyle intravitreal ranibizumab enjeksiyonu göz içi basıncına etkisi olmamakla birlikte bazı olgularda göz içi basınç artışına neden olmaktadır.Purpose: To investigate the effect of ranibizumab a vascular endothelial growth factor inhibitor - on intraocular pressure.Material and Methods: Records of sixty-one eyes of 56 patients received intravitreal ranibizumab injection due to exudative age-related macular degeneration were investigated, retrospectively. Intraocular pressures measured 1 day, 1, 3 and 6 months after the injection were evaluated. There was no significant difference among intraocular pressure values measured before and after the injections.Results: The mean age of the patients was 72.6&plusmn;7.5. Sixty one eye received intravitreal ranibizumab injection. The followup duration was 6 months. all the patients had intraocular pressure lower than 21 mmHg at first dat after the injection. At first month and third month, there was only one patient having intraocular pressure higher than 21 mmHg. . There was no significant difference among intraocular pressure values measured before and after the injections.Conclusion: Although intravitreal ranibizumab injection has no effect on intraocular pressure, few cases may have increased intraocular pressure

Bilateral Serous Detachment Associated with Latanoprost/Timolol Fixed Combination Use: A Report of One Phakic Case

We present a case of bilateral diffuse serous detachment associated with latanoprost/timolol fixed combination treatment which was recovered after changing treatment

Muscle strength and function of shoulders with Bankart lesion after successful arthroscopic treatment: interlimb comparison 24 months after surgery

The purpose of this study was to examine outcomes following arthroscopic Bankart repair with the focus on strength after the repair

The Injection of Air/Oxygen Bubble into the Anterior Chamber of Rabbits as a Treatment for Hyphema in Patients with Sickle Cell Disease

Purpose. To investigate the changes of partial oxygen pressure (PaO2) in aqueous humour after injecting air or oxygen bubble into the anterior chamber in sickle cell hyphema. Methods. Blood samples were taken from the same patient with sickle cell disease. Thirty-two rabbits were divided into 4 groups. In group 1 (n=8), there was no injection. Only blood injection constituted group 2 (n=8), both blood and air bubble injection constituted group 3 (n=8), and both blood and oxygen bubble injection constituted group 4 (n=8). Results. The PaO2 in the aqueous humour after 10 hours from the injections was 78.45 ± 9.9 mmHg (Mean ± SD) for group 1, 73.97 ± 8.86 mmHg for group 2, 123.35 ± 13.6 mmHg for group 3, and 306.47 ± 16.5 mmHg for group 4. There was statistically significant difference between group 1 and group 2, when compared with group 3 and group 4. Conclusions. PaO2 in aqueous humour was increased after injecting air or oxygen bubble into the anterior chamber. We offer to leave an air bubble in the anterior chamber of patients with sickle cell hemoglobinopathies and hyphema undergoing an anterior chamber washout

Effectiveness of sub-Tenon's block in pediatric strabismus surgery

ABSTRACTBACKGROUND AND OBJECTIVES: Strabismus surgery is a frequently performed pediatric ocular procedure. A frequently occurring major problem in patients receiving this treatment involves the oculocardiac reflex. This reflex is associated with an increased incidence of postoperative nausea, vomiting, and pain. The aim of this study was to investigate the effects of a sub-Tenon's block on the oculocardiac reflex, pain, and postoperative nausea and vomiting.METHODS: 40 patients aged 5-16 years with American Society of Anesthesiologists status I-II undergoing elective strabismus surgery were included in this study. Patients included were randomly assigned into two groups by using a sealed envelope method. In group 1 (n = 20), patients did not receive sub-Tenon's anesthesia. In group 2 (n = 20), following intubation, sub-Tenon's anesthesia was performed with the eye undergoing surgery. Atropine use, pain scores, oculocardiac reflex, and postoperative nausea and vomiting incidences were compared between groups.RESULTS: There were no significant differences between groups with regard to oculocardiac reflex and atropine use (p > 0.05). Pain scores 30 min post-surgery were significantly lower in group 2 than in group 1 (p < 0.05). Additional analgesic needed during the postoperative period was significantly lower in group 2 compared to group 1 (p < 0.05).CONCLUSIONS: In conclusion, we think that a sub-Tenon's block, combined with general anesthesia, is not effective and reliable in decreasing oculocardiac reflex and postoperative nausea and vomiting. However, this method is safe for reducing postoperative pain and decreasing additional analgesia required in pediatric strabismus surgery