scholarly journals Changes in Vessel Density of the Patients with Narrow Antenior Chamber after an Acute Intraocular Pressure Elevation Observed by OCT Angiography

2019 ◽  
Author(s):  
ziwei Ma ◽  
WENHAN QIU ◽  
DANNI ZHOU ◽  
WEIHUA YANG ◽  
XUEFENG PAN ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Retinal Vessel ◽  
Vessel Density ◽  
Significant Difference ◽  
Intraocular Pressure Elevation ◽  
Acute Elevation ◽  
Group A ◽  
Prospective Comparative Study ◽  
Iop Elevation ◽  
Group B

Abstract Background:Although the pathogenesis of glaucoma is not fully understood ,an elevated intraocular pressure (IOP) is a major factor contributing to its development and progression. The aim of this study was to investigate the changes in the vessel densities of the macula and optic nerve head (ONH) after an acute elevation in the intraocular pressure (IOP) observed using optical coherence tomography angiography (OCTA). Methods: This was a prospective comparative study of subjects with narrow anterior chamber angles who underwent laser peripheral iridotomies (LPIs). The IOP was measured before and one hour after the LPI. The retinal vessel densities of the macula and ONH were measured using OCTA at the baseline and one hour after the LPI. Results: A total of 64 eyes of 51 individuals were enrolled in this study, and 58 eyes of 43 individuals finally completed the study with a mean IOP rise of 10.5 ± 7.6 mmHg after the LPI. Based on the magnitude of the rise in the IOP, we divided the subjects into three groups: group A = IOP rise ≤ 10 mmHg, group B = 10 mmHg < IOP rise ≤ 20 mmHg, and group C = IOP rise > 20 mmHg. The vessel density did not differ after the acute IOP elevation in either the macular region or papillary region in group A or group B (p > 0.05), but there was a significant difference in group C (p < 0.05). However, when the subjects were not separated into groups, the vessel densities of the ONH and macular region did not differ between the measurements obtained at the baseline and one hour after the LPI (p>0.05). The correlation existed in peripapillary and macular vessel density (p < 0.05). Conclusion: In these subjects with narrow antenior chamber, an acute mild or moderate IOP elevation for one hour after the LPI did not affect the vessel density in the macula or ONH, as examined using OCTA. However, when the IOP rise was greater than 20 mmHg, the macular and papillary vessel density decreased significantly.

scholarly journals Changes in Vessel Density of the Patients with Narrow Antenior Chamber after an Acute Intraocular Pressure Elevation Observed by OCT Angiography

2019 ◽  
Author(s):  
Zi-wei Ma ◽  
Wen-han Qiu ◽  
Dan-ni Zhou ◽  
Wei-hua Yang ◽  
Xue-feng Pan ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Retinal Vessel ◽  
Vessel Density ◽  
Significant Difference ◽  
Intraocular Pressure Elevation ◽  
Acute Elevation ◽  
Group A ◽  
Prospective Comparative Study ◽  
Iop Elevation ◽  
Group B

Abstract Background:Although the pathogenesis of glaucoma is not fully understood ,an elevated intraocular pressure (IOP) is a major factor contributing to its development and progression. The aim of this study was to investigate the changes in the vessel densities of the macula and optic nerve head (ONH) after an acute elevation in the intraocular pressure (IOP) observed using optical coherence tomography angiography (OCTA). Methods: This was a prospective comparative study of subjects with narrow anterior chamber angles who underwent laser peripheral iridotomies (LPIs). The IOP was measured before and one hour after the LPI. The retinal vessel densities of the macula and ONH were measured using OCTA at the baseline and one hour after the LPI. Results: A total of 64 eyes of 51 individuals were enrolled in this study, and 58 eyes of 43 individuals finally completed the study with a mean IOP rise of 10.5 ± 7.6 mmHg after the LPI. Based on the magnitude of the rise in the IOP, we divided the subjects into three groups: group A = IOP rise ≤ 10 mmHg, group B = 10 mmHg < IOP rise ≤ 20 mmHg, and group C = IOP rise > 20 mmHg. The vessel density did not differ after the acute IOP elevation in either the macular region or papillary region in group A or group B (p > 0.05), but there was a significant difference in group C (p < 0.05). However, when the subjects were not separated into groups, the vessel densities of the ONH and macular region did not differ between the measurements obtained at the baseline and one hour after the LPI (p>0.05). The correlation existed in peripapillary and macular vessel density (p < 0.05). Conclusion: In these subjects with narrow antenior chamber, an acute mild or moderate IOP elevation for one hour after the LPI did not affect the vessel density in the macula or ONH, as examined using OCTA. However, when the IOP rise was greater than 20 mmHg, the macular and papillary vessel density decreased significantly.

scholarly journals Changes in the Retinal Blood Flow after an Acute Intraocular Pressure Elevation Observed by Optical Coherence Tomography Angiography

2019 ◽  
Author(s):  
Ziwei Ma ◽  
Wen-han Qiu ◽  
Dan-ni Zhou Wei-hua Yang ◽  
Xue-feng Pan ◽  
Hong Chen
Keyword(s):  
Blood Flow ◽  
Optical Coherence Tomography ◽  
Intraocular Pressure ◽  
Optical Coherence Tomography Angiography ◽  
Optical Coherence ◽  
Blood Flows ◽  
Significant Difference ◽  
Group A ◽  
Iop Elevation ◽  
Group B

Abstract Background:Although the pathogenesis of glaucoma is not fully understood ,an elevated intraocular pressure (IOP) is a major factor contributing to its development and progression. The aim of this study was to investigate the changes in the retinal blood flows of the macula and optic nerve head (ONH) after an acute elevation in the intraocular pressure (IOP) observed using optical coherence tomography angiography (OCTA). Methods: This was a prospective comparative study of subjects with narrow anterior chamber angles who underwent laser peripheral iridotomies (LPIs). The IOP was measured before and one hour after the LPI. The retinal blood flows of the macula and ONH were measured using OCTA at the baseline and one hour after the LPI. Results: A total of 64 eyes of 51 individuals were enrolled in this study, and 58 eyes of 43 individuals finally completed the study with a mean IOP rise of 10.5 ± 7.6 mmHg after the LPI. Based on the magnitude of the rise in the IOP, we divided the subjects into three groups: group A = IOP rise ≤ 10 mmHg, group B = 10 mmHg < IOP rise ≤ 20 mmHg, and group C = IOP rise > 20 mmHg. The vessel density did not differ after the acute IOP elevation in either the macular region or papillary region in group A or group B (p > 0.05), but there was a significant difference in group C (p < 0.05). However, when the subjects were not separated into groups, the vessel densities of the ONH and macular region did not differ between the measurements obtained at the baseline and one hour after the LPI (p>0.05). Conclusion: In these normal subjects, an acute mild or moderate IOP elevation for one hour after the LPI did not affect the blood flow in the macula or ONH, as examined using OCTA. However, when the IOP rise was greater than 20 mmHg, the macular and papillary blood flows decreased significantly.

scholarly journals Comparison of anti-inflammatory effects of eye drops formulations after uncomplicated cataract surgery

2020 ◽  
Vol 12 ◽  
pp. 251584142092430
Author(s):  
Carlo Cagini ◽  
Adriana Pellegrino ◽  
Alessia Iannone ◽  
Alessio Cerquaglia ◽  
Antonella Modugno ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Cataract Surgery ◽  
Aqueous Humour ◽  
Corneal Thickness ◽  
Macular Thickness ◽  
Eye Drops ◽  
Significant Difference ◽  
Group A ◽  
Group B

Aim: The aim of this study is to compare the efficacy of different dexamethasone eye drops formulations in controlling postoperative inflammation. Methods: Cataract surgery was carried out in 72 patients (35 males) divided into two groups: group A (36 patients, mean age = 78.0 ± 5.6) received four times daily for 2 weeks a suspension containing tobramycin 0.3% mg/ml + dexamethasone 0.1% mg/ml, and group B (36 patients, mean age = 76.2 ± 6.8) a solution containing tobramycin 0.3% mg/ml + dexamethasone 0.1% mg/ml. Both groups received ofloxacin 0.5% four times daily for 7 days, and nepafenac 0.1% three times daily for 3 weeks. Best-corrected visual acuity, intraocular pressure, corneal thickness, endothelial cells count, aqueous flare and macular thickness were evaluated preoperatively and at 1 day, 15 days, 1 and 2 months. Results: In group A, intraocular pressure, corneal thickness and aqueous humour flare values preoperatively and at the end of follow-up were 14.3 ± 1.8 and 13.2 ± 1.8 mmHg, 546.4 ± 34.6 and 539.6 ± 36.1 µm, 11.84 ± 4.44 and 13.52 ± 5.54 ph/ms, respectively, with no statistically significant difference. In group B, intraocular pressure, corneal thickness and aqueous humour flare values preoperatively and at the end of follow-up were 14.3 ± 1.5 and 13.1 ± 1.7 mmHg, 552.9 ± 37.4 and 548.1 ± 39.3 µm, 11.45 ± 4.06 and 13.73 ± 4.99 ph/ms, respectively, with no statistically significant difference. No difference was detected in the macular thickness values in the parafoveal area preoperatively and at 2 months follow-up in group A (332.18 ± 16.19 and 337.71 ± 16.33 µm) and group B (329.11 ± 18.28 and 334.37 ± 20.86 µm), respectively. Conclusion: The two different formulations of dexamethasone eye drops reached the same anti-inflammatory effects.

scholarly journals The Effect of Body Posture Changes and Central Corneal Thickness on Intraocular Pressure among Healthy Malays

2021 ◽  
Vol 18 (6) ◽  
Author(s):  
Nadiah RASHIDI ◽  
Md Muziman Syah MD MUSTAFA ◽  
Norsham AHMAD ◽  
Megat Ahmad Fadhil MEGAT BASRI ◽  
Nor Ariza MOHAMMAD ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Prone Position ◽  
Central Corneal Thickness ◽  
Corneal Thickness ◽  
Body Posture ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
The Relationship ◽  
Corneal Apex

Purpose: To study the relationship between intraocular pressure (IOP), posture, and central corneal thickness (CCT) among healthy Malays. Method: Thirty-four young adults had their IOPs measured using a handheld tonometer (Accutome, Pennsylvania, USA) after maintaining 5 min at four different postures; sitting upright, supine, supine & 45° inclination, and prone positions. The sequences of the postures were made random. CCT was measured using Oculus Pentacam (Oculus, Wetzlar, Germany), and the value at the corneal apex was taken. Participants were grouped into Group A with CCT of < 550 μm, and Group B of > 550 μm. Results: The highest IOP was recorded at the prone position 23.77±2.71 mmHg (p < 0.001), and the lowest was at sitting upright 15.43±2.67 mmHg (p < 0.001). IOP at the supine position was 17.31±3.07 mmHg, and at the supine & 45° inclination position was 16.00±2.80 mmHg. IOPs were significantly different between sitting upright and supine (p = 0.03), between sitting upright and prone (p < 0.001), between supine and prone (p < 0.001), and between supine & inclined 45° and prone (p < 0.001). There was no significant difference in IOPs between Group A and Group B at different postures (p > 0.05). Conclusions: Change in body posture significantly affects IOP, with the lowest IOP during the sitting upright position, and the highest at the prone position. IOP change upon posture shifts was not affected by CCT.

scholarly journals Laparoscopic versus open hysterectomies in obese patients

2018 ◽  
Vol 5 (12) ◽  
pp. 3893
Author(s):  
Soliman A. El Shakhs ◽  
Moharam A. Mohamed ◽  
Mahmoud A. Shahin ◽  
Ahmed M. Eid
Keyword(s):  
Blood Loss ◽  
Surgical Procedure ◽  
Operative Time ◽  
Laparoscopic Hysterectomy ◽  
Obese Patients ◽  
Optimal Route ◽  
Significant Difference ◽  
Group A ◽  
Prospective Comparative Study ◽  
Group B

Background: Hysterectomy is one of the most frequently performed surgical procedure. Though there are three approaches in hysterectomy (open, vaginal and laparoscopic), still there are controversies regarding the optimal route for performing it.Methods: This prospective comparative study included 42 obese patients subjected for pan-hysterectomy as a treatment. The forty-two patients were allocated into two groups: group (A) subjected to laparoscopic pan-hysterectomy, group (B) subjected to open pan-hysterectomy.Results: There was significant difference between the two groups regarding mean operative time, blood loss, analgesic requirements and hospital stay, while no significant difference regarding intra-operative complications.Conclusions: Laparoscopic hysterectomy in obese patients has emerged as a viable, safe and better alternative to open hysterectomy amongst appropriately trained surgeons.

scholarly journals Prospective comparative study of hypospadias surgical repair with and without the use of fibrin sealant

2019 ◽  
Vol 6 (8) ◽  
pp. 2722
Author(s):  
Tamer A. Sultan ◽  
Tamer A. Faktry ◽  
Ahmad Nabil ◽  
Mohammed Z. Shenishn
Keyword(s):  
Comparative Study ◽  
Urethral Stricture ◽  
Fibrin Sealant ◽  
Tertiary Care ◽  
Hypospadias Repair ◽  
Flap Necrosis ◽  
Significant Difference ◽  
Group A ◽  
Prospective Comparative Study ◽  
Group B

Background: Hypospadias is the most common congenital malformation of the penis, affecting about 4-6 males per 1000 male births, and ranging in severity from a urethral meatus that is slightly off-center to a meatus in the perineal area, The aim of this study was to evaluate whether the application of fibrin sealant over the suture lines of neo-urethra reduces complications and improve overall outcome in children hypospadias repair.1,2 Methods: It was a prospective comparative study conducted in a tertiary care center (Department of pediatric surgery - Menoufia University), we included the patients age more than 6 months and less than 4 years presented with hypospadias to our department in this study. A total 30 patients of coronal, sub coronal, mid shaft hypospadias and distal hypospadias were studied and were divided into two groups, group (A) 15 cases and group (B) 15 cases. All patients underwent a tabularized incised plate (TIP) repair with a Dartos vascularized pedicle flap to cover the neo-urethra, In group (B) a thin layer of fibrin sealant applied over the suture line of neo-urethra but no sealant was used in group (A).Results: Postoperative surgical complications: urethra cutaneous fistula, flap dehiscence, flap necrosis and urethral stricture were recorded. Urethrocutaneous fistula flap dehiscence and flap necrosis were lower in group (B) patients. There was no significant difference in postoperative urethral stricture between two groups. Conclusions: Use of fibrin sealant in hypospadias repair is safe and can reduce complications.

Trabeculectomy with OloGen versus Mitomycin C for the Treatment of Silicone Oil-Induced Glaucoma

2021 ◽  
Author(s):  
Hisham Samy Shalaby ◽  
Noureldin Hussein Hashem
Keyword(s):  
Intraocular Pressure ◽  
Mitomycin C ◽  
Silicone Oil ◽  
Success Rates ◽  
Kaplan Meier ◽  
Significant Difference ◽  
Pressure Lowering ◽  
Group A ◽  
Group B

Abstract Aim To compare the intraocular pressure-lowering effect and success rate of trabeculectomy with OloGen to that of trabeculectomy with mitomycin C (MMC) in cases of silicone oil-induced glaucoma. Materials and Methods Forty eyes of forty patients with elevated intraocular pressure (IOP) after vitrectomy and silicone oil injection (followed by silicone oil removal) were assigned to two groups. Group A included 20 cases who underwent trabeculectomy with OloGen, while group B cases contained 20 cases undergoing trabeculectomy with MMC. The follow-up period was 24 months. Patients enrolled had IOP > 21 mmHg despite being on antiglaucoma medications. Results The mean postoperative IOP reduction was lower in group A than in group B at all follow-up visits, but this difference was not statistically significant (p > 0.05). Moreover, group A and B patients were found to be similar as regards the need for postoperative antiglaucoma medications on all follow-up visits. The Kaplan-Meier survival analysis curves for the two groups revealed slightly higher success rates in group B than in group A. However, these differences were not statistically significant for both qualified success (IOP ≤ 21 mmHg with or without antiglaucoma medications) and complete success (IOP ≤ 21 mmHg without antiglaucoma medications). There was no significant difference in the postoperative complication rate between the two groups. Conclusion OloGen implant lowers IOP to a similar extent as MMC when combined with trabeculectomy for the treatment of silicone oil-induced glaucoma, and with comparable success rates. The rate of postoperative complications is similar for OloGen implantation and MMC.

scholarly journals Clinical Observation of Retinal Vessel Density In Type 2 Diabetic Patients With High Mopyopia

2021 ◽  
Author(s):  
Ruifeng Su ◽  
Zhiyang Jia
Keyword(s):  
High Myopia ◽  
Retinal Vessel ◽  
Vessel Density ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
Group A ◽  
Group B ◽  
Retinal Vessel Density ◽  
Type 2 Diabetic

Abstract Purpose: To quantitatively analyze the difference of superficial and deep retinal vessel density between diabetic patients with high myopia , diabetic patients without high myopia and normal subjects.Methods: This cross-sectional study recruited type 2 diabetic patients with no history of ocular treatment in Shijiazhuang, China.Thirty type 2 diabetic patients with high myopia (30 eyes) were included in group A, 30 type 2 diabetic patients (30 eyes) without myopia were included in group B. Another 30 sex-,age-matched healthy volunteers (30 eyes)were included in group C. The superficial and deep retinal vessel density were measured and compared among the three groups to determine the effects of high myopia on diabetes.Results: No statistically significant differences in central superficial retinal vessel density(CSVD) was found in three groups（P＞0. 05).There were significant differences in the temporal superficial retinal vessel density（TSVD）,superior superficial retinal vessel density(SSVD), nasal superficial retinal vessel density(NSVD),inferior superficial retinal vessel density(ISVD) between the three groups, respectively (P＜0.05).TSVD,SSVD,NSVD,ISVD in group A were all lower than those in group B and group C(P ＜0.05).ISVD in group B was lower than that in group C and no statistically significant differences in TSVD,SSVD,NSVD were found between groups B and C(P＞0.05). There were significant differences in central deep retinal vessel density(CDVD),temporal deep retinal vessel density(TDVD),superior deep retinal vessel density(SDVD), nasal deep retinal vessel density(NDVD),inferior deep retinal vessel density(IDVD) between the three groups, respectively (P＜0.05).CDVD in group A was higher than that in group B , but there was no significant difference between group A and group C.TDVD,SDVD,NDVD,IDVD in group A were all lower than those in group B and C(P ＜0.05),and those in group B were lower than those in group C(P ＜0.05).Conclusion: Myopia and diabetes are important factors affecting vessel density. The parafoveal superficial and deep vessel density of type 2 diabetic patients with high myopia were lower than those of diabetics and normal persons. However,there was no difference in macular fovea superficial and deep retinal vessel density between diabetic patients with high myopia and normal persons.Myopia did not show a protective effect on retinal vessel density reduction in diabetic patients.

DeVega versus ring annuloplasty in severe functional tricuspid insufficiency and their impact on the right ventricle

2019 ◽  
Vol 1 (4) ◽  
pp. 133-139
Author(s):  
Yasser Hamdy ◽  
Mohammed Mahmoud Mostafa ◽  
Ahmed Elminshawy
Keyword(s):  
Right Ventricular ◽  
Tricuspid Valve ◽  
Tricuspid Regurgitation ◽  
Early Postoperative Period ◽  
Tricuspid Valve Repair ◽  
Ring Annuloplasty ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
The Right

Background: Functional tricuspid valve regurgitation secondary to left-sided valve disease is common. DeVega repair is simple, but residual regurgitation with subsequent impairment of the right ventricular function is a concern. This study aims to compare tricuspid valve repair using DeVega vs. ring annuloplasty and their impact on the right ventricle in the early postoperative period and after six months. Methods: This is a prospective cohort study of 51 patients with rheumatic heart disease who underwent tricuspid valve repair for secondary severe tricuspid regurgitation. Patients were divided into two groups: group A; DeVega repair (n=34) and group B; ring annuloplasty repair (n=17). Patients were assessed clinically and by echocardiography before discharge and after six months for the degree of tricuspid regurgitation, right ventricular diameter and tricuspid annular plane systolic excursion (TAPSE). Results: Preoperative echocardiographic assessment showed no difference in left ventricular end-systolic diameter, end-diastolic diameter, ejection fraction and right ventricular diameter, however; group A had significantly better preoperative right ventricular function measured by TAPSE (1.96 ± 0.27 vs1.75 ± 0.31 cm; p=0.02). Group B had significantly longer cardiopulmonary bypass time (127.65 ± 13.56 vs. 111.74 ± 18.74 minutes; p= 0.003) and ischemic time (99.06 ± 11.80 vs. 87.15 ± 16.01 minutes; p= 0.009). Pre-discharge, there was no statistically significant difference in the degree of tricuspid regurgitation, but the right ventricular diameter was significantly lower in group B (2.66 ± 0.41 and 2.40 ± 0.48 cm; p=0.049). After six months of follow up, the degree of tricuspid regurgitation (p= 0.029) and the right ventricular diameter were significantly lower in the ring annuloplasty group (2.56 ± 0.39 and 2.29 ± 0.44 cm; p=0.029). Although there was a statistically significant difference in preoperative TAPSE, this difference disappeared after six months. Conclusion: Both DeVega and ring annuloplasty techniques were effective in the early postoperative period, ring annuloplasty was associated with lesser residual regurgitation and better right ventricular remodeling in severe functional tricuspid regurgitation than DeVega procedure after 6-months of follow up.

Effect of short-term use of oral contraceptive pills on intraocular pressure

2020 ◽  
Vol 35 (3) ◽  
Author(s):  
Tayyaba Gul Malik ◽  
Hina Nadeem ◽  
Eiman Ayesha ◽  
Rabail Alam
Keyword(s):  
Oral Contraceptive ◽  
Childbearing Age ◽  
Short Term ◽  
Oral Contraceptive Pills ◽  
Contraceptive Pills ◽  
Time Period ◽  
Significant Difference ◽  
Group A ◽  
Group B ◽  
Short Time

Objective: To study the effect of short-term use of oral contraceptive pills on intra-ocular pressures of women of childbearing age.   Methods: It was a comparative observational study, conducted at Arif memorial teaching hospital and Allied hospital Faisalabad for a period of six months. Hundred female subjects were divided into two groups of 50 each. Group A, included females, who had been taking oral contraceptive pills (OCP) for more than 6 months and less than 36 months. Group B, included 50 age-matched controls, who had never used OCP. Ophthalmic and systemic history was taken. Careful Slit lamp examination was performed and intraocular pressures (IOP) were measured using Goldman Applanation tonometer. Fundus examination was done to rule out any posterior segment disease. After collection of data, we analyzed and compared the intra ocular pressures between the two groups by using ANOVA in SPSS version 21.   Results: Average duration of using OCP was 14.9 months. There was no significant difference of Cup to Disc ratios between the two groups (p= 0.109). However, significant difference was noted between the IOP of OCP group and controls. (p=0.000). Conclusion: OCP significantly increase IOP even when used for short time period.

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