Increased intraocular pressure after vitreoretinal surgery as a cause of ipsilateral amaurosis fugax upon rising to a standing position

2015 ◽  
Vol 93 (1) ◽  
pp. e90-e90
Author(s):  
Leigh H. Spielberg ◽  
Jan C. van Meurs
Keyword(s):  
Intraocular Pressure ◽  
Vitreoretinal Surgery ◽  
Standing Position ◽  
Amaurosis Fugax

scholarly journals Intraocular pressure and choroidal thickness postural changes in multiple system atrophy and Parkinson’s disease

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Maddalena De Bernardo ◽  
Giulio Salerno ◽  
Marco Gioia ◽  
Luigi Capasso ◽  
Maria Claudia Russillo ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Intraocular Pressure ◽  
Multiple System Atrophy ◽  
Choroidal Thickness ◽  
Corneal Thickness ◽  
Standing Position ◽  
Sitting Position ◽  
Postural Changes ◽  
Iop Measurement

AbstractTo evaluate intraocular pressure (IOP) and choroidal thickness (ChT) postural changes in multiple system atrophy (MSA), Parkinson’s disease (PD) patients and healthy controls (HC). 20 MSA patients, 21 PD patients and 14 HC, were examined. All subjects underwent a complete examination, including corneal thickness, ChT, IOP and axial length (AL) measurements. IOP measurement was performed in supine, sitting, and standing positions, whereas ChT in sitting and standing positions. Supine to standing IOP variations were significantly higher in MSA vs PD(p = 0.01) and in MSA vs HC (p < 0.0001), whereas no significant differences were observed between PD and HC (p = 0.397). Mean sub-foveal ChT in MSA was 240 ± 92 μm in sitting position, and 215 ± 94 μm in standing position with a significant reduction (p = 0.008). Mean sub-foveal ChT in PD was 258 ± 79 μm in sitting position, and 259 ± 76 μm in standing position (p = 0.887). In HC it was 244 ± 36 μm in sitting position, and 256 ± 37 μm in standing position with a significant increase (p = 0.007). The significant IOP and ChT postural changes can be considered additional hallmarks of autonomic dysfunction in MSA and further studies are needed to consider them as biomarkers in the differential diagnosis with PD.

Incidence of Intraocular Pressure Spike and Other Adverse Events after Vitreoretinal Surgery

Ophthalmology ◽  
2006 ◽  
Vol 113 (1) ◽  
pp. 42-47 ◽  
Author(s):  
Nicholas G. Anderson ◽  
Mitchell S. Fineman ◽  
Gary C. Brown
Keyword(s):  
Intraocular Pressure ◽  
Adverse Events ◽  
Vitreoretinal Surgery ◽  
Pressure Spike

scholarly journals The investigation of xylazine, detomidine, isoflurane and sevoflurane anaesthetic combinations on clinical, laboratory and cardiovascular parameters and on intraocular pressure in horses

2019 ◽  
Vol 70 (1) ◽  
pp. 1401
Author(s):  
H. EROL ◽  
M. ARICAN
Keyword(s):  
Intraocular Pressure ◽  
Clinical Laboratory ◽  
Standing Position ◽  
Pressure Measurements ◽  
Ophthalmic Surgery ◽  
Biochemical Tests ◽  
Cardiovascular Parameters ◽  
Clinical Evaluations ◽  
Mixed Breed ◽  
Rule Out

The aim of this study was to investigate the effects of anaesthetic combinations of xylazine, detomidine, sevoflurane and isoflurane on clinical, laboratory, and cardiovascular parameters as well as their effects on intraocular pressure in horses. Twenty-four mixed-breed horses (twelve male and twelve female) were used for this study. The horses were allocated into four groups (six horses in each group): XS (xylazine-sevoflurane), XI (xylazine-isoflurane), DS (detomidine-sevoflurane) and DI (detomidine-isoflurane). Clinical evaluations, hematological, biochemical tests and measurement of intraocular pressure were done before (0th), during (5th, 15th and 30th min) and at the end of anaesthesia (60th min). The detected differences were statistically evaluated. In conclusion, this study shows that the anaesthetic combinations of sevoflurane and isoflurane with xylazine and detomidine provided safe and suitable anaesthesia in horses. Our study did not reveal any statistical differences in intraocular pressure measurements. However, it should be noted that intraocular pressures were measured with the animals lying down and our results do not rule out changes in intraocular pressures in a standing position. We concluded that these anaesthesia protocols are suitable for ophthalmic surgery.

Effectivity of V4 and v4C implantable contact lenses in the treatment of complications after vitreoretinal surgery: A comparative study

2021 ◽  
Author(s):  
Jian-Hai Bai ◽  
Xiao-Xiao Ruan ◽  
Yu Zhang ◽  
Xiao-Min Ding ◽  
Xing-Zhi Yang ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Retinal Detachment ◽  
Pars Plana Vitrectomy ◽  
Contact Lenses ◽  
Vitreoretinal Surgery ◽  
Eye Drops ◽  
Arch Height ◽  
Type Group ◽  
Different Types ◽  
Pars Plana

Abstract Objective This study aims to analyze and compare the postoperative ocular parameters of two different types of implantable contact lenses (ICLs) (for retinal detachment) to provide a clinical reference for vitreoretinal surgery. Methods From March 2016 to March 2021, 24 patients (24 eyes) with rhegmatogenous retinal detachment following ICL implantation at the Eye Center of Taizhou Central Hospital were recruited. Based on the different types of ICL, they were divided into the V4 type ICL implantation group (V4 type group) and v4C type ICL implantation group (v4C type group), with 12 cases (12 eyes) in each group. Both groups were treated with pars plana vitrectomy; differences in postoperative ocular complications between the two groups were compared. Results The postoperative uncorrected and best corrected visual acuity for both groups were significantly higher than those preoperatively (P < 0.001); the same applied to the intraocular pressures (P < 0.05). Fluctuation in intraocular pressure was higher in the V4 group than in the v4C group (P < 0.05). The arch height, measured using anterior segment optical coherence tomography on the first day after operation, was lower in the V4 group than in the v4C group (P < 0.05). There was also no significant difference between the two groups before and after the operation (P > 0.05). Conclusion For patients with V4 type ICL implantation and mesh removal, stimulation of the ciliary body and the risk factors for pupil block caused by ciliary muscle spasm should be reduced as much as possible during pars plana vitrectomy. If postoperative complications such as decreased arch height and increased intraocular pressure occur, the application of compound tropicamide eye drops is an effective method to activate the pupil.

Effect of Volume Used in Sub-Tenon’s Anesthesia on Efficacy and Intraocular Pressure in Vitreoretinal Surgery

2008 ◽  
Vol 222 (6) ◽  
pp. 414-421 ◽  
Author(s):  
Hee Jin Sohn ◽  
Hyun Seung Moon ◽  
Dong Heun Nam ◽  
Hae Jung Paik
Keyword(s):  
Intraocular Pressure ◽  
Vitreoretinal Surgery

scholarly journals Changes in Day 1 Post-Operative Intraocular Pressure Following Sutureless 23-Gauge and Conventional 20-Gauge Pars Plana Vitrectomy

2013 ◽  
Vol 7 (1) ◽  
pp. 42-47 ◽  
Author(s):  
Emily Gosse ◽  
Richard Newsom ◽  
Peter Hall ◽  
Jonathan Lochhead
Keyword(s):  
Intraocular Pressure ◽  
Gauge Group ◽  
Vitreoretinal Surgery ◽  
Retrospective Case ◽  
Gauge Groups ◽  
Sutureless Technique ◽  
Transconjunctival Sutureless Vitrectomy ◽  
23 Gauge ◽  
Sutureless Vitrectomy ◽  
Air Exchange

Background/Aims: The benefits associated with transconjunctival sutureless vitrectomy techniques are continuing to be defined. The purpose of this study was to compare the incidence of extreme changes in day 1 intraocular pressure (IOP) following 23-gauge sutureless vitrectomy compared with conventional 20-gauge vitrectomy. Methods: Fifty consecutive 23-gauge and 50 consecutive 20-gauge cases were included; eyes with a history of previous vitreoretinal surgery were excluded. 23-gauge surgery was completed with passive fluid air exchange where no long acting tamponade was indicated. The surgery remained sutureless unless a leak was visible at the end of the procedure. Data were collected by retrospective case note review. Statistical analysis was carried out using Fisher’s exact and chi-square tests. Results: Twenty-two percent (11/50) of 23-gauge vitrectomies required suturing of one or more ports. On the first post-operative day hypotony (IOP<5mmHg) occurred in 1/50 eyes in the 20- and 23-gauge groups. Raised pressure (IOP>21mmHg) occurred in 30% (15/50) of eyes in the 20-gauge group and 8% (4/50) of eyes in the 23-gauge group; IOP>30mmHg only occurred in the 20-gauge group (3/50). Conclusion: Fluid air exchange following 23-gauge vitrectomy is associated with very low risk of day 1 hypotony. This predominantly sutureless technique appears to reduce the incidence and magnitude of early post-operative IOP elevation compared with conventional 20-gauge vitrectomy.

Temporary Silicone Oil Tamponade and Intraocular Pressure: An 11-Year Retrospective Study

1996 ◽  
Vol 6 (1) ◽  
pp. 74-80 ◽  
Author(s):  
M. Gonvers ◽  
R. Andenmatten
Keyword(s):  
Intraocular Pressure ◽  
Retrospective Study ◽  
Ocular Hypertension ◽  
Silicone Oil ◽  
Beta Blockers ◽  
Vitreoretinal Surgery ◽  
Satisfactory Explanation ◽  
Fellow Eye ◽  
Silicone Oil Tamponade ◽  
Big Bubble

Background A retrospective study was conducted to evaluate the risk of increased intraocular pressure (IOP) following a temporary silicone oil (SO) tamponade and to study some parameters possibly involved in this hypertension. Methods Forty-four patients with retinal detachment complicated by proliferative vitreoretinopathy (PVR) were treated by vitreoretinal surgery and SO tamponade. One to 11 years after SO removal, they underwent full ophthalmic examination. All these patients had a healthy, non-operated, normotensive fellow eye. Results Six (14%) of 44 eyes had IOP higher than 20 mmHg. Five other eyes (11%) had their IOP controlled by beta blockers. Phakic and pseudophakic eyes had a very limited tendency to develop ocular hypertension and anyway responded well to beta blockers. Residual SO droplets in the eye after removal of the big bubble of SO disappeared exponentially with a mean disappearance time of three years. Eyes with residual SO were no more prone to ocular hypertension than those without (p>0.50). No association was found between IOP and duration of SO tamponade (r=0.13) or between IOP and flare (r=0.14). Conclusion This study suggests that the risk of developing ocular hypertension after a temporary SO tamponade is moderate. No satisfactory explanation could be found for this increase of IOP.

scholarly journals Intraocular Pressure Measurements in Standing Position with a Rebound Tonometer

Medicina ◽  
2019 ◽  
Vol 55 (10) ◽  
pp. 701 ◽  
Author(s):  
De Bernardo ◽  
Borrelli ◽  
Cembalo ◽  
Rosa
Keyword(s):  
Intraocular Pressure ◽  
Supine Position ◽  
Central Corneal Thickness ◽  
Body Position ◽  
Corneal Thickness ◽  
Standing Position ◽  
Pressure Measurements ◽  
Healthy Individuals ◽  
Lying Down ◽  
Axial Eye Length

Background and Objectives: It has been established that body position can play an important role in intraocular pressure (IOP) fluctuation. IOP has been previously shown to increase significantly when lying down, relative to sitting; this type of investigation has not been extensively reported for the standing (ST) position. Therefore, this study aims to look for eventual significant IOP changes while ST, sitting, and lying down. Materials and Methods: An Icare PRO was used to measure the IOP of 120 eyes of 60 healthy individuals, with age ranging from 21 to 55 years (mean 29.22 ± 9.12 years), in sitting, supine and ST positions; IOP was measured again, 5 minutes after standing (ST-5m). Results: Mean IOP difference between sitting and ST position was 0.39 ± 1.93 mmHg (95% CI: 0.04 to 0.74 mmHg) (p = 0.027); between sitting and ST-5m, it was −0.48 ± 1.79 mmHg (95% CI: −0.8 to −0.16 mmHg) (p = 0.004); between the sitting and supine position, it was −1.16±1.9 mmHg (95% CI: −1.5 to −0.82 mmHg) (p < 0.001); between the supine and ST position, it was 1.55 ± 2.04 mmHg (95% CI: 1.18 to 1.92 mmHg) (p < 0.001); between supine and ST-5m, it was 0.68 ± 1.87 mmHg (95% CI: 0.34 to 1.02 mmHg) (p < 0.001); and between ST-5m and ST, it was 0.94 ± 1.95 mmHg (95% CI: 0.58 to 1.29 mmHg) (p < 0.001). Mean axial eye length was 24.45 mm (95% CI: 24.22 to 24.69 mm), and mean central corneal thickness was 535.30 μm (95% CI: 529.44 to 541.19 μm). Conclusion: Increased IOP in the ST-5m position suggests that IOP measurements should be performed in this position too. The detection of higher IOP values in the ST-5m position than in the sitting one, may explain the presence of glaucoma damage or progression in apparently normal-tension or compensated patients.

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