Visual Field Endpoints Based on Subgroups of Points May Be Useful in Glaucoma Clinical Trials: A Study With the Humphrey Field Analyzer and Compass Perimeter
Precis:
Visual field (VF) endpoints based on average deviation of specific subsets of points rather than all points may offer a more homogeneous data set without necessarily worsening test-retest variability and so may be useful in clinical trials.
Purpose:
The purpose of this study was to characterize the outcome measures encompassing particular subsets of VF points and compare them as obtained with Humphrey [Humphrey visual field analyser (HVF)] and Compass perimeters.
Methods:
Thirty patients with imaging-based glaucomatous neuropathy performed a pair of 24-2 tests with each of 2 perimeters. Nonweighte...
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Visual Field Assessment: Original Studies Source Type: research
A Novel Approach to Measuring Binocular Visual Fields in Glaucoma
Precis:
Combined average visual field index (VFI) is a simple, novel tool for binocular visual field which agrees with the existing binocular integrated visual field (IVF) model, as well as patient reported activity limitation in glaucoma.
Purpose:
The aim was to determine the correlation between novel models of binocular visual field with the existing IVF and glaucoma activity limitation (GAL-9).
Materials and Methods:
IVFs were calculated from the monocular visual fields of 58 patients with primary glaucoma and the novel binocular visual field models termed binocular summation visual field index (BiSumV...
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Visual Field Assessment: Original Studies Source Type: research
Comparison of Superior and Inferior Visual Field Asymmetry Between Normal-tension and High-tension Glaucoma
Conclusions:
The superior hemifield was more severely affected than the inferior hemifield in NTG and HTG. As the severity of glaucoma increased, so did the asymmetry in both groups, with NTG showing more profound asymmetric VF defects in the central and paracentral areas whereas HTG did not. Different VF patterns suggest differing pathologic mechanisms and possible need for different therapeutic strategies in NTG and HTG. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Visual Field Assessment: Original Studies Source Type: research
Intraocular Pressure According to Eye Gaze by iCare Rebound Tonometry in Normal Participants and Glaucoma Patients
Precis:
We investigated changes of intraocular pressure (IOP) according to eye gaze. IOP was significantly elevated in adduction, abduction, and supraduction. However, there was no significant difference between glaucoma and control groups.
Purpose:
We assessed changes in IOP according to eye gaze and identified their correlations with various risk factors of glaucoma.
Patients and Methods:
In this prospective observational study that included 56 glaucoma patients and 34 healthy participants, we measured IOP in the primary position with a Goldmann applanation tonometry and rebound tonometer. Then, this IO...
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Intraocular Pressure Tools and Tests: Original Studies Source Type: research
Reliability of iCare ic100 Rebound Tonometry and Agreement With Goldmann Applanation Tonometry in Healthy and Post-myopic LASIK Patients
Conclusions:
Rebound tonometry offers good or excellent clinical reliability in both healthy and post-myopic LASIK patients. This article highlights the efficacy of iCare ic100 rebound tonometry as a reliable tool for the measurement of IOP and the management of glaucoma in healthy patients and patients undergoing myopic LASIK surgery. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Intraocular Pressure Tools and Tests: Original Studies Source Type: research
Assessing the Reliability of Intraocular Pressure Measurements Using Rebound Tonometry
Conclusions:
The RT’s lower measurement variability and good interoperator and interdevice reproducibility suggest that it can characterize IOP changes over time more robustly than Goldmann tonometry, aiding clinicians in assessing the effectiveness of glaucoma therapy and the consistency of IOP control. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - August 1, 2021 Category: Opthalmology Tags: Intraocular Pressure Tools and Tests: Original Studies Source Type: research
Hemorrhagic Descemet’s Membrane Detachment in Nonpenetrating Glaucoma Surgery
Conclusion:
Hemorrhagic DM detachment is a rare but potential vision-threatening complication in glaucoma surgery. Different mechanisms may cause the bleeding and there are several techniques available to approach this complication. Pre-Descemet hematoma should be drained to avoid permanent corneal stain and air/gas tamponade may help to prevent recurrences. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Case Reports Source Type: research
Trans-conjunctival Erosion of a Novel SIBS Microshunt After Revision Surgery Using Mitomycin C
This article describes the first reported case of trans-conjunctival Preserflo microshunt erosion after revision surgery augmented with mitomycin C. Recommendations to avoid this complication include removal of original microshunt and limiting secondary application of mitomycin C. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Case Reports Source Type: research
Migration of the XEN45 Gel Stent into the Anterior Chamber Managed by Trimming the Implant
We report a case of migration of the XEN45 gel stent into the anterior chamber successfully treated with trimming of the implant. To the best of our knowledge, this management strategy for migration of the implant has not previously been reported. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Case Reports Source Type: research
McCannel Suture Technique Resolves Persistent Dysphotopsia Following Laser Peripheral Iridotomy in Phakic Eyes
A 57-year-old woman presented with photophobia and complaint of a persistent white light in the inferior field of her left eye for 18 months following laser peripheral iridotomy both eyes. In primary gaze, the upper lid margin was noted to bisect the iridotomy at 2 o’clock left eye (OS). She relates that the light moves with her eyelid OS only and resolves by lifting the lid. A 54-year-old male presented with complaint of seeing 2 horizontal lines in his field of vision immediately following laser iridotomy OS that have persisted for a duration of 7 years. He notes they are constant and resolve by lifting up the eyelid. ...
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Case Reports Source Type: research
Rescue of Failed XEN-45 Gel Implant by Nd:YAG Shock Wave to Anterior Chamber Tip to Dislodge Hidden Intraluminal Occlusion
Conclusion:
Nd:YAG laser revision of hidden blockage of a XEN-45 gel implant with periluminal anterior chamber tip shockwave treatment can disperse invisible intraluminal cellular debris and improve flow in a failing XEN-45 microstent, especially when distal fibrosis is not excessive. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Original Studies Source Type: research
Intraluminal Stent Optimization for the Baerveldt Glaucoma Implant: An Experimental Study
Conclusions:
In our laboratory model, the optimal stent diameter to reduce aqueous flow to a level approaching the normal aqueous production is at least 250 µm. Secondarily, commercially available 3-0 monofilament nylon suture materials showed variable diameters within the United States Pharmacopeia diameter range. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Original Studies Source Type: research
Surgical Results of Ahmed Glaucoma Valve Implantation in One-chamber Eyes
Precis:
Ahmed glaucoma valve (AGV) implantation in eyes with damaged iris-lens diaphragms (“1-chamber” eyes) resulted in mean intraocular pressure (IOP) and antiglaucoma medications decreases of 66% and 59% (P (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Original Studies Source Type: research
Microinvasive Glaucoma Surgery in US Ophthalmology Residency: Surgical Case Log Cross-sectional Analysis and Proposal for New Glaucoma Procedure Classification
Precis:
A cross-sectional sample of the US ophthalmology residency graduating class of 2018 revealed that 18.4% of residents logged (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Original Studies Source Type: research
Standalone iStent Trabecular Micro-bypass Glaucoma Surgery: A Systematic Review and Meta-Analysis
Conclusions:
The results from these studies support the independent effect of the iStent trabecular bypass devices on IOP and medication burden over a duration of follow-up of up to 5 years. (Source: Journal of Glaucoma)
Source: Journal of Glaucoma - July 1, 2021 Category: Opthalmology Tags: Advances in Glaucoma Surgery: Original Studies Source Type: research
