VisuALL ANALYZER

 

The Olleyes VisuALL  Analyzer (vFA) is a virtual reality visual function platform designed to monitor the retinal sensitivity in patients with eye diseases. This mobile device performs Standard Automated Perimetry and other psychophysical tests, including assessment of visual acuity, color vision, contrast sensitivity, pupillometry, and extraocular motility.

The VisuALL is a portable automated perimeter that uses a virtual interface that has the potential to provide an immersive testing experience for patients. The VisuALL has two displays (one for each eye), allowing it to test both eyes simultaneously but separately with a similar test duration to other perimeters. 

The VisuALL Virtual Reality Software suite works with the seamless synergy of three elements: the WebApp, the Cloud, and Olleyes Approved VR Headset.

Annie, a Virtual Assistant, is designed to boost efficiency, monitor patients, explain the testing process to patients, and organize the test data for easy reading.

The headset runs the VisuALL Patient Testing Application (PTA), which was written in Unity (a cross-platform gaming engine). By leveraging this engine, VisuALL can create a fully immersive and self-contained environment in order to perform self-directed, interactive training tutorials for the patient and then proceed to the VF test. 

Another key component of the VisuALL PTA is the proprietary thresholding algorithms, which implement complex decision trees to determine most efficiently what the patient's threshold for light detection is at each location. 

The VisuALL uses Goldmann size III test stimuli in each VF protocol and tests both eyes simultaneously. 

The vFA has both strong short-term and long-term test-retest reliability in addition to high correlation with HFA in a standard clinical setting.

After testing is complete, the software generates a report that includes the patient's name, date of birth, gender, test ID, examination date, test time, and test strategy. It also lists the fixation losses, false positives, and false negatives. Below is a plot of the threshold values for each of the 50 points tested, and a grayscale representation of the threshold values.

COMPANY WEBSITE: https://olleyes.com/

OMNI SURGICAL SYSTEM

 

The OMNI Surgical System from Sight Sciences is an implant-free, minimally invasive technology, despite being a comprehensive procedure, indicated for canaloplasty (microcatheterization and transluminal visco-dilation of Schlemm’s canal) followed by trabeculotomy (cutting of trabecular meshwork) to reduce intraocular pressure in adult patients with or without cataract surgery, for mild, moderate, and advanced primary open-angle glaucoma (POAG).

The OMNI is a handheld instrument with a hollow tip through which ophthalmic viscosurgical device (OVD) can be injected to perform visco-dilation and through which a microcatheter can be deployed to perform trabeculotomy. Other features of the device include a gear wheel for advancement and withdrawal of the microcatheter, a port for loading OVD into the device, and a reservoir to hold it.

Under gonioscopic view, the handpiece tip is introduced into the OVD-filled anterior chamber through a temporal corneal incision and advanced to the nasal angle.

The tip then engages and passes through trabecular meshwork, and the microcatheter is deployed via the cannula into and through 180° of Schlemm’s canal.

The microcatheter is then retracted slowly as a fixed volume of OVD is injected to visco-dilate the canal and collector channels.

The procedure is then repeated on the remaining 180° of the canal.

To perform the trabeculotomy, the same catheter is advanced once again through 180° of Schlemm’s canal and withdrawn using a cheese-wire technique to unroof the canal; this process can be repeated on the remaining 180° of the canal.

Standard anti-inflammatory (dexamethasone) and anti-microbial (ofloxacin) therapy are prescribed postoperatively.

Newer modifications include a cannula tip featuring a new profile that allows for gentle and precise access to Schlemm’s canal, while still enabling a complete 360-degree catheterization associated with the OMNI procedure.

New enhancements enable surgeons to more easily rotate and position the cannula tip within Schlemm’s canal using precise finger rotations rather than wrist adjustments.

COMPANY WEBSITE: https://omnisurgical.com/