Trials / Completed

CompletedNCT07255885

CRYSTALSIGHT: ''Cohort 1.5" Clinical Investigation Study With OCCUTRACK and Tan Tock Seng Eye Clinic to Further Develop Remote Monitoring of Maculopathy at Home Using Artificial Intelligence for Eye Tracking

Status: Completed
Phase: —
Study type: Observational
Enrollment: 20 (actual)

Sponsor: Tan Tock Seng Hospital · Academic / Other
Sex: All
Age: 21 Years – 100 Years
Healthy volunteers: Not accepted

Summary

The development of a next-generation 'CRYSTALSIGHT' solution using combinations of a novel and cost-effective eye-tracking system with artificial intelligence-based eye-tracking algorithms that detect macular abnormalities and enable clinicians to review and monitor the prognosis of patients via a web platform through the following deliverables. 1. Evaluate and improve a home-monitoring regimen involving the self-tests of the CRYSTALSIGHT gaze-tracking system 2. To demonstrate that CRYSTALSIGHT has the same or superior gaze-tracking capacities as Tobii. 3. Evaluate the CRYSTALSIGHT device for its functionality and ease of use as a qualitative measurement tool for patients. 4. Develop the Design History File (DHF) for regulatory filing requirements. 2\. This study will improve on the existing gaze-based scoring methodology for disease activity monitoring over time (delta-change) by quantitatively measuring saccadic speed, pursuit and micro-saccades.

Detailed description

Macula degeneration is more prevalent with ageing and can result in blurred or distorted vision, often accompanied by a dark patch blocking the center of the visual field. In the management of age-related macular degeneration (AMD), patients are required to attend regular check-ups at the specialist eye clinic by the clinician to monitor if their disease. The eye examinations that patients undergo during these clinic visits which may include fundoscopy and optical coherence tomography. A preventive treatment for exudative or wet AMD is the administration of an intravitreal injection of an anti-vascular endothelial growth factor (anti-VEGF) at these regular clinic sessions. Although anti-vascular endothelial growth factor (VEGF) injections are an effective treatment for many patients with Wet-AMD, there are several unmet needs in treatment of AMD and none of them cures the disease or reverses its course. Some patients do not respond to VEGF injections. There are no standardized treatment schedules, there is a large treatment burden, and visual loss continues over time. Additionally, the main drawback of anti-VEGF therapy is its high cost, which suppose a significant burden on health systems, and often makes such a regimen unaffordable in clinical practice. There is no treatment for GA. Therefore, the prevention of advanced disease like Wet-AMD and finding new and effective treatments remain a significant challenge. Advances in imaging and genetics and molecular technologies have led to the identification of new risk factors for disease progression, but not all have been evaluated in comprehensive prediction models. Perhaps, comprehensive prediction models could lead to the development of tailored, individualized therapy and improve the personalised healthcare. As such, the application of this next-generation OCCUTRACK Technology to develop a comprehensive risk score algorithm and to estimate the risk scores to identify individuals at high risk for disease progression to advanced stages would result in earlier intervention and reduced burden of visual loss due to AMD. This approach could enable the tailored individualized Anti-VEGF Therapy to promote personalized medicine and improve the quality of life of patients with Wet-AMD. A Proof-of-Concept (POC) was completed by TTSH clinician and AStar-I2R scientist to co-develop and patent a software - Automated Vision Assessment and Impairment Detection through Gaze Analysis (AVIGA). AVIGA is now referred to as "CRYSTALSIGHT" as part of the commercialization branding. A local medical incubator, Trendlines Medical Singapore, has licensed it from the research party. This led to the spin-off of a new company - Occutrack Pte Ltd to continue the collaboration with TTSH, focusing on the commercialization of the CRYSTALSIGHT. AVIGA previously used a costly commercial tobii gaze tracker that could potentially limit consumer adoption, the CRYSTALSIGHT system was designed to mitigate costs by incorporating an AI-augmented video camera with gaze tracking algorithms designed to provide a comprehensive assessment of a patient's vision. With this non-invasive technology, retinal specialists can monitor the real time progression and prognosis of patients with AMD while they are in the comfort of their own home without the need for manual or skilled intervention and expensive equipment. This project proposal is to evaluate the performance and accuracy of the CRYSTALSIGHT technology as a tool for determining macular disease activity.

Conditions

Interventions

Type	Name	Description
DEVICE	CRYSTALSIGHT Test	Eye gaze tracking tests will be automated, and patients will only need to follow through with the stimulus/image shown without physical contact with the eye gaze tracker using CRYSTALSIGHT and Tobii. A series of stimulus dots in the form of a pursuit (moving stimulus) or saccade (fixed stimulus and fixed speed) will be presented on the screen and the user under test (UAT) will need to look at the targets presented. The test is similar to Microperimetry and Humphrey's visual field test. A score will be generated at the end of the test. Research Procedure: 1. CRYSTALSIGHT 2. Tobii Subjects perform the CRYSTALSIGHT test monocularly and pursue a pre-determined target moving in a customized waveform across the computer screen. The trail of the gaze points generated by the subject following the target is simultaneously recorded and stored. Eye dilation will not be required for the purpose of this research study as fundoscopy nor OCT imaging will not be performed.

Timeline

Start date: 2025-05-08
Primary completion: 2025-05-31
Completion: 2025-12-31
First posted: 2025-12-01
Last updated: 2026-01-08

Locations

1 site across 1 country: Singapore

Source: ClinicalTrials.gov record NCT07255885. Inclusion in this directory is not an endorsement.