A pilot study using retinal image analysis to assess cognitive health risk of dog owners

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2500108659

Enrollment

Unknown

Registered

2025-09-03

Start date

2025-09-15

Completion date

Unknown

Last updated

2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cognitive health risk

Interventions

Dog owner:N/A

Non Dog owner:N/A

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: • Age >=18 • Willing to sign the informed consent • Willing to comply with procedures required in the protocol • Group 1 - Dog owner: Keeping a dog for more than 12 months • Group 2 – Non Dog owner

Exclusion criteria

Exclusion criteria: • Poor retinal images quality that cannot be used in the analysis • Subjects with other eye diseases are unsuitable for retinal imaging, such as severe cataracts, glaucoma, atretopsia, and corneal plague. • Subjects are distressed with a flashlight or have experience with photosensitive seizures. • Unwillingness or inability to comply with procedures required in the protocol

Design outcomes

Primary

Measure	Time frame
retinal vessels parameters;	—

Countries

China

Contacts

Public ContactProf. ZEE Chung-ying, Benny

The Chinese University of Hong Kong

bzee@cuhk.edu.hk+852 2252 8865

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026