The pilot study of alteration of retinal nerve fiber layer thickness in Thai patients whom underwent spinal surgery by optical coherence tomography (OCT)

Alteration of Retinal Nerve Fiber Layer Thickness and retinal ganglion cell in Thai Patients with Spinal Surgery in prone position.

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20231031002

Enrollment

Registered

2023-10-31

Start date

2013-11-11

Completion date

Unknown

Last updated

2026-08-03

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

Conditions

Patients undergo spine surgery in prone position. spine surgery, prone

Interventions

Patients undergo spine surgery in prone position.

Basic Science

Prone patient

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Patients with spinal disease whom had an appointment for spinal surgery at Siriraj hospital, 2. No prior ocular disease or conditions associated with optic nerve (i.e. glaucoma, increased intracranial pressure, diabetic papillopathy), 3. Age over 18 years old.

Exclusion criteria

Exclusion criteria: 1. The patients who have disabilities that could not be examined by the investigator. 2. The patients loss follow-up.

Design outcomes

Primary

Measure	Time frame
Nerve fiber layer thickness at optic disc at 6 weeks and 3 months post-operative Cirrus SD-OCT ,the thickness of retinal ganglion cell 6 weeks, 3 months micrometer/OCT	—

Secondary

Measure	Time frame
N/A N/A N/A	—

Countries

Thailand

Contacts

Public ContactNiphon Chirapapaisan

Faculty of Medicine Siriraj Hospital, Mahidol University, Mahidol University

niphon.chi@mahidol.ac.th0896685735

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026