The Calibration of the Corneal Light Reflex to Estimate the Degree of an Angle of Deviation

The correlation between the corneal light reflex displacement from a digital photograph and the magnitude of deviation: prospective, diagnostic test

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

TCTR

Registry ID

TCTR20140106002

Enrollment

Registered

2014-01-06

Start date

2012-07-01

Completion date

Unknown

Last updated

2026-03-30

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

Conditions

angle of deviation corneal light reflex Hirschberg photograph angle deviation

Interventions

Corneal light reflex photographs were recorded when the subject fixed in turn each of fixing targets equally spaced along the screen (26 and 23 fixing targets at 1m and 4m screen respectively).

No Intervention No treatment

photographs

Eligibility

Sex/Gender

All

Age

16 Years to 40 Years

Inclusion criteria

Inclusion criteria: The subjects were older than 16 years old with normal eye examination and volunteered to participate in this study.

Exclusion criteria

Exclusion criteria: abnormal eye examination

Design outcomes

Primary

Measure	Time frame
corneal light reflex deviation at 12 months after end of the intervention millimeter	—

Secondary

Measure	Time frame
angle of deviation at 12 months after end of the intervention diopter	—

Countries

Thailand

Contacts

Public Contactsupaporn tengtrisorn

faculty of medicine

tsupapor@medicine.psu.ac.th0815424239

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Apr 4, 2026