Changes in Intraocular Pressure Before, During, and After Playing Thai Traditional, Thai Folk, and Western Wind Instruments

Comparison of intraocular pressure in Thai traditional, Thai folk, and Western wind instrument players

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20211217001

Enrollment

Registered

2021-12-17

Start date

2022-08-06

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

High intraocular pressure in wind instrument players Intraocular pressure Ocular hypertension

Interventions

Participants who play Thai traditional wind instrument

Khlui.,Participants who play Thai folk wind instrument

Khaen.,Participants who play Western wind instrument

Saxophone and trumpet.

Diagnostic,Diagnostic,Diagnostic

Thai traditional (TT),Thai folk (TF),Western (WT)

Eligibility

Sex/Gender

All

Age

18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Participants who can play Thai or Western wind instruments correctly 2. Age 18-60 years old 3. Able to play instrument in every note for at least 2 minutes 4. Given informed consent

Exclusion criteria

Exclusion criteria: 1. History of glaucoma 2. History of ocular hypertension or found this condition at baseline IOP measurement 3. History of uveitis or endophthalmitis 4. History of corneal ulcer 5. History of retinal detachment 6. Hypertension 7. Asthma 8. Cardiac disease

Design outcomes

Primary

Measure	Time frame
IOP during playing instrument RE: at 36-42 seconds, LE: at 100-107 seconds after begin to play the instrument Tonopen	—

Secondary

Measure	Time frame
IOP before and after playing instrument at 90 seconds after stop playing instrument Tonopen,Trend of IOP change after stop playing instrument at 30 and 90 seconds after stop playing instrument Tonopen	—

Countries

Thailand

Contacts

Public ContactSukhumal Thanapaisal

Khon Kaen University

sukhumal54303@gmail.com0862421923

Outcome results

None listed

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