Comparing the Effect of the Water Drinking Test on Intraocular Pressure

Wills Eye

Status: Completed

Conditions: Glaucoma

Treatments: Procedure: Water Drinking Test

Study type: Observational

Funder types: Other

Identifiers

NCT02001155

WEH - 10-989E

Details and patient eligibility

About

A test that was common in the 1960's and was used to detect primary open angle glaucoma was the water drinking test (patients drank 1 quart of water to stress the fluid drainage mechanism of the eyes. Intraocular pressure was then measured over the next hour). Recently this test has been demonstrated as a predictor of peak eye pressure during the day. The purpose of this study is to compare the results of the water drinking test between eyes that have undergone trabeculectomy and eyes that have undergone tube shunt surgery.

Enrollment: 40 patients

Sex: All

Ages: 21 to 90 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• prior trabeculectomy or tube shunt for the treatment of glaucoma
• age 21-90 years

Exclusion criteria

• inability to give informed consent
• current ocular infection
• more than 1 prior trabeculectomy, or more than 1 prior tube shunt
• previous refractive surgery
• pregnant women
• heart failure
• renal failure or uncontrolled urine retention
• corneal abnormalities preventing reliable IOP measurement

Trial design

40 participants in 2 patient groups

Trabeculectomy

Description:

Individuals in this group will have undergone a trabeculectomy for the treatment of glaucoma.

Treatment:

Procedure: Water Drinking Test

Tube Shunt

Description:

Individuals in this group will have undergone a tube shunt for the treatment of glaucoma.

Treatment:

Procedure: Water Drinking Test