Intraocular Pressure Versus Optic Nerve Sheath Diameter

Rajiv Gandhi Cancer Institute & Research Center, India

Status: Unknown

Conditions: Optic Nerve Sheath Diameter; Intraocular Pressure

Treatments: Procedure: Schiotz tonometer for Intraocular Pressure

Study type: Interventional

Funder types: Other

Identifiers

NCT02697825

RajivGCIRC1

Details and patient eligibility

About

This study involves observing and comparing Intraocular Pressure and Optic Nerve Sheath Diameter in steep trendelenburg position. Both observations will be done in same patient over the surgical duration.

Full description

Steep trendelenburg position is required for various robotic surgical procedures like hysterectomy, radical prostatectomy etc. Both Intraocular Pressure and Optic Nerve Sheath Diameter are found to get increased while in this position.

Intraocular Pressure will be measured by schiotz tonometer over an hourly interval whereas Optic nerve sheath diameter will be measured with use of ultrasound using a probe of 7.5 Mega hertz. Both values will be measured in both the eyes and will be compared statistically to find any correlation which may exist between the two.

Enrollment: 100 estimated patients

Sex: All

Ages: 40 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• robotic surgeries
• surgical duration upto 4 hours
• american society of anaesthesiologists 1 to 3

Exclusion criteria

• any history of opthalmic intervention
• patient suffering from glaucoma
• patients taking any diuretics for cardiac problems

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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100 participants in 1 patient group

changes in eye

Other group

Description:

Changes in both intraocular pressure and optic nerve sheath diameter will be correlated in robotic surgeries to find out any statistical relation existing between two.

Treatment:

Procedure: Schiotz tonometer for Intraocular Pressure