Intraocular Pressure Versus Optic Nerve Sheath Diameter

Not Applicable

• Conditions: Intraocular Pressure; Optic Nerve Sheath Diameter
• Interventions: Procedure: Schiotz tonometer for Intraocular Pressure

• Registration Number: NCT02697825
• Lead Sponsor: Rajiv Gandhi Cancer Institute & Research Center, India

Brief Summary

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.

Detailed 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.

Study Timeline

• Study Start: 2015-09
• Status Verified: 2016-02
• Study First Submitted: 2016-02-20
• Study First Submitted QC: 2016-02-26
• Last Update Submitted: 2016-02-26
• Primary Completion: 2016-03
• Study First Posted: 2016-03-03
• Last Update Posted: 2016-03-03
• Study Completion: 2016-04

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 100

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
changes in eye	Schiotz tonometer for Intraocular Pressure	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.

Primary Outcome Measures

Name	Time	Method
correlation between rise of intraocular pressure and optic nerve sheath diameter	9 months	Intraocular pressure will be measured using schiotz tonometer whereas optic nerve sheath diameter will be assessed using ultrasound in same patient at same intervals. This will give us both the values of intraocular pressure and optic nerve sheath diameter at same time which as per previous studies increases and are statistically significant. After compilation of results it will be analyzed that whether both values increases in a correlated manner or not which will give us our results that whether increase of one value can tell the increase of other value.

Trial Locations

Locations (1)

Rajiv Gandhi Cancer Institute & Research Centre; 🇮🇳 New Delhi, Delhi, India