Set up for in-Vivo Measurement of Dynamic Intraocular Pressure (IOP)
NCT ID: NCT00856141
Last Updated: 2009-03-05
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
20 participants
INTERVENTIONAL
2006-01-31
2006-05-31
Brief Summary
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Conventional systems for measuring IOP generate an isolated graph of continuous pressure recording. Interpretation of the IOP fluctuations from these graphs requires a two step superimposition approach to characterize the IOP changes.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
DIAGNOSTIC
NONE
Study Groups
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1. High fluidic parameters
Bottle height varied from 90-110cms, fixed aspiration flow rate 40cc/min, vacuum upto 650mmHg depending on the grade of cataract
phacoemulsifcation
A sensor (Blumenthal cannula) connected to a transducer, a signal amplifier, an IOP recording device, and a display unit
2. Low fluidic parameters
Bottle height varied from 70-90cms, fixed aspiration flow rate of 25cc/min, vacuum upto 400mmHg, depending on the grade of cataract
phacoemulsifcation
A sensor (Blumenthal cannula) connected to a transducer, a signal amplifier, an IOP recording device, and a display unit
Interventions
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phacoemulsifcation
A sensor (Blumenthal cannula) connected to a transducer, a signal amplifier, an IOP recording device, and a display unit
phacoemulsifcation
A sensor (Blumenthal cannula) connected to a transducer, a signal amplifier, an IOP recording device, and a display unit
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Cataracts from grade 1 to 3
Exclusion Criteria
* diabetic retinopathy,
* retinal vascular disease,
* high myopia (defined as AL \> 25mm),
* uveitis,
* previous ocular trauma or surgery
50 Years
70 Years
ALL
Yes
Sponsors
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Iladevi Cataract and IOL Research Center
OTHER
Responsible Party
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ICIRC
Principal Investigators
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Abhay R Vasavada, FRCS
Role: PRINCIPAL_INVESTIGATOR
Iladevi Cataract and IOL Research Center
Locations
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Raghudeep Eye Clinic
Ahmedabad, Gujarat, India
Countries
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References
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Grinbaum A, Blumenthal M, Assia E. Comparison of intraocular pressure profiles during cataract surgery by phacoemulsification and extracapsular cataract extraction. Ophthalmic Surg Lasers Imaging. 2003 May-Jun;34(3):182-6.
Georgescu D, Payne M, Olson RJ. Objective measurement of postocclusion surge during phacoemulsification in human eye-bank eyes. Am J Ophthalmol. 2007 Mar;143(3):437-40. doi: 10.1016/j.ajo.2006.11.017. Epub 2006 Dec 18.
Khng C, Packer M, Fine IH, Hoffman RS, Moreira FB. Intraocular pressure during phacoemulsification. J Cataract Refract Surg. 2006 Feb;32(2):301-8. doi: 10.1016/j.jcrs.2005.08.062.
Moorhead LC, Gardner TW, Lambert HM, O'Malley RE, Willis AW, Meharg LS, Moorhead WD. Dynamic intraocular pressure measurements during vitrectomy. Arch Ophthalmol. 2005 Nov;123(11):1514-23. doi: 10.1001/archopht.123.11.1514.
Joos KM, Kay MD, Pillunat LE, Harris A, Gendron EK, Feuer WJ, Steinwand BE. Effect of acute intraocular pressure changes on short posterior ciliary artery haemodynamics. Br J Ophthalmol. 1999 Jan;83(1):33-8. doi: 10.1136/bjo.83.1.33.
Other Identifiers
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IOP set up
Identifier Type: -
Identifier Source: secondary_id
IOP fluctuations
Identifier Type: -
Identifier Source: secondary_id
005-036
Identifier Type: -
Identifier Source: org_study_id
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