Ocular Pulse Amplitude Before and After Cataract Surgery

Purpose: To investigate the impact of cataract surgery on the association of the ocular pulse amplitude (OPA) and intraocular pressure (IOP) with respect to the interpretation of OPA as an estimate of ocular blood flow. Methods: Twenty-four patients with cataract were included in a clinical study. O...

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Published in:Current eye research 2012-02, Vol.37 (2), p.115-119
Main Authors: Plange, Niklas, Rennings, Corinna, Herr, Anne, Weber, Anke, Roessler, Gernot F., Mazinani, Babac E., Kaup, Marion, Remky, Andreas
Format: Article
Language:English
Subjects:
Aged
Blood Pressure - physiology
Cataract surgery
Dynamic contour tonometry
Eye - blood supply
Female
Heart Rate - physiology
Humans
Intraocular pressure
Intraocular Pressure - physiology
Lens Implantation, Intraocular
Male
Ocular blood flow
Ocular pulse amplitude
Phacoemulsification
Tonometry, Ocular
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container_end_page 119
container_issue 2
container_start_page 115
container_title Current eye research
container_volume 37
creator Plange, Niklas
Rennings, Corinna
Herr, Anne
Weber, Anke
Roessler, Gernot F.
Mazinani, Babac E.
Kaup, Marion
Remky, Andreas
description Purpose: To investigate the impact of cataract surgery on the association of the ocular pulse amplitude (OPA) and intraocular pressure (IOP) with respect to the interpretation of OPA as an estimate of ocular blood flow. Methods: Twenty-four patients with cataract were included in a clinical study. OPA was measured using dynamic contour tonometry (DCT, Pascal®, SMT Swiss Microtechnology AG, Switzerland). IOP was measured by means of Goldmann applanation tonometry (IOP GAT) and DCT (IOP DCT). All measurements were performed before and one day after cataract surgery. Results: At baseline, OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.82, P 
doi_str_mv 10.3109/02713683.2011.626910
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Methods: Twenty-four patients with cataract were included in a clinical study. OPA was measured using dynamic contour tonometry (DCT, Pascal®, SMT Swiss Microtechnology AG, Switzerland). IOP was measured by means of Goldmann applanation tonometry (IOP GAT) and DCT (IOP DCT). All measurements were performed before and one day after cataract surgery. Results: At baseline, OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.82, P &lt; 0.0001), but not to age or axial length. Postoperative OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.65, P = 0.0004). In 17 patients, IOP GAT decreased after surgery (IOP DCT n = 14), whereas an increase was apparent in seven patients (IOP DCT n = 10). The mean absolute deviation of IOP GAT pre- to post-surgery was 4.54 mmHg ± 2.47 (range 1-10 mmHg) and 5.4 mmHg ± 3.2 (range 1.1-13.1 mmHg) for IOP DCT. The changes of OPA were significantly correlated to changes in IOP GAT (r = 0.48, P = 0.017) and IOP DCT (r = 0.60, P = 0.001). IOP GAT and IOP DCT changes were not correlated to changes in corneal thickness. Conclusions: The OPA measured with the Pascal® device seems to be dependent on IOP changes. Particular caution should be taken in the interpretation of OPA in estimating pulsatile ocular blood flow.</description><identifier>ISSN: 0271-3683</identifier><identifier>EISSN: 1460-2202</identifier><identifier>DOI: 10.3109/02713683.2011.626910</identifier><identifier>PMID: 22007729</identifier><language>eng</language><publisher>England: Informa Healthcare</publisher><subject>Aged ; Blood Pressure - physiology ; Cataract surgery ; Dynamic contour tonometry ; Eye - blood supply ; Female ; Heart Rate - physiology ; Humans ; Intraocular pressure ; Intraocular Pressure - physiology ; Lens Implantation, Intraocular ; Male ; Ocular blood flow ; Ocular pulse amplitude ; Phacoemulsification ; Tonometry, Ocular</subject><ispartof>Current eye research, 2012-02, Vol.37 (2), p.115-119</ispartof><rights>2012 Informa Healthcare USA, Inc. 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c417t-d0a5d12b62f1e09a29c1e3b2673fec15b652bcc1f37ae028d47215f9eb7534dd3</citedby><cites>FETCH-LOGICAL-c417t-d0a5d12b62f1e09a29c1e3b2673fec15b652bcc1f37ae028d47215f9eb7534dd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22007729$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Plange, Niklas</creatorcontrib><creatorcontrib>Rennings, Corinna</creatorcontrib><creatorcontrib>Herr, Anne</creatorcontrib><creatorcontrib>Weber, Anke</creatorcontrib><creatorcontrib>Roessler, Gernot F.</creatorcontrib><creatorcontrib>Mazinani, Babac E.</creatorcontrib><creatorcontrib>Kaup, Marion</creatorcontrib><creatorcontrib>Remky, Andreas</creatorcontrib><title>Ocular Pulse Amplitude Before and After Cataract Surgery</title><title>Current eye research</title><addtitle>Curr Eye Res</addtitle><description>Purpose: To investigate the impact of cataract surgery on the association of the ocular pulse amplitude (OPA) and intraocular pressure (IOP) with respect to the interpretation of OPA as an estimate of ocular blood flow. Methods: Twenty-four patients with cataract were included in a clinical study. OPA was measured using dynamic contour tonometry (DCT, Pascal®, SMT Swiss Microtechnology AG, Switzerland). IOP was measured by means of Goldmann applanation tonometry (IOP GAT) and DCT (IOP DCT). All measurements were performed before and one day after cataract surgery. Results: At baseline, OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.82, P &lt; 0.0001), but not to age or axial length. Postoperative OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.65, P = 0.0004). In 17 patients, IOP GAT decreased after surgery (IOP DCT n = 14), whereas an increase was apparent in seven patients (IOP DCT n = 10). The mean absolute deviation of IOP GAT pre- to post-surgery was 4.54 mmHg ± 2.47 (range 1-10 mmHg) and 5.4 mmHg ± 3.2 (range 1.1-13.1 mmHg) for IOP DCT. The changes of OPA were significantly correlated to changes in IOP GAT (r = 0.48, P = 0.017) and IOP DCT (r = 0.60, P = 0.001). IOP GAT and IOP DCT changes were not correlated to changes in corneal thickness. Conclusions: The OPA measured with the Pascal® device seems to be dependent on IOP changes. 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Methods: Twenty-four patients with cataract were included in a clinical study. OPA was measured using dynamic contour tonometry (DCT, Pascal®, SMT Swiss Microtechnology AG, Switzerland). IOP was measured by means of Goldmann applanation tonometry (IOP GAT) and DCT (IOP DCT). All measurements were performed before and one day after cataract surgery. Results: At baseline, OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.82, P &lt; 0.0001), but not to age or axial length. Postoperative OPA was correlated to IOP GAT (r = 0.67, P = 0.0002) and IOP DCT (r = 0.65, P = 0.0004). In 17 patients, IOP GAT decreased after surgery (IOP DCT n = 14), whereas an increase was apparent in seven patients (IOP DCT n = 10). The mean absolute deviation of IOP GAT pre- to post-surgery was 4.54 mmHg ± 2.47 (range 1-10 mmHg) and 5.4 mmHg ± 3.2 (range 1.1-13.1 mmHg) for IOP DCT. The changes of OPA were significantly correlated to changes in IOP GAT (r = 0.48, P = 0.017) and IOP DCT (r = 0.60, P = 0.001). IOP GAT and IOP DCT changes were not correlated to changes in corneal thickness. Conclusions: The OPA measured with the Pascal® device seems to be dependent on IOP changes. Particular caution should be taken in the interpretation of OPA in estimating pulsatile ocular blood flow.</abstract><cop>England</cop><pub>Informa Healthcare</pub><pmid>22007729</pmid><doi>10.3109/02713683.2011.626910</doi><tpages>5</tpages></addata></record>
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subjects Aged
Blood Pressure - physiology
Cataract surgery
Dynamic contour tonometry
Eye - blood supply
Female
Heart Rate - physiology
Humans
Intraocular pressure
Intraocular Pressure - physiology
Lens Implantation, Intraocular
Male
Ocular blood flow
Ocular pulse amplitude
Phacoemulsification
Tonometry, Ocular
title Ocular Pulse Amplitude Before and After Cataract Surgery
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