Document Detail

ProTon tonometer determination of intraocular pressure in patients with scarred corneas.
MedLine Citation:
PMID:  16770025     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate the measure of intraocular pressure (IOP) in patients with scarred corneas obtained from the affected and non-affected areas. MATERIALS AND METHODS: Eighteen patients with small maculo-leucomatous corneal opacity following microbial keratitis were prospectively included in the study. Goldmann applanation tonometry was done first on the non-affected corneal surface. ProTon tonometry (PT) was then carried out on the same eye, to obtain IOP measurements from the non-affected (PT1) and the affected area (PT2) of the cornea. The IOP measurements were compared using a two-tail paired t test. RESULTS: The mean of IOP measurements of PT 2 and PT1 was 22 mm of Hg (SD +/- 5.2) and 14.8 mm of Hg (SD +/- 5.4), respectively. The higher reading of PT2 was statistically significant ( P < 0.001). The mean Goldmann applanation tonometry was 14.6 mm of Hg (SD 5.4) and it did not differ significantly ( P = 0.86) from the PT1 readings of 14.8 mm of Hg (SD 5.4). CONCLUSION: In patients with maculo-leucomatous corneal opacity, determination of IOP by ProTon tonometer varies from the affected to the non-affected area. The ProTon tonometer overestimates the level of IOP when it is applied to a leucomatous corneal opacity.
Arun K Jain; Jaspreet Sukhija; Amod Gupta
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article    
Journal Detail:
Title:  Indian journal of ophthalmology     Volume:  54     ISSN:  0301-4738     ISO Abbreviation:  Indian J Ophthalmol     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-06-13     Completed Date:  2006-08-08     Revised Date:  2008-09-03    
Medline Journal Info:
Nlm Unique ID:  0405376     Medline TA:  Indian J Ophthalmol     Country:  India    
Other Details:
Languages:  eng     Pagination:  95-8     Citation Subset:  IM    
Department of Ophthalmology, Post Graduate Institute of Medical Research and Education, Chandigarh, India.
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MeSH Terms
Cicatrix / pathology,  physiopathology*
Cornea / pathology*
Corneal Opacity / pathology,  physiopathology*
Equipment Design
Follow-Up Studies
Intraocular Pressure / physiology*
Middle Aged
Prospective Studies
Reproducibility of Results
Tonometry, Ocular / instrumentation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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