Document Detail

Goldmann applanation tonometry after myopic photorefractive keratectomy.
MedLine Citation:
PMID:  9826038     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To determine the accuracy of applanation tonometry in patients with corneas thinned by photorefractive keratectomy, and to correlate corneal changes with tonometric readings. METHODS: The intraocular pressure was measured with Goldmann applanation tonometry in 87 patients who underwent photorefractive keratectomy before and 1, 6 and 12 months after treatment. The treatments ranged from -1.5 to -14 diopters (mean=-7.6+/-4.1 diopters) and the fellow eyes were used as controls. RESULTS: In the treated eyes the intraocular pressure before surgery ranged from 11 to 26 mmHg (mean=17.7+/-2.8 mmHg). One month after surgery it ranged from 5 to 22 mmHg (mean=11.9+/-2.7 mmHg) with a significant underestimation (P=1x10(-33)). Six months after surgery it ranged from 6 to 22 mmHg (mean=12+/-3 mmHg) with a significant underestimation (P=5x10(-30)). Twelve months after surgery it ranged from 8 to 22 mmHg (mean=12.7+/-2.7 mmHg) with a significant underestimation (P=5x10(-31)). CONCLUSIONS: A correcting factor should be applied when using applanation tonometry to measure intraocular pressure in patients who have undergone PRK.
N Rosa; G Cennamo; M A Breve; A La Rana
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Acta ophthalmologica Scandinavica     Volume:  76     ISSN:  1395-3907     ISO Abbreviation:  Acta Ophthalmol Scand     Publication Date:  1998 Oct 
Date Detail:
Created Date:  1999-01-13     Completed Date:  1999-01-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9507578     Medline TA:  Acta Ophthalmol Scand     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  550-4     Citation Subset:  IM    
Eye Department, University Federico II, Naples, Italy.
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MeSH Terms
Cornea / physiopathology,  surgery*
Follow-Up Studies
Intraocular Pressure / physiology*
Lasers, Excimer
Middle Aged
Myopia / physiopathology,  surgery*
Photorefractive Keratectomy*
Postoperative Period
Refraction, Ocular
Retrospective Studies
Tonometry, Ocular*

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

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