Linked Life Data

2257263

Source:http://linkedlifedata.com/resource/pubmed/id/2257263

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1991-1-28
pubmed:abstractText
Optical zone diameters in photorefractive keratectomy are small in order to minimize the depth of stromal tissue excision and, possible, the resultant stromal scarring. A small optical zone demands accurate placement on the corneal surface. This article reviews the principles that are important to location and measurement of the optical zone in photorefractive keratectomy. The ablated area should be centered on the cornea overlying the entrance pupil while the patient is fixating coaxially with the surgeon. An optical zone that is too small or decentered may decrease acuity, lessen contrast sensitivity, or produce glare, either on the fovea or on the perifoveal retina. The relationship between optical zone size and location and quality of vision is not yet known. Studies of this relationship will require videokeratography to locate the optical zone and its relationship to the entrance pupil, a capability that current videokeratoscopes do not possess.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
1042-962X
pubmed:author
pubmed:issnType
Print
pubmed:volume
6
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
363-71
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
Corneal topography and optical zone location in photorefractive keratectomy.
pubmed:affiliation
Department of Ophthalmology, Emory University, Atlanta, Ga. 30322.
pubmed:publicationType
Journal Article, Review, Case Reports, Research Support, Non-U.S. Gov't