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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1991-5-23
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pubmed:abstractText |
We present 5-year findings on 198 consecutive radial keratotomy surgeries. Follow-up was obtained on 134 (68%) of these eyes. Mean spherical equivalent (SE) was -4.3 diopters before surgery, average keratometry was 44.11 D, and 75% of eyes had uncorrected distance acuity of 20/400 or worse. Average SE was -0.52 D for eyes seen at 5 years, which compares with -0.78 D for eyes examined at 18 months. Seventeen percent of eyes show at least a 1-D change in refraction from 18 months to 5 years compared with 13% between 18 months and 3 years. Fifty-six percent of eyes are within 1 D of emmetropia at 5 years, compared with 66% at 18 months. Uncorrected visual acuity was at least 20/40 in 62% of eyes seen at 5 years and in 73% of eyes seen at 18 months. Ten percent of eyes have lost at least two lines of best-corrected visual acuity from before surgery to 5 years later. Factors are identified that relate to loss of uncorrected and best corrected acuity over 5 years. Average keratometry at 5 years is 40.7 D, as compared with 41.2 D at 18 months. Long-term keratometric results appear less stable than refractive results and a theory for this instability is presented. The results indicate radial keratotomy to be safe and effective for the vast majority of patients in this series for 5 years postoperatively.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:issn |
1042-962X
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
5
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pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
8-20
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2488787-Adult,
pubmed-meshheading:2488787-Astigmatism,
pubmed-meshheading:2488787-Clinical Protocols,
pubmed-meshheading:2488787-Cornea,
pubmed-meshheading:2488787-Follow-Up Studies,
pubmed-meshheading:2488787-Humans,
pubmed-meshheading:2488787-Keratotomy, Radial,
pubmed-meshheading:2488787-Longitudinal Studies,
pubmed-meshheading:2488787-Myopia,
pubmed-meshheading:2488787-Prognosis,
pubmed-meshheading:2488787-Refraction, Ocular,
pubmed-meshheading:2488787-Visual Acuity
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pubmed:articleTitle |
Five-year results of radial keratotomy.
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pubmed:affiliation |
Section of Ophthalmology, Cedars Medical Center, Miami, FL.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
|