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PubMed · 8006490

Cornea: confocal microscopy.

J Fishbaugh
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Abstract

The confocal microscope opens a whole new window in early diagnosis of ocular conditions. Previously, details at the cellular level could only be viewed with conventional microscopes in a laboratory setting. By using confocal microscopy, results can now be obtained instantaneously in the living human eye. This non-invasive high magnification technique provides real-time images of cornea morphology.

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CorneaHumansMicroscopy, Scanning TunnelingJournal Article

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J Fishbaugh. 1994. Cornea: confocal microscopy.. https://pubmed.ncbi.nlm.nih.gov/8006490/

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Posterior corneal surface topographic changes after laser in situ keratomileusis are related to residual corneal bed thickness.

OBJECTIVE: To determine whether ectasia after laser in situ keratomileusis (LASIK) is related to residual corneal bed thickness. DESIGN: Retrospective noncomparative case series. PARTICIPANTS: Thirty-two eyes of 16 patients with refractive errors of -4.00 to -18.00 diopters were examined. INTERVENTION: LASIK was performed. The topography of the posterior corneal surface was examined with the Orbscan slit scanning corneal topography/pachymetry system. MAIN OUTCOME MEASURES: The difference in the elevation of posterior corneal surface regarding the best-fit sphere was measured. RESULTS: After surgery, mean bulge of 17.2 +/- 7.2 microns was found in eyes with residual corneal bed of 250 microns or greater, whereas 41.0 +/- 22.1 microns was seen in eyes with bed thickness less than 250 microns (t = 4.29; P = 0.000). CONCLUSION: Posterior corneal bulge is correlated with the residual corneal bed thickness. The risk of ectasia may be increased if the residual corneal bed is thinner than 250 microns.

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