Confocal microscopy of the corneal after photorefractive keratectomy with the excimer laser

Klinische Monatsblätter für Augenheilkunde
M BöhnkeA A Thaer

Abstract

In photorefractive keratectomy (PRK) procedures, a variable superficial central corneal scar formation ("haze") can be observed following removal of corneal stromal tissue. Today, a near to normal slit lamp finding is observed one year postoperatively in most patients. We employed the slit scanning confocal microscope to study the corneal morphology years after PRK. We selected 5 patients, who had been subjected to unilateral photorefractive surgery 1-3 years earlier and who had no corneal haze upon slit lamp examination. As controls we investigated the non-treated corneas of these patients, 5 healthy controls and 5 contact lens wearers. The confocal microscopic investigation was performed with 25x, 40x and 50x water immersion objectives. The video signal was synconized with the slit scan and stored on S-VHS video tape. By reviewing the videos in the single frame mode, all corneal layers could be qualitatively evaluated. Some minor abnormalities were observed in the epithelium of all PRK-treated eyes. In the epithelial basal cell layer some round structures of about the size of a cell with high reflectivity were observed. These changes were only occasionally found in contact lens wearers, but not in non-treated or normal contro...Continue Reading

Citations

Mar 14, 2000·Journal of Cataract and Refractive Surgery·P Fagerholm
Aug 7, 1999·Progress in Retinal and Eye Research·M Böhnke, B R Masters
Jan 25, 2003·The British Journal of Ophthalmology·I JalbertM Coroneo
Sep 26, 2003·Cornea·Valeria Sánchez-HuertaRamón Naranjo-Tackman
May 25, 2010·Journal of Cataract and Refractive Surgery·Jessica LieGerrit R J Melles

❮ Previous
Next ❯

Related Concepts

Related Feeds

Absence Epilepsy

Absence epilepsy is a common seizure disorder in children which can produce chronic psychosocial sequelae. Discover the latest research on absence epilepsies here.