منابع مشابه
Bilateral Keratectasia 34 Years after Corneal Transplant
We report the clinical findings of a patient with severe bilateral keratectasia 34 years after a penetrating keratoplasty (PK) in both eyes. An otherwise healthy 67-year-old man complained of deterioration of the eyesight in both eyes over the last 6 months. The patient was diagnosed with bilateral keratoconus at the age of 32 years, and he underwent a bilateral PK. At presentation, visual acui...
متن کاملPregnancy may trigger late onset of keratectasia after LASIK.
To the Editor: It is common knowledge that the biomechanical stability of connective tissue changes during pregnancy, leading to reduced stiffness and increased extensibility. These changes are most probably hormone-induced and, therefore, corneal biomechanics also may change during pregnancy. Five patients who underwent LASIK experienced vision deterioration during pregnancy, which we attribut...
متن کاملCorneal collagen crosslinking in post-LASIK keratectasia.
BACKGROUND/AIMS To evaluate the effect of corneal collagen crosslinking with riboflavin and UV-A as a treatment option for postlaser in situ keratomileusis keratectasia. METHODS Crosslinking was carried out in 22 eyes of 15 patients with iatrogenic keratectasia. Follow-up, according to a standardised protocol (uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), slit-lamp ex...
متن کاملKinetochore Fiber Maturation in PtK
Kinetochore microtubules (kMts) are a subset of spindle microtubules that bind directly to the kinetochore to form the kinetochore fiber (K-fiber). The K-fiber in turn interacts with the kinetochore to produce chromosome motion toward the attached spindle pole. We have examined K-fiber maturation in PtK 1 cells using same-cell video light microscopy/serial section EM. During congression, the ki...
متن کاملKinetochore microtubules in PTK cells
We have analyzed the fine structure of 10 chromosomal fibers from mitotic spindles of PtK1 cells in metaphase and anaphase, using electron microscopy of serial thin sections and computer image processing to follow the trajectories of the component microtubules (MTs) in three dimensions. Most of the kinetochore MTs ran from their kinetochore to the vicinity of the pole, retaining a clustered arr...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 2002
ISSN: 0007-1161
DOI: 10.1136/bjo.86.4.486