This case series reported on late stromal rejections in eyes after uncomplicated deep anterior lamellar keratoplasties (DALKs). Four eyes of three patients experienced episodes of isolated stromal rejection 33 to 46 months after surgically uncomplicated DALKs and a minimum of...
Stromal keratocytes are responsible for wound healing in the cornea following damage. Keratocytes at the site of injury become activated and differentiate to myofibroblasts which secrete extracellular matrix (ECM) to close the wound, a response mediated by transforming growth factor...
This animal study looked at corneal lenticule allograft transplantation in rabbits. Seven rabbits underwent small incision lenticule extraction (SMILE) procedures, where their stromal lenticules were extracted and transplanted fresh into pre-prepared corneal stromal pockets of seven recipient eyes. Animals were...
This retrospective study looked at differences in epithelial smoothing in patients with bullous keratopathy (BK) undergoing either corneal tattooing or anterior stromal puncture (ASP). Both procedures were carried out for symptomatic relief in eyes with poor visual potential. Chinese ink...
Based on biomicroscopic and histopathologic features, corneal dystrophies can be broadly classified into epithelial, Bowman’s layer / anterior stromal, stromal, and endothelial dystrophies. Corneal dystrophies are a group of inherited, bilateral, gradually progressing, non- inflammatory conditions caused by accumulation of...
This study group reviewed cytokine- and chemokine-mediated mechanisms of diffuse lamellar keratitis (DLK) after lamellar corneal surgical procedures. DLK can occur early or late (months to decades) after all lamellar corneal surgeries, including laser in situ keratomileusis, small incision lenticule...
This cross-sectional study assessed corneal thickness in association with diabetic peripheral neuropathy (DPN) severity. The study also tried to identify the layer of the cornea most affected by DPN status. Performed at the University of Michigan the study included three...
In this review, the author summarised the current microbiomic and immunological evidence related to the pathogenesis of Acanthamoeba keratitis (AK). AK has been described for almost 50 years, but the exact biology of the disease remains perplexing. Acanthamoeba spp. are...
This study examined rates of asymptomatic keratitis in failed full thickness corneal grafts, which were not picked up clinically preoperatively. During a five year period 53 penetrating keratoplasties (PK) were performed for long-standing graft decompensation with stromal opacity and /...
Corneal keloids are rare and typically reported following trauma (including post-surgical) and has been reported without any trauma or previous surgery. A corneal keloid differs from a hypertrophied scar in that it occurs months/years after the injury, enlarges over time...
Intraoperative floppy iris syndrome (IFIS) is charcterised by flaccid iris stroma leading to fluttering and billowing of iris, tendency of iris to prolapse through surgical incisions and causing intraoperative pupil constriction. IFIS is characterised as complete when all three features...
The cornea is continually regenerated to maintain clear vision, due to a population of stem cells located in the limbal region between the cornea and the conjunctiva. These limbal stem cells (LESC) reside in crypts in structures called the Pallisades...