You searched for " cornea"

726 results found

Anaesthetic drops abuse

A 67-year-old retired female nurse presented with persistent, bilateral, non-healing (>6 weeks) corneal ulcers and stromal ring infiltrates (Figures 1 and 2). The epithelial defects were the result of chemical burns caused by her contact lenses which had been stored...

Resurfacing the ocular surface

The ocular surface (OS) is an anatomical and functional unit made of the tear film, the conjunctival, limbal and corneal epithelium, the lacrimal, mucous and meibomian glands and the lids and blink reflex. The tear film is composed of a...

Effect of refractive corneal surgery on IOP and glaucoma progression

Accuracy of intraocular pressure (IOP) measurement depends on the biomechanical properties of the cornea, including its thickness central corneal thickness (CCT) and keratometry (K). Fifty-six eyes of 56 patients with primary open angle glaucoma (POAG) who had a history of...

Corneal molecular and cellular biology for refractive surgeon

This is an interesting literature review that looks into the recent advances concerning the corneal molecular and cellular processes that are involved in the wound healing response after excimer laser surface ablation and LASIK surgery. It talks about the complex...

Outcomes of corneal cross-linking in paediatric patients compared to fellow untreated eyes

This retrospective cohort study evaluated long-term visual, refractive, topographic and safety outcomes of corneal cross-linking (CXL) in patients younger than 18-years-old with keratoconus. The study included all consecutive paediatric patients who underwent epithelium-off CXL treatment for keratoconus at the study...

Q&A: Mr Goel and Mr Loomba on alcohol delamination and phototherapeutic keratectomy (PTK) for the treatment of recurrent corneal erosion syndrome

Recurrent corneal erosion syndrome is a common, recurrent condition caused by abnormal epithelial adhesion to the underlying basal lamina. Spontaneous breakdown of the corneal epithelium can lead to the sudden onset of ocular pain, blurred vision, tearing and photophobia, typically...

Acute dellen formation post trauma

Corneal dellen are saucer-like thinnings, usually of the peripheral cornea [1]. Dellen formation is thought to be related to localised tear film instability [2], specifically the absence of the mucin component of the tear film. Without the mucin layer, dry...

Transcriptomic analysis of ocular tissues

Transcriptomics is defined as the analysis of the complete set of RNA transcripts present in a cell under different circumstances, quiescent versus challenge, by microarray analysis. Comparison of transcriptomes identifies genes that are differentially expressed in different cell populations under...

Corneal Transplantation

This relatively small book provides a thorough overview of the history of corneal transplantation, an update on the anatomy and physiology of the cornea with particular reference to the components essential to keratoplasty procedures, also graft preparation and storage. There...

Ocular characteristics in Marfan syndrome

Marfan syndrome (MFS) is a genetic disorder with clinical manifestations associated with cardiovascular, ocular and skeletal organ systems. Typical signs are descending aortic root aneurysms, ectopia lentis, tall stature and scoliosis. This observational study looked at the ocular characteristics, visual...

An uncommon late postoperative complication of combined cataract surgery and intravitreal triamcinolone injection

Case report A 64-year-old female with diabetic maculopathy (DMO) underwent phacoemulsification with intraocular lens (IOL) implantation in her right eye combined with intravitreal triamcinolone (IVTA). Diabetes control was poor with HbA1c (IFCC) of 119mmol/mol and blood sugar level of 27mmol/L....

LASEK vs. epi-LASIK for myopia: meta-analysis

Previous studies have produced inconsistent conclusions on the relative benefits between LASEK vs. Epi-LASIK. LASEK uses 20% alcohol to separate an epithelial flap from the Bowman membrane. After ablation, the epithelial flap is repositioned onto the cornea. Epi-LASIK creates the...