Corneal Epithelial Thickness in Normal Corneas with Low and High Toricity.

Purpose: To compare the corneal epithelial thickness along the flat and steep meridians of corneas with low and high toricity.

Methods: This was a prospective observational comparative study on healthy subjects with normal corneas seeking preoperative evaluation for refractive surgery at a university-based hospital. Subjects with up to 2 diopters (D) of corneal with-the-rule astigmatism were defined as low corneal toricity (CT), whereas cylinder > two-dimensional was considered as high CT.

Corneal Epithelial Thickness Mapping: A Major Review.

The corneal epithelium (CE) is the outermost layer of the cornea with constant turnover, relative stability, remarkable plasticity, and compensatory properties to mask alterations in the underlying stroma. The advent of quantitative imaging modalities capable of producing epithelial thickness mapping (ETM) has made it possible to characterize better the different patterns of epithelial remodeling. In this comprehensive synthesis, we reviewed all available data on ETM with different methods, including very high-frequency ultrasound (VHF-US) and spectral-domain optical coherence tomography (SD-OCT) in normal individuals, corneal or systemic diseases, and corneal surgical scenarios.

The use of in vivo confocal microscopy to track treatment success in fungal keratitis and to differentiate between Fusarium and Aspergillus keratitis.

Purpose: To evaluate the usefulness of serial in vivo confocal microscopy (IVCM) examinations to measure hyphal density for monitoring the treatment success among patients with fungal keratitis, and to compare the hyphal diameter as well as branching angle as a way of differentiation between Aspergillus and Fusarium species observed in IVCM.

Study Design: Prospective nonrandomized study.

Patients And Methods: The study was conducted from February 2015 to September 2016.

Application of polycaprolactone nanofibers as patch graft in ophthalmology.

Purpose: The purpose of the study was to evaluate tissue reaction to polycaprolactone (PCL) nanofiber patches in the cornea, conjunctiva, and anterior chamber (AC) in rabbit eyes and to assess their biocompatibility for use as patch grafts.

Methods: Two 100 μ PCL patches were implanted under the conjunctiva and in the corneal stroma of one albino New Zealand rabbit, and pathologic evaluation was done after 3 weeks. In the next step, two PCL patches were implanted; one in the corneal stroma and the other in the AC of two rabbits followed by pathologic evaluation after 3 months.

Erratum.

[This corrects the article DOI: 10.1159/000454979.].

Corneal Biomechanical Findings in Contact Lens Induced Corneal Warpage.

Purpose. To evaluate the difference in biomechanical properties between contact lens induced corneal warpage and normal and keratoconic eyes. Method.

Recurrent Corneal Perforation due to Chronic Graft versus Host Disease; a Clinicopathologic Report.

Purpose: To describe a case of chronic graft versus host disease (GVHD) leading to severe dry eye and recurrent corneal perforation in both eyes, its stepwise management and histopathological reports.

Case Report: A 22-year-old woman with a history of thalassemia and subsequent high-dose chemotherapy followed by allogeneic bone marrow transplant (BMT) was referred to Farabi Eye Hospital. Despite aggressive medical and surgical intervention, corneal vascularization in her right eye progressed and led to corneal perforation.

Evaluation of Tear Osmolarity Changes After Photorefractive Keratectomy.

Purpose: To assess tear film stability, ocular surface disease index (OSDI) score, Schirmer test value, tear film breakup time (TBUT), and tear osmolarity after photorefractive keratectomy (PRK).

Methods: We enrolled 50 eyes from 25 patients who were PRK candidates (15 men, 10 women). The mean age was 31.

Preoperative anterior segment optical coherence tomography as a predictor of postoperative phakic intraocular lens position.

Purpose: To evaluate anterior segment optical coherence tomography (AS-OCT) in the preoperative simulation of postoperative iris-fixated phakic intraocular lens (pIOL) position in the anterior chamber.

Setting: Farabi Eye Research Center, Department of Ophthalmology, Tehran University of Medical Sciences, Tehran, Iran.

Design: Case series.

A comparison between Goldmann applanation tonometry and dynamic contour tonometry after photorefractive keratectomy.

Background: The intraocular pressure (IOP) could be measured by both Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT). Although these two methods have been discussed widely after laser-assisted sub-epithelial keratectomy (LASIK), there is little data in the cases undergoing photorefractive keratectomy (PRK). We aimed to compare the changes of IOP measurements obtained by GAT and DCT after PRK for myopia/myopic astigmatism.

Comparison of postoperative higher-order aberrations and contrast sensitivity: tissue-saving versus conventional photorefractive keratectomy for low to moderate myopia.

Purpose: To assess the efficacy, predictability, safety, contrast sensitivity, higher-order aberrations (HOAs), and patient satisfaction after tissue-saving photorefractive keratectomy (PRK) and conventional PRK.

Setting: Department of Ophthalmology, Farabi Eye Hospital, Tehran Medical University, Tehran, Iran.

Design: Comparative case series.