Machine learning methods to identify risk factors for corneal graft rejection in keratoconus.

Machine learning can be used to identify risk factors associated with graft rejection after corneal transplantation for keratoconus. The study included all keratoconus eyes that underwent primary corneal transplantation from 1994 to 2021. Data relating to the recipient, donor, surgery, and postoperative course that might be associated with the occurrence of a graft rejection reaction were compiled.

Long-term follow-up of ocular involvement in hereditary mucoepithelial dysplasia.

An 11-month-old boy with nonscarring alopecia was referred for ophthalmic evaluation because of photophobia from the age of 4 months. Whole-exome sequencing identified a heterozygous mutation in the SREBF1 gene, confirming the diagnosis of hereditary mucoepithelial dysplasia. Ocular examination revealed meibomian gland dysfunction and superficial corneal vascularization and opacity.

Risk of Induction of Corneal Neovascularization with Topical Erythropoietin: An Animal Safety Study.

Purpose: To evaluate the pro-angiogenic effect of topical erythropoietin on cornea in chemical burn-injured rabbit eyes.

Methods: The corneal alkali-burn injury was induced in 10 eyes of 10 rabbits using filter paper saturated with 1.0 mol sodium hydroxide.

Femtosecond thin-flap laser assisted in situ keratomileusis for correction of post-penetrating keratoplasty ametropia: long-term outcome.

Purpose: To evaluate the long-term clinical outcomes of femtosecond thin-flap LASIK (femto-LASIK) for correction of refractive error after penetrating keratoplasty in keratoconus-affected eyes.

Setting: a private ophthalmology clinic.

Design: Prospective interventional case series.

Topical erythropoietin for the management of scleral necrosis after ocular chemical burns.

Purpose: To evaluate the efficacy of topical erythropoietin for chemical burn induced scleral necrosis.

Methods: This study included 18 eyes of 16 patients with chemical burn induced scleral necrosis who presented within 6 weeks of the injury. In the prospective arm, 11 eyes received topical erythropoietin, 3000 IU/mL every 6 h, along with standard medical treatment.

Clinical Outcomes of Femtosecond Laser-assisted Implantation of 325-Degree Versus 340-Degree Arc Length Intracorneal Ring Segments in Naive Keratoconic Eyes.

Purpose: To evaluate and compare clinical outcomes after femtosecond laser-assisted implantation of 325-degree versus 340-degree arc length intracorneal ring segments (ICRS) in eyes with keratoconus (KCN).

Methods: In this prospective non-randomized interventional case series, 23 eyes of 21 patients diagnosed with KCN, underwent femtosecond laser-assisted implantation of two types of ICRS, which included a 325-degree ICRS (Group 325) and a 340-degree ICRS (Group 340). The primary outcome measures were uncorrected distance visual acuity (UDVA), and the secondary outcome measures included corrected distance visual acuity (CDVA), sphere, cylinder, mean refractive spherical equivalent (MRSE), keratometry, vectorial change in corneal astigmatism, and the location of maximum keratometry relative to the corneal apex.

Suture-related complications after deep anterior lamellar keratoplasty for keratoconus.

Purpose: The purpose of this study is to determine the incidence of suture-related complications, their risk factors, and effects on the clinical outcomes after deep anterior lamellar keratoplasty (DALK) for keratoconus.

Methods: In this retrospective, comparative, interventional study, the records of consecutive patients with keratoconus who underwent DALK were reviewed for suture-related complications. Univariate analyses were used to identify risk factors for suture complications.

Management of post-keratoplasty ametropia.

Even after a successful corneal transplant, patients experience severe refractive errors, impeding their rehabilitation and satisfaction. Refractive errors can be caused by recipient pathology and corneal thickness, as well as intraoperative factors such as donor-host discrepancy, recipient's eccentric trephination, vitreous length, wound apposition, technique of suturing, and suture material. Also, wound healing and the interim between keratoplasty and suture removal contribute to astigmatism.

Lately Diagnosed Acanthamoeba Keratitis Manifesting as an Intrastromal Corneal Abscess: A Case Report.

A 42-year-old female contact lens wearer presented to a local emergency department with a 3-day history of decreased vision and ocular discomfort in her right eye. She was started on topical fluorometholone and oral acyclovir with initial diagnosis of herpes simplex keratitis. After 3 weeks of worsening symptoms, she was diagnosed with bacterial corneal ulcer and treated with levofloxacin eye drops every 2 hr.

Long-Term Clinical Outcomes of Keratolimbal Allograft Alone or in Combination With Keratoplasty in Chronic and Delayed-Onset Mustard Gas Keratopathy.

Purpose: The purpose of this study was to investigate the long-term clinical outcome of keratolimbal allograft (KLAL) alone or in combination with keratoplasty, in the management of patients with chronic and delayed-onset mustard gas keratopathy (MGK).

Methods: Patients who had KLAL for MGK with or without corneal transplantation between 2002 and 2016 were recalled to be enrolled in this retrospective interventional case series. The primary outcome was the success rate of the KLAL demonstrated by Kaplan-Meier cumulative survival analysis.

Laser in situ keratomileusis versus Artisan lens implantation in correcting ametropia after penetrating keratoplasty for keratoconus.

Purpose: To compare the long-term safety and efficacy of laser in situ keratomileusis (LASIK) with Artisan phakic intraocular lens implantation to correct refractive errors after penetrating keratoplasty (PK) for keratoconus.

Methods: This retrospective comparative interventional case series included a total of 33 consecutive keratoconus eyes that had previous PK and received subsequent LASIK (n = 16) or Artisan lens implantation (n = 17) were included in this study. Outcome measures were uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive error, and complications.

Mini-Conjunctival Limbal Autograft (Mini-CLAU) Using Platelet-Rich Plasma Eye Drops (E-PRP): A Case Series.

Purpose: The purpose of this study was to introduce a new method of limbal stem cell transplantation using autologous platelet-rich plasma (E-PRP) eye drops for unilateral total limbal stem cell deficiency.

Methods: Patients with total unilateral limbal stem cell deficiency due to chemical burn underwent mini-conjunctival limbal autograft using autologous E-PRP drops. One small limbal block, measuring 2 × 2 mm, was harvested from the patients' contralateral healthy eye and transplanted to the diseased eye.

Ophthalmology foundation Ophthalmic Surgical Competency Assessment Rubric (OSCAR) for pterygium surgery.

Background: Pterygium surgery is a procedure commonly performed by ophthalmologists. Valid, objective methods are needed to assess competence in this procedure.

Methods: A panel of 5 specialists consisting of members from different regions of the world including Pakistan, United States, Iran, Mongolia and Peru was formed to create a rubric for assessment of pterygium surgery by residents.

Penetrating Keratoplasty Versus Deep Anterior Lamellar Keratoplasty for Advanced Stage of Keratoconus.

Purpose: To compare visual acuity, refractive error, and complications after penetrating keratoplasty (PK) vs deep anterior lamellar keratoplasty (DALK) in the management of advanced stage of keratoconus.

Design: Retrospective, comparative, interventional study.

Methods: This study enrolled 411 consecutive keratoconus eyes with preoperative mean keratometry ≥60 diopters (D) that received either PK (218 eyes) or DALK (193 eyes).

Genetic screening of in Iranian patients with -associated corneal dystrophies and a meta-analysis of global variation frequencies.

Purpose: Transforming growth factor beta-induced ()-associated corneal dystrophies (CDs) are a clinically heterogeneous group of CDs caused by mutations in the gene. Nucleotide sequences encoding two arginine residues at positions 124 and 555 in TGFBI protein are mutation hotspots. We screened regions of that include the hotspots in a cohort of Iranian patients with -associated CDs.

Recurrent Conjunctival Squamous Cell Carcinoma and Intraocular Tumor Extension after Topical Erythropoietin: A Case Report.

Topical erythropoietin has been recently introduced for the treatment of avascular conjunctival and scleral lesions. Before this treatment can be routinely used, however, its safety profile and contraindications should be determined. Herein, we report a case of recurrent conjunctival squamous cell carcinoma (SCC) and intraocular tumor extension after treatment with topical erythropoietin for excisional biopsy-induced scleral necrosis.

Comparative culture of human corneal endothelial cells following treatment with human platelet lysate/fibrin hydrogel versus Y-27632 ROCK inhibitor: in vitro and ex vivo study.

Purpose: The advancement of tissue engineering and cell therapy research has resulted in innovative therapeutic options for patients with corneal endothelial diseases. The aim of this study was to compare the potential effect of using human platelet lysate (HPL)/Fibrin hydrogel versus using a Y-27632 ROCK inhibitor, on the culture of human corneal endothelial cells (HCECs) under in vitro and ex vivo conditions.

Methods: HCECs were isolated from human donors and treated separately with HPL/Fibrin hydrogel, a Y-27632 ROCK inhibitor, and fetal bovine serum (FBS).

A Qualitative Study on Continuing Medical Education Programs for Practicing Ophthalmologists in Iran: Changing Previous Norms.

Introduction: The Continuing Medical Education (CME) programs in the medical community aim to improve the knowledge of practitioners and its effect on changing their performance. Previous studies showed that CME causes minimum changes in physicians' behaviors, so it is important to pay attention to the views of this group. In this regard, this qualitative study aimed to explain the Iranian Ophthalmologists' perceptions and experiences concerning the CME Programs in Iran.

Potential Effect of Human Platelet Lysate on Expansion of Human Corneal Endothelial Cells Compared with Y-27632 ROCK Inhibitor.

Purpose: Corneal endothelial cell (CEC) therapy can be used as a promising therapeutic option for patients with various corneal endothelial dysfunctions. In this study, we compared the proliferative effect of human platelet lysate (HPL), as a xeno-free medium supplement, with Y-27632 Rho/rho-associated protein kinase (ROCK) inhibitor, as a well-known proliferative and adhesive agent for CECs, and fetal bovine serum (FBS) as the control, in the culture medium of human corneal endothelial cells (HCECs).

Methods: We isolated HCECs from human donors and treated the cells as three different treatment groups including 20% HPL only, 10 μM Y-27632 ROCK inhibitor, combination of 20% HPL and 10 μM Y-27632 ROCK inhibitor, and 20% FBS as the control group.

Use of erythropoietin in ophthalmology: a review.

Erythropoietin (EPO) is a glycoprotein hormone that regulates hematopoiesis in the human body. The presence of EPO and its receptors in different tissues indicates that this hormone has extramedullary effects in other tissues, including the eye. We focus on the biological roles of this hormone in the development and normal physiologic functions of the eye.

Topical Erythropoietin for Treatment of Scleral Necrosis.

Purpose: To investigate the safety and efficacy of topical erythropoietin for the treatment of scleral necrosis.

Methods: This study enrolled eight consecutive patients with scleral necrosis due to previous ocular surgery, rheumatoid arthritis-associated necrotizing anterior scleritis, and thermal and chemical burns. Conventional treatments failed to heal avascular scleral lesions in all eyes.