Queratocono

BACKGROUND: Keratoplasty in the pediatric population has been considered a high-risk procedure. OBJECTIVE: To know the demographic data of patients younger than 18 years treated with optical keratoplasty, indications for surgery and its results. MATERIAL AND METHODS: A retrospective study was carried out at Conde de Valenciana Ophthalmology Institute, in which the medical records of patients younger than 18 years treated with optical keratoplasty from 2009 to 2019 were analyzed...

INTRODUCTION: Collagenase II has been used to induce experimental keratoconus in animal models. However, its effect when administered by intrastromal injection has not been studied, so the purpose of this study was to study the effects of intrastromal injection of collagenase II on corneal surface and corneal morphology. METHODS: Six New Zealand rabbits were used, collagenase II was administered by intrastromal injection (5 µL of 2.5 mg/mL) in the right eyes and balanced salt solution in the left eyes...

INTRODUCTION: Keratoconus is the most frequent corneal ectasia and second most common cause of keratoplasty worldwide. The clinical and epidemiological characteristics of keratoconus have rarely been studied in Spain, and to date, no study has been done in Asturias. MATERIAL AND METHODS: A cross-sectional study was conducted to analyze all cases of keratoconus diagnosed in the first consultations of the Cornea and Surface section of the Hospital Universitario Central de Asturias (Oviedo) and Hospital Universitario de Cabueñes (Gijón) between 2017 and 2020...

OBJECTIVE: To evaluate early keratometric and refractive results after intra-corneal rings surgery in keratoconus patients. METHOD: 50 eyes of 25 patients with keratoconus within stage 2 and 3, underwent intra-stromal corneal rings surgery by using the femtosecond surgical laser, one month after surgery, corneal keratometries and patient refraction were compared vs pre-operative ones. RESULTS: Mean pre-operative low keratometry was 48.8 ± 3...

PURPOSE: To analyze the changes in the anterior and posterior corneal surfaces measured with a Scheimpflug imaging device in keratoconus patients implanted with intracorneal ring segments (ICRS) and to correlate those changes with the visual outcomes. METHODS: This prospective interventional case series study included 92 eyes of 60 patients with keratoconus who underwent Kerarings (Mediphacos, Belo Horizonte, Brazil) ICRS implantation. Keratometric (K) readings, corneal asphericity (Q value) and elevations of both anterior and posterior corneal surfaces were evaluated using a Scheimpflug imaging device preoperatively and at 1, 3, 6 and 12 months after surgery...

A 16-year-old man presented at our institute with progressive reduction of vision acuity in both eyes. This patient presented to our corneal service with clinical and topographical features of bilateral superior keratoconus. The clinical features, topographical, Scheimpflug and photographs images findings of a asymmetric bilateral superior keratoconus are presented.

Objetivo: El objetivo del estudio fue describir los resultados visuales y queratométricos de pacientes con queratocono sometidos a tratamiento con crosslinking (CXL). Método: Estudio retrospectivo de 277 ojos de 144 pacientes con queratocono progresivo que se sometieron a CXL. Se obtuvieron mediciones topográficas antes del procedimiento y 12 meses después. La agudeza visual corregida (AVC), la queratometría más plana (K1), la queratometría más curva (K2), el promedio de la queratometría (Kprom), el cilindro, el eje de K1, el eje de K2 y el valor paquimétrico del punto de la córnea más delgado fueron las variables evaluadas...

OBJECTIVE: clinically characterizing cornea transplant patients and their distribution according to indicated and post-operative conditions of cornea transplantation, as well as estimating the average waiting time. METHOD: a cross-sectional, descriptive and analytical study performed for all cornea transplants performed at a reference service (n=258). Data were analyzed using Statistical Package for the Social Sciences, version 20.0. RESULTS: the main indicator for cornea transplant was keratoconus...