Search results for "ocular"

ALTERAZIONI DEL RECETTORE OCULARE E COMPENSI DELLA COLONNA CERVICO-DORSALE: PARAMETRI STABILOMETRICI

2009

Scopo dello studio è stato quello di analizzare la relazione tra atteggiamento scoliotico dorsale e difetti di convergenza oculare. In 40 soggetti giovani adolescenti maschi di età compresa tra 10 e 12 anni è stata eseguita una valutazione delle curve rachidee con scoliosometro ed un esame stabilometrico mediante piattaforma Baropodometrica Elettronica Modulare “Diagnostic Support”, da cui sono stati ricavati la velocità di variazione, la deviazione media coronale (x-medio), la deviazione media sagittale (y-medio) e la superficie e lunghezza dello statokinesigramma. Inoltre, per l’analisi della funzionalità del recettore oculare, sono stati effettuati il test di convergenza oculare e il cov…

Corneal thickness and intraocular pressure in pediatric patients with Celiac disease or Inflammatory Bowel Disease

Evaluation of intraocular pressure and other biomechanical parameters to distinguish between subclinical keratoconus and healthy corneas

2021

(1) Purpose: To assess the main corneal response differences between normal and subclinical keratoconus (SCKC) with a Corvis® ST device. (2) Material and Methods: We selected 183 eyes of normal patients, of a mean age of 33 ± 9 years and 16 eyes of patients with SCKC of a similar mean age. We measured best corrected visual acuity (BCVA) and corneal topography with a Pentacam HD device to select the SCKC group. Biomechanical measurements were performed using the Corvis® ST device. We carried out a non-parametric analysis of the data with SPSS software (Wilcoxon signed rank-test). (3) Results: We found statistically significant differences between the control and SCKC groups in some corneal b…

Semantic, Typicality and Odor Representation: A Cross-cultural Study

2005

This study investigated odor-category organization in three cultures by evaluating (i) the relationship between linguistic and perceptual categorization and (ii) the existence of an internal structure of odor categories. In the first experiment, three groups of 30 participants from American, French and Vietnamese cultures performed a sorting task. The first group sorted 40 odorants on the basis of odor similarity, the second group sorted 40 odor names on the basis of name similarity and the last group sorted 40 odor names on the basis of imagined odor similarity. Results showed that odor categorization was based on perceptual or conceptual similarity and was in part independent of word and …

Lentes intraoculares multifocales refractivas de nuevo diseño segmentado

2017

La presbicia y las cataratas son dos condiciones oculares relacionadas con el envejecimiento del cristalino, que presentan una elevada incidencia conjunta por encima de los 60 años. Dada la tendencia, claramente visible en los estudios de pirámides poblacionales, al envejecimiento en la población mundial por la mayor esperanza de vida, ambas condiciones van a tener una enorme incidencia en el futuro. Ambas comparten una opción terapéutica común: la sustitución del cristalino por una lente intraocular multifocal (LIOMTF), que permite a los pacientes restaurar su visión y además obtener un amplio rango de distancias con visión funcional sin necesidad de ayudas ópticas. En la actualidad existe…

Changes in physiological astigmatism of human eye during accommodation in emmetropes (Conference Presentation)

2017

Introduction: Most young emmetrope eyes are far from ideal and have some degree of minor spherocylindrical error including also physiological astigmatism. Because of the changes in the shape of optical interfaces, pupil size, eyelid pressure, tear film, body posture, binocularity and accommodation astigmatism is considered as constantly dynamic phenomenon (Cheng et al, 2004). The purpose of this study was to evaluate and quantify changes in physiological astigmatism during accommodation. Method: Twenty young emmetropes with mean age 24 ± 4 years were selected for the study. Refraction and accommodative response were measured monocularly for dominant eye with an open-field infrared autorefract…

Efficacy and safety study of an eyelid gel after repeated nocturnal application in healthy contact lens users and non-users

2020

Purpose: To evaluate skin biocompatibility of a nighttime hydrating eyelid gel and possible ocular surface effects in contact lens users (CLU) and non-contact lens users (NCLU). The formulation is registered as a medical device as Tridocosahexaenoine-AOX® (TDHA-AOX) (a concentrated DHA triglyceride), containing also hyaluronic acid (HA). Methods: A prospective, randomized, masked clinical trial was performed with 62 participants of both sexes, aged 20–70 years, split into: (1) CLU (n = 30) and (2) NCLU (n = 32). All participants were instructed to apply a single dose of the moisturizing gel (containing TDHA-AOX and HA) nightly to the upper and inner eyelids of their right eye (RE) only, and…

Morphology of Skeletal Muscle

2013

Skeletal muscle makes up the largest organ of the body, by both volume and weight, comprising more than 40 %. More than 500 diseases concern muscle tissue, the majority of which originate in muscle, others secondarily affect the muscle, foremost by denervation. The functional and structural dependence of skeletal muscle on innervation—that is, the peripheral and central nervous systems—renders muscle tissue unique and adds a dimension to the nosology, more obviously than in other organs. Therefore, diseases affecting muscle are also termed neuromuscular diseases. Within the nosological spectrum of the muscle parenchyma, which encompasses hereditary and acquired conditions, muscular dystroph…

Management of Descemet's membrane haemorrhage after canaloplasty

2019

Axial Length and Anterior Segment Alterations in Former Preterm Infants and Full-Term Neonates Analyzed With Scheimpflug Imaging.

2017

Purpose To compare the axial length and anterior segment alterations in preterm infants with and without retinopathy of prematurity with those of full-term infants. Methods The Wiesbaden Prematurity Study investigated 503 participants of former gestational age ≤32 weeks and gestational age ≥37 weeks now being aged 4 to 10 years. This study included 485 participants in the prospective controlled cross-sectional, hospital-based study with successful Pentacam Scheimpflug imaging. Anterior segment parameters, axial length measurements, and associated factors were analyzed. Results Corneal thickness did not differ between former preterm and full-term infants. Significant differences were found b…