Effect of Body Position on Intraocular Pressure Measured by Rebound Tonometer in Healthy Children.

Objectives: To evaluate the effect of body position on intraocular pressure (IOP) measurement in the pediatric age group.

Materials And Methods: Children whose general condition was healthy and ophthalmic examination was within normal limits were included. Forty-nine eyes of 49 pediatric patients were included in the study.

Serum 25-Hydroxy Vitamin D, Vitamin B12, and Folic Acid Levels in Progressive and Nonprogressive Keratoconus.

Purpose: To evaluate the serum 25-hydroxy vitamin D, vitamin B12, and folic acid (FA) levels in progressive and nonprogressive patients with keratoconus (KCN).

Methods: Fifty-five patients with KCN (28 progressive and 27 nonprogressive) who were followed up for at least 12 months were recruited and separated into 2 groups according to corneal topographic progression criteria. Age- and sex-matched 30 healthy individuals formed the control group.

A comparison of three different tonometric methods in the measurement of intraocular pressure in the pediatric age group.

Introduction And Aim: To compare intraocular pressure (IOP) measurements obtained with non-contact tonometry (NCT), Icare rebound tonometry (IRT) and Goldmann applanation tonometry (GAT) in pediatric cases and to examine the effect of topical anesthesia on measurements obtained using IRT.

Materials And Methods: Pediatric cases in a healthy general condition and with ophthalmic examination findings within normal limits were included in the study. IOP measurements were taken with NCT and IRT devices in all cases.

ALTERED BLOOD AND AQUEOUS HUMOR LEVELS OF ASPROSIN, 4-HYDROXYNONENAL, AND 8-HYDROXY-DEOXYGUANOSINE IN PATIENTS WITH DIABETES MELLITUS AND CATARACT WITH AND WITHOUT DIABETIC RETINOPATHY.

Purpose: Diabetic retinopathy (DRP) is the formation of edema and small vessels in the retina due to high blood glucose levels. Asprosin is a hormone that stimulates the release of glucose from the liver into the circulation. Considering the relationship between oxidative stress and DRP, our study aimed to determine the levels of the oxidative stress markers 4-hydroxynonenal (4-HNE) and 8-hydroxy-2'-deoxyguanosine (8-OHdG), as well as asprosin, in the blood and aqueous humor (Aq) of patients with and without DRP.

Alteration of Retinal Vessel Diameter of the Patients with Pseudoexfoliation and Optical Coherence Tomography Images.

: The aim of this study was to measure retinal vessel diameter using spectral domain optical coherence tomography (SD-OCT), and to compare patients with unilateral pseudoexfoliation syndrome (PEX) with controls.: 40 patients with pseudoexfoliation material (40+) eyes and (40-) eyes and 32 healthy controls was included study. Observation of pseudoexfoliative material on the anterior lens capsule or pupillar margin in one or both eyes was set as the diagnostic criteria for PEX.

Decorin, Tenascin C, Total Antioxidant, and Total Oxidant Level Changes in Patients with Pseudoexfoliation Syndrome.

Purpose: Pseudoexfoliation syndrome (PEX) is an eye disease that develops under the influence of regional population differences, genetic factors, age, and environmental factors and is characterized by visualization of a gray-white fibrogranular substance in the lens anterior capsule and/or pupil margin during anterior segment examination. The underlying biochemical mechanisms of the disease have not yet been fully elucidated. Therefore, this study was designed to show the changes in aqueous humor and blood serum levels of matrix metalloproteinases (decorin and tenascin C), total antioxidants (TAS), and total oxidants (TOS) in both cataract patients who have unilateral PEX material and cataract patients who do not have unilateral PEX material.

Influence of indoor and outdoor activities on progression of myopia during puberty.

The purpose of this study was to investigate whether time spent on indoor and outdoor activities or the other possible risk factors including age, gender, parental history, and initial refraction was associated with progression of myopia, during puberty. Fifty eyes of 50 myopic children aged 9-14 years were enrolled in the study. The parents were interviewed to determine the amounts of time in hours per day spent on reading and writing, using computer, watching TV, and outdoor activities (i.

Effect of pathological myopia on biomechanical properties: a study by ocular response analyzer.

Aim: To evaluate the ocular response analyzer (ORA) measurements of patients with pathological myopia in comparison with those of emmetropic control subjects, and to investigate the correlation between these ORA measurements and spherical equivalent (SE).

Methods: Measurements of 53 eyes of 53 subjects with pathological myopia (SE>-6.00 D) were compared with those of 60 eyes of 60 emmetropic controls.