BACKGROUND Central corneal thickness greater than 0.520 mm causes true intraocular pressure to be overestimated when the technique of applanation tonometry is used to measure intraocular pressure. OBJECTIVE To compare the corneal thickness measurements of patients enrolled in a study of ocular hypertension with those of age-matched control subjects with normal intraocular pressure. METHODS ...

Corresponding Author: Yan Zhang Department of Ophthalmology, The 2nd Teaching Hospital of Jilin University, 218 Ziqiang Street Changchun 130041, China Email: [email protected] Abstract: Corneal thickness is an important parameter of the structure of an eyeball. Prior to cornea refractive surgery, the measurement of corneal thickness has been given general importance. With the development of m...

Cystinosis is a rare autosomal recessive metabolic disorder in which non-protein cystine accumulates within cellular lysosomes owing to a defect in lysosomal cystine transport. The pathognomonic ocular manifestation of cystinosis is the deposition of distinctive iridescent crystals in the cornea, not associated with any inflammatory response or recognised change in corneal function. We measured...

Purpose To compare the corneal clarity measurement between penetrating keratoplasty (PK) and deep anterior lamellar keratoplasty (DALK) in patients with keratoconus, using densitometry software for the Oculus Pentacam. Methods A retrospective comparative study was carried out at Manchester Royal Eye Hospital. Data were collected 12-18 months after corneal transplantation for keratoconus, incl...

PURPOSE The aim of this study was to compare 4 methods of central corneal thickness (CCT) measurements in terms of their agreement, repeatability, and measurement time. METHODS CCT was measured in 184 eyes of 92 healthy subjects by the same examiner. The methods used were as follows: noncontact specular microscopy (SM; Topcon SP-3000P; Topcon Corporation, Tokyo, Japan), Pentacam rotating Sche...

Most techniques measuring corneal biomechanics in vivo are biased by side factors. We demonstrate the ability of optical coherence tomographic (OCT) vibrography to determine corneal material parameters, while reducing current prevalent restrictions of other techniques (such as intraocular pressure (IOP) and thickness dependency). Modal analysis was performed in a finite-element (FE) model to st...

Purpose: The feasibility of standardized treatment for fungal keratitis was explored through the analysis of results. Methods: The medical records of 508 hospitalized patients with fungal keratitis in Qingdao eye hospital of Shandong province eye institute from January 2008 to December 2012 were analyzed in this retrospective study. Results: Among total 508 cases (all simple eye), 21 cases (4.1...

PURPOSE To determine the thickness of Bowman's layer (BL) in vivo in a healthy population and to determine its variation with age. METHODS Eighty-two subjects aged 15 to 88 years with clear, healthy corneas were examined bilaterally with laser scanning in vivo confocal microscopy (IVCM). Bowman's layer thickness was determined from IVCM images of anterior and posterior BL boundaries. For a gi...

Background: This study aimed to investigate the diagnostic value of pachymetry parameters measured by RTVueOCT for keratoconus. Methods: 74 patients with 118 eyes diagnosed with keratoconus were enrolled in keratoconus group and 60 patients with normal 120 eyes as health controls. Pachymetry parameters were measured. The major indicators were tested: 1) S-I value: difference between the mean su...