Refractive error, ocular and general parameters and ophthalmic diseases. The Beijing Eye Study

Objective  

To assess relationships between refractive error and ocular and general parameters.     

Retinal straylight and light distortion phenomena in normal and post-LASIK eyes

Purpose  

To assess the relationship between measures of light distortion and retinal straylight in normal and post-LASIK subjects.     

Expression of Epiplakin1 in the developing and adult mouse retina

Purpose  

To assess the expression of Epiplakin1 (Eppk1) in the developing and adult mouse retina.     

Comparison of the biometric values obtained by two different A-mode ultrasound devices (Eye Cubed vs. PalmScan): A Transversal, descriptive, and comparative study

Background  

To assess the reliability of the measurements obtained with the PalmScan™, when compared with another standardized A-mode ultrasound device, and assess the consistency and correlation between the two methods.     

Intra-examiner repeatability and agreement of corneal pachymetry map measurement by time-domain and Fourier-domain optical coherence tomography

Background  

To assess the intra-examiner repeatability and agreement of corneal pachymetry maps measured by time-domain (Visante OCT) and Fourier-domain optical coherence tomography (RTVue OCT).     

Prevalence of dry eye syndrome and diabetic retinopathy in type 2 diabetic patients

Background  

This study was performed to assess the prevalence of dry eye syndrome and diabetic retinopathy (DR) in type 2 diabetic patients and their contributing factors.     

Early changes in corneal edema following torsional phacoemulsification using anterior segment optical coherence tomography and Scheimpflug photography

Purpose  

To assess corneal edema after torsional phacoemulsification using anterior segment optical coherence tomography (AS-OCT) and Scheimpflug photography (Pentacam).     

The NEI VFQ-25 vision-related quality of life and prevalence of eye disease in a working population

Purpose  

To apply the National Eye Institute 25-item Visual Function Questionnaire (VFQ-25) to a large group of working people and assess the prevalence of eye disease.     

The importance of central corneal thickness measurements and decision making in general ophthalmology clinics: a masked observational study

Background  

To assess the impact of knowing central corneal thickness (CCT) on glaucoma management in a United Kingdom district general hospital.     

Retinopathy in hepatitis C patients due to combination therapy with pegylated interferon and ribavirin

Background  

To assess the nature, incidence, and risk factors of retinopathy associated with pegylated interferon and ribavirin combination therapy in chronic hepatitis C patients.     

Influence of macular microcirculation and retinal thickness on visual acuity in patients with branch retinal vein occlusion and macular edema

Purpose  

To investigate perifoveal capillary blood flow velocity and retinal thickness at the central fovea in patients with branch retinal vein occlusion (BRVO) and macular edema and to assess their relation with visual acuity and visual prognosis.     

Corneal endothelial cell loss after trabeculectomy or after phacoemulsification, IOL implantation and trabeculectomy in 1 or 2 steps

Background  

To assess endothelial cell damage after glaucoma surgery and combined glaucoma and cataract surgery in one or two steps using confocal biomicroscopy.     

Matrix metalloproteinases and their tissue inhibitors after selective laser trabeculoplasty in pseudoexfoliative secondary glaucoma

Background  

The aim of this study was to assess changes in metalloproteinases (MMP-2) and tissue inhibitor of metalloproteinases (TIMP-2) following selective laser trabeculoplasty (SLT) in patients with pseudoexfoliative glaucoma (PEXG).     

Effect of corneal astigmatism on intraocular pressure measurement using ocular response analyzer and Goldmann applanation tonometer

Purpose  

To assess the effect of corneal astigmatism on intraocular pressure (IOP) measurements using an Ocular Response Analyzer (ORA) and a Goldmann applanation tonometer (GAT).     

Repeatability of nerve fiber layer thickness measurements in patients with glaucoma and without glaucoma using spectral-domain and time-domain OCT

Background  

The aim of this work is to assess the repeatability of spectral-domain-OCT (SD-OCT) retinal nerve fiber layer thickness (RNFL) thickness measurements in a non-glaucoma group and patients with glaucoma and to compare these results to conventional time-domain-OCT (TD-OCT).     

Association between clinical diagnostic tests and health-related quality of life surveys in patients with dry eye syndrome

Purpose  

This study was performed to assess the impact of dry eye on patients’ quality of life (QOL) and to analyze the association between subjective symptoms and ocular surface findings of dry eye.     

The ChromaTest,a digital color contrast sensitivity analyzer,for diabetic maculopathy: a pilot study

Background  

To assess the ability of the Chromatest in investigating diabetic maculopathy.     

Effect of menthol on ocular drug delivery

Background  

To assess how safe and effective it is to use menthol as a permeability enhancer in ophthalmic drug delivery systems.     

Heavier molecular weight ocular viscoelastic devices and timing of post-operative review following cataract surgery

Background  

To assess the safety of abandoning the next day post-operative review in preference for assessment only 2 hours post-surgery for both phacoemulsification and extracapsular surgery with heavier molecular weight ocular viscoelastic devices (OVD).     

Outcomes of different management options for malignant glaucoma: a retrospective study

Background  

To assess the outcomes of the various medical and surgical treatment options for malignant glaucoma.