Cornea

6

Review clinical trials related to Cornea. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Recruiting

Impact of GLP-1 Receptor Agonists on Dry Eye Disease in Patients With Type 2 Diabetes Mellitus and Obesity

Diabetes mellitus (DM), prediabetes, and obesity are emerging as major global public health problems, with their epidemic spread continuously increasing over the past decades. The occurrence of diabetic retinopathy, cataract, glaucoma, and ocular surface disease in patients with diabetes mellitus has been extensively investigated in several studies. However, mild ocular surface disorders, such as dry eye disease, have often been overlooked, with a previous study showing that 51.3% of diabetes-related dry eye disease cases remained underdiagnosed. Among systemic diseases, diabetes mellitus and obesity have been associated with an increased risk of developing dry eye disease. Chronic hyperglycemia in diabetes leads to microvascular damage, including corneal neuropathy and reduced tear production, conditions that can disrupt ocular surface health, while systemic inflammation and meibomian gland dysfunction also contribute to this process. However, the effect of newer classes of antidiabetic medications, including glucagon-like peptide-1 receptor agonists (GLP-1 RAs), on ocular surface health remains insufficiently understood. The aim of this prospective cohort study is to evaluate the effects of GLP-1 receptor agonists on dry eye disease in patients with type 2 diabetes mellitus and obesity through the assessment of ocular surface parameters, such as tear film break-up time, Schirmer test results, as well as potential changes in corneal topography.

Participants needed: 100
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: Attikon HospitalUpdated: Jun 2, 2026Locations: 1
Eligibility criteria

Age ≥18 years. [+2]

Pregnant or breastfeeding patients. [+5]

Status: Recruiting

Acute Ocular Effects of Cigarette Smoking

This prospective study aims to evaluate the short-term effects of smoking on corneal tomographic and biometric measurements in healthy adults. After baseline examinations and measurements are taken in both smoking and non-smoking participants, the same measurements will be repeated after 10 minutes of external exposure, and within-group and between-group changes will be compared. The aim of the study is to determine whether acute smoking exposure leads to measurable immediate changes in corneal tomographic and biometric parameters.

Participants needed: 90
Trial details
Age: 18-60Biological sex: AllType: ObservationalSponsor: Istanbul UniversityUpdated: May 12, 2026Locations: 1
Eligibility criteria

Healthy adults aged 18 to 60 years [+3]

History of ocular surgery or ocular trauma [+8]

Status: Recruiting

fMRI and IVCM Cornea Microscopy of CXL in Keratoconus

Evaluation of neuroplasticity of pain pathways and corneal afferent nerve regeneration following corneal crosslinking (CXL) in keratoconus patients using fMRI and corneal In Vivo Confocal Microscopy (IVCM).

Participants needed: 60
Trial details
Age: 8-35Biological sex: AllType: ObservationalSponsor: Boston Children's HospitalUpdated: Dec 19, 2025Locations: 1
Eligibility criteria

Age 8-35 years [+9]

Claustrophobic [+5]

Status: Recruiting

OCT Vibrography for Biomechanical Properties of Tissues

The overall goal of this study is to develop OCT Vibrography (aka OCT elastography) as a novel tool for measuring biomechanical properties of human tissues in vivo.

Participants needed: 90
Trial details
Age: 18-75Biological sex: AllType: InterventionalSponsor: Massachusetts General HospitalUpdated: Oct 23, 2025Locations: 1
Eligibility criteria

Subjects with history of eye diseases, and previous eye surgeries. [+5]

Status: Recruiting

INTACS for Non Ectatic With High Cylinder

Intra-corneal rings implantation for correcting high cylinder errors in non ectatic corneas

Participants needed: 50
Trial details
Age: 18-60Biological sex: AllType: InterventionalSponsor: Elshimaa A.MateenUpdated: May 14, 2025Locations: 1
Eligibility criteria

Non ectatic corneas with high cylinder error

Corneal ectasia

Status: Recruiting

Accuracy of Corneal Astigmatism in Different Region Modes

To analyze the difference between measured total corneal astigmatism and actual corneal astigmatism under different region modes and optimize the region setting.

Participants needed: 70
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: Wenzhou Medical UniversityUpdated: Jul 23, 2024Locations: 1
Eligibility criteria

Age ≥ 18 years [+2]

Corneal diseases or severe irregular astigmatism (e.g., pterygium, keratoconus),... [+5]