Effect of Artificial Tears on Ocular Biometry Parameters

Launched by HE EYE HOSPITAL · Oct 22, 2024

Keywords

ClinConnect Summary

This clinical trial is studying how artificial tears can help improve the accuracy of eye measurements in people with dry eye disease. When the tear film, which keeps our eyes moist, is unstable, it can make it difficult to get precise measurements needed for eye surgeries, such as when choosing the right lens to insert in the eye. The trial aims to see if using artificial tears can enhance the surface of the eye, making these measurements more consistent. They plan to enroll 100 participants for this study.

To participate, you must be at least 18 years old and able to follow the treatment schedule. However, certain conditions may exclude you, like having cloudy eyes, severe vision issues, or recent eye surgeries. If you join the trial, you can expect to use artificial tears as part of the study and have your eye measurements taken before and after the treatment to see how it affects the results. This trial is not yet recruiting participants, so there will be more information available later.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • (1) age ≥18 years,(2) able and willing to comply with the treatment schedule.
• Exclusion Criteria:
• • 1. The eyes cannot fixate on the fixation lamp (such as children, nystagmus diseases, severe low vision, inattention, etc.) and cannot act according to the user's instructions and sit in the front of the equipment (the forehead or lower song is injured so that it cannot be supported on the forehead / lower song bracket)
• • 2. The eyes are cloudy with optical media (such as corneal opacity, central corneal scar, mature cataract, posterior chamber bag opacity, vitreous hemorrhage, etc.).
• • 3. The eyelid is completely closed or too small (drooping, relaxation) resulting in complete or partial occlusion of the cornea
• • 4. Just after contact measurement or examination, use a corneal local anesthesia solution. (IOL Master 700 should avoid using local anesthetic before all contact examinations)
• • 5. Tear film deformation (lack of specular reflection of the cornea during corneal curvature measurement), the severity of grade IV dry eye, and whether eye drops were used 24 hours before the examination.
• • 6. Any corneal lesions (corneal irregularity, corneal scar or corrosive burning, severe irregular astigmatism of cornea)
• • 7. Fundus lesions (changes in the anatomical morphology of retinal macular fovea during axial length measurement, such as retinal detachment, edema, ulcer, etc.)
• • 8. Patients with ocular trauma, surgery, and excessive photosensitivity, such as photodynamic therapy (PDT), were excluded.
• • 9. using eye drops (0.1% Sodium hyaluronate) allergic patients