Study of Clinical Performance of Corneal Topography Measurement Using an

See also
	Status	Clinical Trial	Phase
	Recruiting	`NCT05549713` - The Effect of Upper Blepharoplasty on Vision Quality in the Early Postoperative Period
	Not yet recruiting	`NCT05812508` - Comparison Between Bare Scleral Technique and Conjunctival Auto-graft on Corneal Topography After Pterygium Surgery

See also

Status

Clinical Trial

Phase

Recruiting

NCT05549713 - The Effect of Upper Blepharoplasty on Vision Quality in the Early Postoperative Period

Not yet recruiting

NCT05812508 - Comparison Between Bare Scleral Technique and Conjunctival Auto-graft on Corneal Topography After Pterygium Surgery

Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.

Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.

Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

NCT number	NCT01861925
Study type	Observational
Source	Haag-Streit AG
Contact
Status	Completed
Phase	N/A
Start date	June 2013
Completion date	July 2013

Study of Clinical Performance of Corneal Topography Measurement Using an Optical Biometer

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms