Related Experiment Video
Updated: Mar 29, 2026
05:05
Ultrasound Cyclo Plasty in Eyes with Glaucoma
Published on: January 26, 2018
12.8K
Ethics of Placebo Procedures in Ophthalmic Surgical Trials
Maxwell W Dixon1, Cagri G Besirli2
1Currently a medical student at University of Michigan Medical School, Ann Arbor.
JAMA Ophthalmology
|December 4, 2015
Abstract
No abstract available in PubMed .
Related Concept Videos
01:11Blinding
4.1K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
4.1K
02:07Blind Procedures
13.9K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
13.9K
01:54The Placebo Effect
7.1K
The placebo effect occurs when people's expectations or beliefs influence or determine their experience in a given situation. In other words, simply expecting something to happen can actually make it happen.
7.1K
01:23Ophthalmic Drug Delivery Systems
212
Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
212