Clinical trials: Mydriasis
Healthy
Study to Assess the Influence of Three Different α-antagonists and Placebo on the Extent of Weekly Phenylephrine-induced Mydriasis at Three Different Concentrations of Phenylephrine in Healthy Male Volunteers
The study was aimed to evaluate the pharmacological effect of different α-antagonists on phenylephrine induced pupil size in healthy male volunteers as pharmacological basis for Intraoperative floppy iris syndrome (IFIS)
- Trial name
- NCT02266537
- Testing
- Tamsulosin, Alfuzosin, Doxazosin
- Volunteers
- 97 people, healthy volunteers welcome
- Sponsor
- Boehringer Ingelheim
Pain, Acute, Anesthesia
Pupillary Dilation Reflex Assessment for Intraoperative Analgesic Titration.
In this double blinded randomized controlled study, the pupillary dilation reflex is used for as a nociceptive indicator for opioid administration during elective surgery under general anesthesia.
- Trial name
- PUP-AIT (NCT03248908)
- Testing
- Pupillary dilation reflex, Standard of care
- Where
- Belgium
- Volunteers
- 120 people
- Sponsor
- University Hospital, Antwerp
Intraocular Pressure
The Effect of Brimonidine on Intraocular Pressure When Dilating Routine Patients
This an interventional study looking at two different sequences of pre-operative eye drops, to determine which order is more effective in reducing intraocular pressure with pupil dilation.
- Trial name
- NCT03139708
- Testing
- Alphagan, Phenylephrine, Tropicamide
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Horner Syndrome
Exploration of Pupil Dilation in Horner's Patients Taking Flomax
This study is evaluating the pupil dilation of Horner's Patients who have ever taken an alpha blocker such as Tamsulosin. Patients will undergo eye dilation as would occur at a yearly eye examination, but their pupil dilation…
- Trial name
- NCT03615508
- Testing
- 10% phenylephrine
- Where
- 2 sites in United States
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Denver Health and Hospital Authority
Mydriasis, Dilation
Safety and Efficacy of Ophthalmic Phentolamine Mesylate to Reverse Pharmacologically Induced Mydriasis
The objectives of this study are: To evaluate the efficacy of Nyxol (phentolamine mesylate ophthalmic solution 1%) to expedite the reversal of pharmacologic mydriasis To evaluate the safety of Nyxol To evaluate the effect of…
- Trial name
- NCT04024891
- Testing
- Phentolamine Mesylate Ophthalmic Solution 1%
- Where
- 4 sites in United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Opus Genetics, Inc
Cataract
Optimal Method for Mydriasis in Cataract Surgery
Obtaining appropriate mydriasis prior to cataract surgery is an important variable in successful surgery. The current practice includes using topical anticholinergic and sympathomimetic agents in the preoperative area prior to…
- Trial name
- NCT02909140
- Testing
- Topical phenylephrine 2.5%, Topical cyclopentolate 1%, Intracameral Lidocaine 1%
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- Johns Hopkins University
Diabetes Mellitus
2.5% and 10% Phenylephrine for Mydriasis in Diabetic Patients With Darkly Pigmented Irides
To compare the clinical efficacy and systemic side effects between 2.5% and 10% phenylephrine for mydriasis in diabetic patient with darkly pigmented irides.
- Trial name
- NCT00501878
- Testing
- 2.5% or 10% phenylephrine
- Where
- Thailand
- Volunteers
- 100 people
- Sponsor
- Khon Kaen University
Sensorineural Hearing Loss
Cochlear Implanted Listening Effort and Hearing Attention
Cochlear implant users perceive mainly sound amplitude modulation cues. Processing of these amplitude modulations can be subject to interferences, so that the perception of a modulation in a target sound can be impaired by a…
- Trial name
- EffICAtt (NCT04733950)
- Testing
- Forced choice psychoacoustic task for the evaluation of modulation detection performance and selective auditory attention. (for both arm), Measurement of the pupil diameter for the evaluation of listening effort during speech perception
- Where
- France
- Volunteers
- 170 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Mydriasis
Study of the Safety, Efficacy and PK of EYN-1601 in Dilation of the Pupil
This is a Phase 2 study to investigate the safety, efficacy and pharmacokinetics of EYN-1601 for dilation of the pupil. A single microdose of EYN-1601 will be compared to single doses of commercially available phenylephrine…
- Trial name
- NCT02946125
- Testing
- MDD-administered EYN-1601, Phenylephrine 2.5% Eyedrop, Phenylephrine 10% Eyedrop
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Eyenovia Inc.
Cataract, Phacoemulsification
Intracameral Mydriasis Versus Topical Mydriasis in Cataract Surgery
The purpose is to determine if an intracameral solution of 0.2% tropicamide and 2% phenylephrine can dilate the pupil for cataract surgery as well as pre-operative topical 1% tropicamide and 5% phenylephrine.
- Conditions
- Cataract, Phacoemulsification, Mydriasis, Pseudoexfoliation Syndrome
- Trial name
- NCT00690222
- Testing
- Intracameral injection of mydriatic agent
- Where
- Canada
- Volunteers
- 80 people
- Sponsor
- Nova Scotia Health Authority
Retinopathy of Prematurity, Mydriasis
The Effects of Mydriatic Eye Drops in Retinopathy of Prematurity Examinations
Retinopathy of prematurity (ROP) is a retinal disorder of preterm neonates and a potential cause of blindness. As early diagnosis and treatment preserve vision, very low birth weight infants must be screened for ROP.
- Conditions
- Retinopathy of Prematurity, Mydriasis, Neonatal Disease, Analgesic Adverse Reaction
- Trial name
- NCT05880433
- Testing
- NIRS(INVOS 5100; Covidien Somanetics, Troy, MI
- Where
- Turkey (Türkiye)
- Volunteers
- 62 people
- Sponsor
- Istanbul Training and Research Hospital
Retinopathy of Prematurity
Efficacy and Safety of Mydriatic Microdrops Compared With Standard Drops for Retinopathy of Prematurity (ROP) Screening: a Pilot Randomized Clinical Trial
The purpose is to assess whether the use of microdrop instillation of phenylephrine 1.67% and tropicamide 0.33% maintains mydriatic efficacy while presents an improved safety profile compared with standard drops of phenylephrine…
- Trial name
- NCT04623684
- Testing
- Microdrop administration [phenylephrine 1.67% + tropicamide 0.33% (drop volume: 6-7 μL)], Standard drop administration [phenylephrine 1.67% + tropicamide 0.33% (drop volume: 28-34 μL)]
- Where
- Greece
- Volunteers
- 25 people
- Sponsor
- Aristotle University Of Thessaloniki
Mydriasis, Dilation
Safety and Efficacy of Nyxol (0.75% Phentolamine Ophthalmic Solution) to Reverse Pharmacologically-Induced Mydriasis (MIRA-3)
The objectives of this study are: To evaluate the efficacy of Nyxol to expedite the reversal of pharmacologically-induced mydriasis across multiple mydriatic agents with an emphasis on phenylephrine To evaluate the efficacy of…
- Trial name
- MIRA-3 (NCT05134974)
- Testing
- Phentolamine Ophthalmic Solution 0.75%, Phentolamine Ophthalmic Solution Vehicle
- Where
- 15 sites in United States
- Volunteers
- 368 people, healthy volunteers welcome
- Sponsor
- Opus Genetics, Inc
Mydriasis
Pharmacodynamics of a Fixed Dose Combination of 0.34% Tropicamide and 2.5% Phenylephrine Hydrochloride, Eye Drop, Solution
The objective of this study is to explore pharmacodynamic effects and safety of IMP 08P2002F0 for dilation of the pupil, a solution combining two mydriatic agents tropicamide and phenylephrine hydrochloride at the concentrations…
- Trial name
- SOLMYD-PD (NCT07075224)
- Testing
- IMP 08P2002F0, Mydriasert® insert
- Where
- 2 sites in Greece
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Unither Pharmaceuticals, France
Medication Delivery, Eye Drop Delivery
The Effect of Eyedrop Size on Pupillary Dilation Using the Nanodropper Bottle Adapter
The average drop size produced by standard eyedrop bottle exceeds the maximal capacity that the human eye are absorb topically. This excess leads to medication waste, increased costs, and greater risk of side effects.
- Trial name
- NCT06689904
- Testing
- Nanodropper, Standard eye drop bottle
- Where
- United States
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Sutter Health
Eye Diseases
Single Dose of 1% Tropicamide and 10% Phenylephrine for Pupillary Dilation
The purpose of this study is to compare the efficacy on pupillary dilation between the single dose versus the three doses of 1% tropicamide with 10% phenylephrine for complete ocular examination.
- Trial name
- NCT00120432
- Testing
- 1% tropicamide and 10% phenylephrine
- Where
- Thailand
- Volunteers
- 80 people
- Sponsor
- Khon Kaen University
Retinopathy of Prematurity
A Study Investigating Whether Low Dose Eyedrops for Pupil Dilation is as Effective and Safe as Standard Dose Eyedrops in Examination for Retinopathy of Prematurity.
A prospective, randomized controlled study was conducted from August, 2022 to March, 2023 in the neonatal intensive care unit in Queen Mary Hospital, Hong Kong.
- Trial name
- NCT06288321
- Testing
- Microdrop Mydrin-P, Standard Mydrin-P
- Where
- Hong Kong
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- The University of Hong Kong
Critical Illness
The Use of Nociception Flexion Reflex and Pupillary Dilatation Reflex in ICU Patients.
The aim of the study was to describe the feasibility of the nociception flexion reflex and the pupillary dilatation reflex as objective pain assessment tools in the Intensive Care Unit (ICU).
- Trial name
- NCT02916004
- Testing
- Measurement of NFR and PDR
- Where
- Belgium
- Volunteers
- 40 people
- Sponsor
- University Hospital, Antwerp
Pupil Dilation Prior to Cataract Surgery In-patient, Pupil Dilation Prior to Cataract Surgery Out-patient
Preoperative Cataract Pupillary Dilation: Inpatient At The Ambulatory Surgery Center vs Outpatient Dilation Prior To Arrival At The Ambulatory Surgery Center
This study was done to compare efficacy, safety and efficiencies of various methods of pupil dilation prior to cataract surgery.
- Trial name
- NCT01169688
- Testing
- Pupil dilation with phenylephrine 10% vs cyclopentolate 2%
- Volunteers
- 50 people
- Sponsor
- Northwest Kansas Surgery Center
Cataract
Lidocaine Usage for Pupil Dilatation (Mydriasis)
The purpose of this study is to determine if the mydriatic effect of intracameral lidocaine 1% is as effective as topical cyclopentolate 1% and phenylephrine 10% for achieving effective mydriasis during phacoemulsification…
- Trial name
- NCT01170130
- Testing
- Lidocaine 1% (sterile)
- Volunteers
- 100 people
- Sponsor
- Carmel Medical Center