Laser zaps away reading glasses for Post-Cataract patients?
NCT ID NCT07384182
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested a low-energy femtosecond laser (the Perfector device) to treat presbyopia in 19 people who already had monofocal lens implants from cataract surgery. The goal was to improve near and intermediate vision without harming distance vision. Participants were measured on how well they could read letters at 40 cm and 66 cm, and at 4 meters. The study is complete, but because it was small and had no comparison group, the results are preliminary.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- femtosecond laser device (Perfector)
- What this could lead to
- If it works, this could offer a way to improve reading vision without glasses for people who already have standard lens implants after cataract surgery.
- What could go wrong
- This was a very small study (19 people) with no control group, so results may not apply widely. The procedure involves attaching a device to the eye with suction, which carries some risk of discomfort or minor injury.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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19 people
The number who actually took part.
- Started
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Oct 2023
- Finished
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Nov 2024
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Ability to understand study requirements, follow study instructions and to return for required study follow-up visits as confirmed by provision of written informed consent; 2. Subject has undergone cataract surgery and has had a monofocal lens implanted in both eyes; 3. Subject has no significant residual visual issues which the Investigator believes would make the patient ill suited for the Treatment.; and 4. Both eyes have CDVA vision of 20/25 or better at 4m. Exclusion Criteria: 1. Subjects not able to complete the informed consent form; 2. Clinically significant corneal abnormalities including corneal dystrophy (e.g., epithelial, stromal, or endothelial dystrophy), inflammation, keratitis, keratoconjunctivitis, keratouveitis, keratopathy, keratectasia or edema per the Investigator's expert medical opinion; 3. Previous corneal surgery; 4. Previous refractive surgery or proposed refractive surgery procedures throughout the entire duration of the subjects' participation in the clinical study (including, but not limited to LASIK, astigmatic keratotomy and limbal relaxing incisions); 5. History of or current retinal conditions or predisposition to retinal conditions including retinal detachment, diabetic retinopathy, age related macular degeneration which are assessed to by investigator to confound outcomes; 6. Amblyopia; 7. History of or current anterior or posterior segment inflammation of any etiology, or any disease-producing an inflammatory reaction in the eye (e.g., iritis or uveitis); 8. Optic nerve atrophy; 9. Iris neovascularization; 10. Subjects with diagnosed degenerative eye disorders (e.g., macular degeneration or other retinal disorders); 11. Uncontrolled glaucoma; 12. Any subject currently participating in another investigational drug or device studies; and 13. Any subject disqualified by the Principal Investigator or Medical Monitor for any ocular issue.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Gemini Eye Clinic
Zlín, Czech Republic, 760 01, Czechia
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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