Laser Iridoplasty
Opening the Eye’s Drainage Angle by Reshaping the Peripheral Iris
Laser iridoplasty uses carefully placed laser applications to contract the outer portion of the iris and pull it away from
the eye’s drainage angle. It may be considered when the angle remains narrow or closed because of the iris position,
including selected patients with plateau iris.
At Desert Vision Surgery, Dr. Keith Tokuhara evaluates the drainage angle, iris anatomy, eye pressure, prior laser
treatment, lens position, and overall eye health before recommending treatment.
What Is Laser Iridoplasty?
Reshaping the Iris to Open the Drainage Angle
Laser iridoplasty places low-energy laser applications around the peripheral iris. As the treated tissue contracts, it pulls the iris away from the drainage angle, creating more space for fluid to reach the eye’s natural outflow system.
The drainage angle is located where the iris meets the cornea near the front of the eye. It contains the trabecular meshwork, which helps aqueous fluid leave the eye.
When the peripheral iris crowds or covers this area, fluid may not drain normally. Pressure can rise and place the optic nerve at risk.
Laser iridoplasty is usually performed with an argon laser or another suitable photocoagulation laser. It does not remove iris tissue or create a hole through the iris. Its purpose is to change the contour of the outer iris so the drainage angle becomes more accessible.
Iridoplasty is commonly considered a second-line treatment when areas of appositional angle closure remain after laser peripheral iridotomy. It may also be used in selected cases of plateau iris or acute angle closure.
When May Laser Iridoplasty Be Needed?
Treating Persistent Narrowing of the Drainage Angle
Laser iridoplasty may be considered when the peripheral iris continues to crowd or block the drainage angle, especially after laser iridotomy has already relieved pupillary block. It is most closely associated with plateau iris anatomy and persistent appositional angle closure.
Treatment may be discussed for patients with:
- Plateau iris configuration or plateau iris syndrome
- Drainage angles that remain narrow after laser peripheral iridotomy
- Areas where the iris continues to touch the trabecular meshwork
- Selected cases of acute angle closure
- Angle narrowing caused by certain iris or ciliary body cysts
- Small eyes with crowded anterior segment anatomy
- A need to open the angle enough for further examination or treatment
Laser iridoplasty is generally most useful when the iris is pressing against the drainage angle without permanent scar tissue fixing the structures together.
It may not reopen areas where peripheral anterior synechiae have permanently attached the iris to the drainage angle. The extent of permanent closure helps determine whether laser treatment is likely to provide enough benefit.
How Does Iridoplasty Differ From Iridotomy and Iris Repair?
Understanding Procedures With Similar Names
Iridoplasty reshapes the peripheral iris to widen the drainage angle. Iridotomy creates a small opening through the iris to relieve pupillary block. Iris repair reconstructs torn, detached, or irregular iris tissue using surgery.
| Procedure | Primary purpose | How it works | Common indication | Does it create an opening in the iris? |
|---|---|---|---|---|
| Laser iridoplasty | Pull the peripheral iris away from the drainage angle | Laser applications contract the outer iris and change its contour | Plateau iris or persistent angle narrowing after iridotomy | No |
| Laser peripheral iridotomy | Relieve pupillary block and improve fluid movement between the back and front chambers of the eye | A laser creates a small full-thickness opening in the peripheral iris | Primary angle closure or significant risk of angle closure caused by pupillary block | Yes |
| Iris repair or pupilloplasty | Reconstruct damaged iris tissue or reshape an abnormal pupil | Microsurgical sutures close tears, reattach tissue, or reshape the pupil | Trauma, iridodialysis, surgical injury, or an enlarged irregular pupil | Not usually |
| Lens extraction | Reduce crowding caused partly by the natural lens | The natural lens is removed and replaced with an artificial implant | Cataract or angle closure where lens anatomy contributes to crowding | No |
Laser peripheral iridotomy addresses a pressure difference caused by pupillary block. Iridoplasty addresses the position and contour of the peripheral iris. A patient may need both procedures when more than one mechanism contributes to angle closure.
What Is Plateau Iris?
When the Drainage Angle Remains Narrow After Iridotomy
Plateau iris occurs when structures behind the iris push its outer portion forward, crowding the drainage angle even after a laser iridotomy has relieved pupillary block. Iridoplasty may help pull the peripheral iris away from the angle in selected patients.
In a typical pupillary-block pattern, pressure behind the iris causes it to bow forward. Laser iridotomy creates another route for fluid to pass through the iris, which usually allows the iris to flatten.
With plateau iris anatomy, the central anterior chamber may appear reasonably deep, but the outer iris remains elevated near the drainage angle. This can leave the angle narrow or closed even when the iridotomy is open.
Some patients have plateau iris configuration without high pressure or optic nerve damage. Plateau iris syndrome generally refers to persistent angle closure or pressure concerns after a functioning iridotomy.
Dr. Tokuhara evaluates the angle directly to determine whether the iris remains crowded and whether iridoplasty is likely to improve access to the natural drainage system.
How Is the Eye Evaluated Before Iridoplasty?
Confirming Why the Drainage Angle Is Narrow
Before recommending iridoplasty, Dr. Tokuhara determines whether the angle is being blocked by the shape of the peripheral iris, pupillary block, permanent scar tissue, lens crowding, or another structural condition. The procedure is useful only when it addresses the actual cause of narrowing.
The evaluation may include:
- Current and previous eye pressure measurements
- Gonioscopy to examine the drainage angle
- Confirmation that a previous iridotomy remains open
- Assessment for plateau iris anatomy
- Examination for peripheral anterior synechiae
- Anterior chamber depth
- Corneal clarity and endothelial health
- Iris configuration
- Natural lens or intraocular lens position
- Cataract severity
- Optic nerve examination
- Visual field testing
- Optical coherence tomography
- Previous episodes of angle closure
- Prior laser, cataract, glaucoma, or retinal procedures
- Medication use and treatment response
Anterior segment optical coherence tomography or ultrasound biomicroscopy may sometimes provide additional information about the iris, ciliary body, and drainage-angle anatomy.
If pupillary block remains the primary problem, laser iridotomy may be needed. If the natural lens contributes substantially to crowding, cataract or clear-lens extraction may be a more appropriate treatment. If the angle is permanently closed by scar tissue, another glaucoma procedure may be required.
How Is Laser Iridoplasty Performed?
Applying Laser Treatment to the Peripheral Iris
Laser iridoplasty is generally performed as an outpatient procedure.
Before treatment, numbing drops are placed in the eye. Additional drops may be used to constrict the pupil and reduce the chance of a temporary pressure increase.
A special contact lens may be placed on the eye to help Dr. Tokuhara view and treat the peripheral iris. Low-energy laser applications are then placed around the outer iris.
The treatment creates controlled contraction rather than cutting through the tissue. As the peripheral iris contracts, it moves away from the drainage angle.
The procedure commonly involves:
- Checking the eye pressure.
- Applying numbing and pressure-control drops.
- Positioning a treatment lens on the eye.
- Applying spaced laser spots around the peripheral iris.
- Confirming visible tissue contraction and improved angle access.
- Rechecking eye pressure after treatment.
- Prescribing anti-inflammatory drops when appropriate.
Patients may see flashes of light during the procedure and notice temporary blur afterward. They should arrange transportation if their vision is affected or the practice recommends that they not drive.
Can Iridoplasty Replace Laser Iridotomy?
No. The procedures address different mechanisms of angle closure.
Laser iridotomy creates a small opening through the iris so fluid can move more freely from behind the iris to the front of the eye. It is used when pupillary block contributes to angle closure.
Iridoplasty does not create that opening and does not eliminate pupillary block. It changes the contour of the peripheral iris.
When pupillary block is present, laser iridotomy usually remains necessary. Iridoplasty may then be considered if the angle stays narrow because the outer iris continues to crowd the drainage structures.
Can Iridoplasty Lower Eye Pressure?
Iridoplasty may lower eye pressure when angle crowding prevents aqueous fluid from reaching the natural drainage system. The response depends on the cause and duration of the angle closure.
The procedure may provide short-term pressure reduction in selected acute angle-closure cases. Its long-term pressure-lowering effect is less predictable, particularly in chronic angle closure. Current reviews have found insufficient evidence to conclude that iridoplasty consistently provides lasting pressure control for chronic angle-closure glaucoma.
Some patients may still need:
- Glaucoma eye drops
- Laser peripheral iridotomy
- Cataract or lens surgery
- Additional laser treatment
- Minimally invasive glaucoma surgery
- Trabeculectomy
- A glaucoma drainage implant
- Continued optic nerve and visual field monitoring
The goal may be to open the angle, reduce immediate pressure, prevent additional closure, or make another treatment possible. It is not always to eliminate glaucoma medication.
Who May Not Be a Candidate for Iridoplasty?
Iridoplasty may not be appropriate when the expected benefit is limited or the laser cannot be applied safely.
The procedure may be unsuitable when:
- Severe corneal swelling prevents a safe view of the iris
- The anterior chamber is extremely shallow or flat
- Active inflammation or uveitis is present
- Neovascular glaucoma is causing angle closure
- Iridocorneal endothelial syndrome affects the angle
- Extensive permanent scar tissue has closed the angle
- The iris tissue cannot respond adequately to laser contraction
- Lens position is the main cause of crowding
- Another glaucoma procedure is more likely to reach the target pressure
The treatment decision depends on the complete anatomy and health of the eye, rather than the appearance of the iris alone.
What Is Recovery Like After Laser Iridoplasty?
Monitoring Eye Pressure and Inflammation
Recovery is generally brief because iridoplasty is an outpatient laser procedure rather than incisional surgery. Eye pressure and inflammation still require monitoring because temporary pressure elevation, irritation, or blurred vision can occur after treatment.
Patients may receive anti-inflammatory drops for several days. Glaucoma drops may be continued or adjusted depending on the pressure response.
Follow-up may evaluate:
- Eye pressure
- Inflammation
- Corneal clarity
- Drainage-angle width
- Iris response to treatment
- Patency of any previous iridotomy
- Continued need for glaucoma medication
- Optic nerve and visual field status
Patients may experience temporary:
- Blurred vision
- Mild irritation
- Redness
- Light sensitivity
- Headache
- Awareness of the treated eye
Patients should seek prompt care for severe eye pain, nausea, worsening redness, sudden vision loss, persistent halos, or another significant change.
What Are the Risks of Laser Iridoplasty?
Laser iridoplasty avoids an incision, but it still carries risks.
Potential complications may include:
- Temporary eye pressure elevation
- Inflammation
- Corneal irritation or burns
- Damage to corneal endothelial cells
- Iris atrophy
- Small areas of iris tissue damage
- An irregular or enlarged pupil
- Light sensitivity
- Incomplete opening of the drainage angle
- Return of angle narrowing
- Continued need for glaucoma treatment
- Rare injury to nearby eye structures
A rare complication called Urrets-Zavalia syndrome can leave the pupil fixed and enlarged, causing light sensitivity and a visible change in pupil appearance. Reported complications also include corneal burns, iris damage, and significant inflammation.
Dr. Tokuhara discusses the expected benefit, limitations, and individual risks before treatment.
Why Choose Desert Vision Surgery for Iridoplasty?
Anterior Segment Planning Based on the Cause of Angle Closure
Desert Vision Surgery evaluates iridoplasty as part of a complete anterior segment and eye-pressure plan. A narrow angle can result from several different anatomical mechanisms, and each may require a different treatment.
Patients choose Desert Vision Surgery for:
- Detailed evaluation of narrow and closed drainage angles.
- Assessment for plateau iris.
- Gonioscopic examination of the drainage anatomy.
- Review of previous laser peripheral iridotomy.
- Evaluation of permanent scar tissue within the angle.
- Attention to the cornea, iris, lens, retina, and optic nerve.
- Assessment of cataract or lens-related crowding.
- Coordination of laser, cataract, and glaucoma care.
- Planning for previously operated eyes.
- Retina-informed clinical judgment.
- Clear discussion of short-term and long-term expectations.
- Recommendations based on the cause of angle closure.
Desert Vision Surgery serves patients across Rancho Mirage, Palm Springs, and the greater Coachella Valley, providing specialized anterior segment evaluation for persistent narrow angles and plateau iris configuration.
When Should a Physician Refer a Patient for Iridoplasty?
Referral for Persistent or Complex Angle Narrowing
Desert Vision Surgery welcomes referrals for plateau iris, persistent angle closure after patent iridotomy, recurrent angle crowding, or complex narrow-angle disease. Please include gonioscopy findings, pressure history, prior treatment records, imaging, glaucoma testing, medications, and lens status when available.
How Can I Schedule an Iridoplasty Consultation?
If your drainage angles remain narrow after iridotomy or you have plateau iris, Dr. Tokuhara can determine whether iridoplasty, cataract
surgery, or another glaucoma treatment is appropriate.
Frequently Asked Questions
About Iridoplasty
What is laser iridoplasty?
Laser iridoplasty applies low-energy laser treatment to the peripheral iris. The treated tissue contracts and pulls away from the eye’s drainage angle.
Is iridoplasty the same as iris repair?
No. Iridoplasty is a laser treatment used to change the shape of the peripheral iris and open the drainage angle. Iris repair uses surgery to reconstruct torn, detached, missing, or irregular iris tissue.
Is iridoplasty the same as laser iridotomy?
No. Iridotomy creates a small opening through the iris to relieve pupillary block. Iridoplasty does not create a hole. It contracts the peripheral iris to move it away from the drainage angle.
Why might I need iridoplasty after an iridotomy?
An iridotomy can relieve pupillary block, but the drainage angle may remain narrow because of plateau iris or another anatomical cause. Iridoplasty may help move the peripheral iris away from the angle.
What is plateau iris?
Plateau iris is an anatomical configuration in which structures behind the iris push its outer portion toward the drainage angle. The angle may remain narrow even after a successful iridotomy.
Does iridoplasty cure glaucoma?
No. It may improve access to the drainage angle and lower pressure in selected patients, but it does not reverse optic nerve damage or eliminate the need for continued glaucoma monitoring.
Will I still need glaucoma drops?
Possibly. Medication needs depend on the pressure response, glaucoma severity, target pressure, and whether other drainage damage is present.
Is iridoplasty painful?
Numbing drops are used before treatment. Patients may feel mild pressure or discomfort from the contact lens and see flashes from the laser.
How long does the procedure take?
The laser treatment itself is generally brief, although the full visit takes longer because of preparation, pressure checks, and post-treatment monitoring.
How quickly can I return to normal activities?
Many patients return to routine activities soon after treatment. Temporary blur or irritation may affect driving and other activities on the day of the procedure.
Can the drainage angle narrow again?
Yes. The effect may decrease over time, and other anatomical or scarring changes can continue. Follow-up examinations remain important.
What happens if iridoplasty does not open the angle enough?
Dr. Tokuhara may discuss medication, cataract or lens surgery, another laser procedure, or glaucoma surgery based on the cause of closure and the target eye pressure.
About Dr. Keith Tokuhara
Dr. Keith Tokuhara is a board-certified ophthalmologist practicing in Rancho Mirage, California. He completed a Medical Retina fellowship at Loma Linda University, 2010, and focuses his surgical work on complex lens repositioning cases, including tilted, decentered, unstable, and dislocated intraocular lenses that may require additional fixation. He is a member of the American Academy of Ophthalmology, ASCRS, American Society of Retina Specialists, and Desert Doctors.
- NPI 1386822641
- California Medical License A97863
- American Board of Ophthalmology, certified 2012
- Loma Linda University, Medical Retina Fellowship 2010
35900 Bob Hope Dr.,
Suite 155
Rancho Mirage, CA 92270
Fax: (760) 568-2490
Opening Fall 2026
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