The main difference between YAG and SLT lasers is their clinical use. YAG lasers are used for posterior capsulotomy and peripheral iridotomy, while SLT lasers are used to treat glaucoma by improving fluid drainage in the eye.
Both laser types are commonly used in ophthalmology and serve different but complementary roles in patient care.
YAG Laser
SLT Laser
| Feature | YAG | SLT |
|---|---|---|
| Use | Capsulotomy | Glaucoma |
| Frequency | Occasional | Repeatable |
| Energy | High | Low |
| Workflow | Post-cataract | Chronic care |
Modern ophthalmic lasers are available as either YAG-only systems, SLT-only systems, or dual-function YAG/SLT platforms. Many clinics today prefer combination systems for flexibility and efficiency.
These systems allow clinics to perform both capsulotomy and glaucoma treatments on a single device.
Often preferred by clinics managing both cataract follow-up and glaucoma care
Designed specifically for posterior capsulotomy procedures.
Common in high-volume cataract practices
Used for selective laser trabeculoplasty in glaucoma management.
Often used in glaucoma-focused clinics
YAG and SLT lasers are used in different clinical situations, depending on the patient’s condition.
When to Use a YAG Laser
YAG lasers are typically used after cataract surgery to treat posterior capsule opacification. They are also used for peripheral iridotomy in certain glaucoma cases.
When to Use an SLT Laser
SLT lasers are primarily used to manage open-angle glaucoma by lowering intraocular pressure. They are often used as an alternative or supplement to medication.
Choosing between YAG and SLT lasers depends on your practice focus and patient population.
Practices that perform a high volume of cataract procedures will typically require a YAG laser for capsulotomy. Clinics focused on glaucoma management often prioritize SLT lasers to help manage intraocular pressure.
Many ophthalmology practices use both YAG and SLT lasers as part of a comprehensive treatment setup.
Space, budget, and workflow may also influence whether a clinic starts with one system or invests in both.
You can review the Best YAG Laser to comparing leading systems:
Best YAG Lasers in Ophthalmology (2026)
Many clinics also consider diagnostic equipment such as OCT when planning their system setup:
Best OCT Machines in Ophthalmology (2026)
YAG lasers are used for capsulotomy and iridotomy, while SLT lasers are used to treat glaucoma by improving fluid drainage.
YAG lasers can be used for certain glaucoma procedures such as peripheral iridotomy, but they are not typically used for ongoing glaucoma management like SLT.
SLT and YAG lasers serve different purposes, so one is not better than the other. The choice depends on the clinical application.
Many ophthalmology practices use both systems to cover a broader range of treatments, especially if they manage both cataract and glaucoma patients.
Pricing varies depending on the model and condition. Used systems are more affordable, while new systems are priced higher.
If you are comparing YAG and SLT lasers or planning your equipment setup, we can help you find the right systems based on your needs and budget.
If you are upgrading your equipment, you many also be able to sell your existing systems. Share a few details about your equipment and we gladly provide you with a current market valuation.
We work with clinics worldwide to source reliable ophthalmic equipment, including YAG lasers, SLT lasers, OCT systems, and diagnostic devices.
View available equipment or contact us to learn more.
