Glaucoma treatment and surgery in Türkiye

The purpose of glaucoma treatment is to preserve remaining vision and reduce the rate of further visual-field loss. Eye drops, laser procedures and operations do not restore optic-nerve tissue that has already been lost. A claim that one intervention will cure glaucoma, recover lost sight or guarantee a life without drops should therefore be treated cautiously.

For a European patient considering care in Türkiye, the decision should not be based on the procedure name or package price alone. Diagnostic accuracy, the surgeon’s glaucoma-specific experience, the target intraocular pressure, access to urgent postoperative review and a workable long-term follow-up plan in Europe are central parts of the same decision.

Short answer: How is glaucoma treated?

Treatment aims to lower intraocular pressure to an individual target that is considered likely to protect vision over the patient’s lifetime. Options may include eye drops, selective laser trabeculoplasty, peripheral laser iridotomy, cataract surgery, MIGS, trabeculectomy, a glaucoma drainage implant or, in selected refractory cases, laser treatment to the ciliary body. Not everyone needs every step, and one fixed sequence is not appropriate for all types or stages of glaucoma.

Emergency warning: Do not travel with possible acute angle closure

Sudden severe eye pain, a red eye, blurred vision, coloured rings around lights, headache, nausea or vomiting may indicate acute angle-closure glaucoma. This can threaten vision rapidly. Patients with these symptoms are advised to seek emergency ophthalmic care where they are rather than wait for an online reply or travel to Türkiye for a planned appointment.

What is glaucoma, and is it the same as high eye pressure?

Glaucoma describes a group of diseases in which the optic nerve develops characteristic damage, often with corresponding visual-field loss. Raised intraocular pressure is an important risk factor, but it is not the diagnosis by itself. A person may have ocular hypertension without detectable nerve damage. Another person may develop normal-tension glaucoma despite pressure readings that appear to fall within a statistical normal range.

Common clinical categories include:

• Primary open-angle glaucoma, which often progresses slowly without early symptoms

• Normal-tension glaucoma

• Primary angle-closure disease, in which the drainage angle is narrow or closed

• Secondary glaucoma associated with pseudoexfoliation, pigment dispersion, inflammation, trauma, steroid exposure or other eye disease

• Childhood glaucomas, which require different expertise and pathways

Because peripheral vision can decline without obvious symptoms, screening and follow-up matter even when central vision still feels normal.

Which tests may be recommended for diagnosis?

A comprehensive glaucoma assessment should not rely on a single pressure reading or an air-puff test alone. Depending on the clinical situation, an ophthalmologist may interpret the following together:

• Intraocular pressure measured with Goldmann-type applanation tonometry

• Central corneal thickness, which can influence interpretation of pressure

• Gonioscopy to determine whether the drainage angle is open, narrow or closed

• Dilated examination of the optic nerve and retina

• OCT imaging of the retinal nerve-fibre and ganglion-cell layers

• Standard automated visual-field testing

• Baseline optic-nerve photographs

• Repeat pressure readings or tests for secondary causes when indicated

OCT and visual fields provide complementary information. OCT examines structure, while perimetry assesses visual function. Reliable comparisons over time are more useful than one isolated result and may help establish whether damage is stable or progressing.

How is a target eye pressure chosen?

There is no single pressure that is safe or successful for every patient. The target may be influenced by the untreated pressure, severity of optic-nerve and field damage, rate of progression, vision in the other eye, age and expected lifetime, corneal characteristics, other risk factors and treatment burden. If the disease progresses despite apparently acceptable readings, the target may need to be lowered and the plan reassessed.

Reaching a target pressure is not the same as proving that glaucoma has stopped. Continued OCT, visual-field and clinical monitoring is usually recommended.

Eye-drop treatment

Treatment may involve prostaglandin analogues, beta blockers, carbonic anhydrase inhibitors, alpha agonists or combinations with different mechanisms. Selection should account for likely pressure reduction as well as asthma, heart rhythm or blood-pressure problems, pregnancy considerations, allergies, ocular-surface disease and interaction with other medicines.

An apparently ineffective regimen may reflect missed doses, difficulty handling bottles, incorrect technique, cost, an empty prescription or intolerable side effects. Education and a simplified schedule can be as important as adding another medicine. After instilling a drop, gently closing the eye and applying short pressure over the tear duct may reduce systemic absorption when advised. Preservative-free formulations may be considered for selected patients with allergy or clinically important ocular-surface symptoms.

What is selective laser trabeculoplasty?

Selective laser trabeculoplasty, usually called SLT, applies laser energy to the eye’s natural drainage tissue in open-angle glaucoma. It may be offered as an initial option or as an addition to drops. An outpatient procedure and the possibility of delaying or reducing medication can be attractive for some patients.

SLT does not work sufficiently in every eye. Its effect may reduce with time, repeat treatment may sometimes be considered, and drops or surgery may still be required. Temporary inflammation, discomfort or a pressure spike can occur. It is not suitable for every form of angle closure, and expected benefit should be discussed using the individual angle anatomy and previous response.

When is peripheral laser iridotomy considered?

Peripheral laser iridotomy creates a small opening in the iris to improve fluid movement in selected eyes with a narrow angle or risk of angle closure. In an acute attack, pressure may first need to be reduced with urgent medicines before laser treatment is completed. Iridotomy does not mean that all future risk has disappeared. The angle, pressure, optic nerve and visual field may still need monitoring, and some patients require additional treatment.

What is MIGS?

Minimally invasive glaucoma surgery is an umbrella term for different implants and procedures that bypass, open or enlarge parts of the eye’s drainage pathway. MIGS may be considered mainly for selected patients with early or moderate open-angle glaucoma when the target pressure is not extremely low and reducing the medication burden is a meaningful goal. Many procedures are performed with cataract surgery, while some can be used alone.

MIGS is not one operation. Devices differ in mechanism, evidence, expected pressure reduction, long-term data, cost and availability. For advanced glaucoma or an eye requiring a very low target, a MIGS procedure may not provide enough pressure reduction. A small incision should not be interpreted as no risk or certain success.

Useful questions include which device is proposed, why it matches the angle and disease stage, the surgeon’s experience with it, the expected pressure and drop burden, and what the next option would be if the target is not reached.

How does trabeculectomy work?

Trabeculectomy creates a controlled new pathway for fluid to drain beneath the tissues covering the eye. It can be considered when drops and laser are unlikely to protect vision or have not achieved the target, and it remains an important option when advanced disease requires a low pressure. Medicines that influence wound healing may be used during or after the operation.

The result depends on more than the operation itself. Early follow-up may involve frequent pressure checks, adjustment or release of sutures, treatment of scarring, injections or needling of the drainage area known as the bleb. A short travel package without flexible access to the glaucoma team may therefore be unsuitable. Patients are advised to confirm who will provide these reviews and what happens if their stay must be extended.

When may a glaucoma tube or drainage implant be used?

A tube shunt directs fluid through a small tube to a plate positioned on the outer wall of the eye. It may be considered after previous eye surgery, when scarring risk is high, in some secondary glaucomas, or when trabeculectomy is unsuitable or has failed. The device does not remove glaucoma, and some patients still require drops or another operation.

The implant brand and model, valve design, location, relationship to the cornea and eye muscles, expected follow-up and availability of expertise in the home country should be documented. Implant surgery also requires long-term observation for corneal, pressure and device-related problems.

Ciliary-body laser procedures

Procedures such as cyclophotocoagulation aim to reduce fluid production by treating the ciliary body. They have traditionally been used for refractory or advanced glaucoma, although techniques and energy delivery vary. Inflammation, excessive pressure reduction and vision loss are among the risks that require discussion. It should not be presented as a simple, risk-free laser, and selection should be made by a glaucoma specialist.

What if cataract and glaucoma are present together?

Cataract surgery may lower pressure to some extent in selected eyes, but it does not automatically replace glaucoma treatment. Depending on cataract symptoms, angle anatomy, glaucoma severity and target pressure, the plan may involve cataract surgery alone, cataract surgery with MIGS, or cataract surgery combined with or staged around a stronger glaucoma procedure.

Lens choice also deserves care because advanced field loss and reduced contrast sensitivity can affect visual priorities. The related Clinicly cataract surgery guide explains lens and follow-up considerations in more detail.

What are the possible risks of glaucoma surgery?

The probability and type of complication differ between procedures. The consent discussion may include:

• Pressure that remains above target or rises again after scarring

• Pressure that becomes too low and affects the eye

• Temporary pressure spikes, pain or inflammation

• Bleeding, infection or infection inside the eye

• Cataract formation or progression

• Corneal swelling or damage

• Bleb leakage, scarring, needling or revision

• Implant exposure, displacement or contact with the cornea

• Double vision or eye-movement disturbance

• Further drops, laser or another operation

• Permanent loss of vision, although uncommon

No surgeon can make the risk zero. Previous operations, glaucoma subtype, ocular-surface health, immune conditions, blood-thinning medicines and coexisting retinal or corneal disease may alter the individual balance.

Questions to ask a glaucoma surgeon and hospital in Türkiye

• Which tests confirm my diagnosis and glaucoma subtype?

• What do my OCT and visual-field results show about progression?

• What is my target pressure, and why?

• What are the alternatives to the proposed drop, laser or operation?

• Why is this procedure appropriate for my stage of disease?

• What relevant experience does the surgeon have with this technique or implant?

• Who will examine me during the first days and weeks after surgery?

• Is urgent treatment available if the pressure becomes too high or too low?

• Does the quotation include the implant, tests, medicines, postoperative interventions and follow-up?

• Which records will be supplied to my ophthalmologist in Europe?

Clinicly may help patients compare written proposals using the same questions. Price, online reviews or the name of a device should not be the only selection criteria. The Clinicly hospital and doctor evaluation guide provides a broader framework.

Which records should be shared before travelling?

Recent examination findings, pressure history, visual-field printouts, OCT images and reports, corneal thickness, angle assessment, previous operation notes, current drops, allergies and systemic medical conditions can support a preliminary review. Sharing raw visual-field and OCT files, rather than a short summary alone, may make comparison more informative.

A remote opinion is provisional. Examination, repeat imaging or additional tests in Türkiye may change the recommendation, procedure or quotation. Patients may wish to keep their travel arrangements flexible until the plan is confirmed in person.

How long should a patient stay, and when is flying appropriate?

There is no universal safe stay or flight interval. The plan after uncomplicated SLT is different from the plan after trabeculectomy or tube surgery. Filtering procedures can require close early observation because pressure, the anterior chamber and wound healing may change quickly. The surgeon should assess vision, pressure, the wound or bleb and current medicines before giving written travel advice.

Flexible flights and accommodation that can be extended are worth considering. Sudden reduction in vision, increasing pain, marked redness, discharge, nausea, trauma or new flashes and a curtain-like visual change should prompt urgent local eye assessment rather than waiting for a remote message.

Why is follow-up in Europe essential?

Glaucoma is usually a lifelong condition. Even when surgery lowers pressure well, the visual field, OCT, medication requirement and condition of a bleb or implant still require review. Before leaving Türkiye, the patient is advised to obtain the operation report, implant details, latest pressure measurements, current drop schedule, warning signs and a written follow-up plan.

The Clinicly return-to-Europe follow-up guide covers medical records, communication and local care planning in more detail. Remote communication may support continuity but cannot replace an examination when pressure measurement, microscopy or urgent treatment is needed.

How should costs be compared?

The total cost may include the consultation, visual field, OCT, anaesthesia, operating theatre, device, medicines used to manage wound healing, postoperative drops, repeated checks, injections, suture procedures, needling, revision, accommodation and changed flights. Written quotations should separate included and excluded items and explain responsibility for unexpected care. The lowest price should not automatically be treated as the most suitable clinical option.

How can Clinicly support a glaucoma treatment journey?

Clinicly may help transfer medical records to relevant ophthalmology teams, identify providers with glaucoma experience, coordinate consultations and testing, arrange interpreting and travel logistics, and support communication about follow-up. Clinicly does not diagnose glaucoma, set a target pressure, select a procedure or guarantee an outcome. Personal medical decisions should be made by the patient and a licensed ophthalmologist after appropriate examination and testing.

Frequently Asked Questions

Can glaucoma be cured completely?

No treatment should be described as reversing established glaucoma damage. Pressure-lowering care aims to protect remaining vision and slow progression, and continuing monitoring is normally required.

Can I have glaucoma when my eye pressure is normal?

Yes. Normal-tension glaucoma can occur. Pressure is interpreted with the optic nerve, OCT, visual field, drainage angle and other risk factors.

Does SLT definitely replace eye drops?

No. It may delay or reduce the need for drops in some patients, but the response can be insufficient or may reduce with time.

Is MIGS suitable for advanced glaucoma?

MIGS is generally considered more often in early or moderate open-angle disease. Advanced glaucoma may require a lower target that is more likely to be achieved with trabeculectomy or another filtering procedure.

Does trabeculectomy improve eyesight?

Its main purpose is to lower pressure and reduce the risk of further optic-nerve damage. It does not recover vision already lost to glaucoma.

Will I still need drops after a tube implant?

Possibly. A drainage implant can lower pressure, but some patients continue one or more medicines.

Can cataract and glaucoma surgery be performed together?

They can be combined in selected cases. Whether a combined or staged approach is preferable depends on cataract symptoms, glaucoma stage, target pressure and surgical risk.

Is travelling to Türkiye only for laser treatment reasonable?

It may be considered after assessment for a stable chronic condition. Sudden pain, rapid visual change or possible angle closure requires urgent local care instead of planned travel.

When can I return to Europe after surgery?

There is no fixed interval. The procedure, pressure, healing, likelihood of early intervention and access to a local ophthalmologist should determine the recommendation.

Should I seek a second opinion?

A second glaucoma-specialist opinion may be useful for advanced disease, an irreversible surgical decision, several reasonable options or test results that do not agree.

Conclusion

Glaucoma treatment in Türkiye may be an option for some European patients, but an informed decision requires more than an eye-pressure number or a technology label. The glaucoma type and stage, progression rate, personalised target pressure, quality of evidence, surgeon experience, early access to postoperative care and long-term monitoring in Europe should be considered together. Clinicly can support coordination and communication, while treatment suitability should remain a decision based on an individual assessment by a qualified glaucoma specialist.