Glaucoma surgery is usually not the first step in treating ocular hypertension with optic nerve damage. However, it can save the patient's eyesight if other glaucoma treatment options don't work. On the other hand, ocular hypotensive drugs can cause side effects and sometimes an "immediate" drop in blood pressure may be required. In these cases, glaucoma surgery at eye surgery hospitals is the most convenient option.



·      When ocular hypotensive side effects appear

The treatment of glaucoma with ocular hypotensive can cause important side effects in patients with cardiac pathology (cause slowing of the heartbeat, bradycardia), or bronchial pathology (bronchial narrowing or bronchospasm), in addition to local ocular effects such as: allergy, intolerance or cosmetic effects. In all these cases, glaucoma surgery will be the best option.

  • When glaucomatous damage is severe

When glaucomatous damage is visible at the visual field level, it means that 30% of the ocular nerve fibers have already been lost. If progressive deterioration of the optic nerve is suspected or target intraocular pressure is not reached, it is important not to delay glaucoma surgery. Since, the operation of glaucoma at eye treatment hospitals in Delhi, will provide a more intense tension drop than the other treatments.


All glaucoma surgery techniques are normally performed under local anesthesia, that is, applying anesthesia to the eyeball. Thus, the patient does not experience any type of pain during glaucoma surgery although he is awake and conscious. The anesthetist also provides sedative drugs to the patient so that he is calm.


  • Glaucoma filtering surgery

The filtering surgery is the most used technique in both its classic side (trabeculectomy), as in the current and less invasive, deep sclerectomy nonperforating (EPNP). In all its variants, filtering techniques aim to create a direct passage of intraocular fluid (aqueous humor, HA) from inside the eye to the subconjunctival space - below the conjunctiva (outer covering of the eye).

Each patient, depending on the characteristics of their glaucoma and the anatomical aspects of their eyeball, will need one type of glaucoma filtering surgery or another.

  • Trabeculectomy

In classic trabeculectomy, a small opening is made at the level of the anterior part of the eye, producing direct communication between the intraocular space and the subconjunctival.

  • Non-perforating deep sclerectomy (EPNP)

It consists of the extraction of a portion of ocular tissue, leaving the deepest part intact. This part, just a few microns thick, acts as a filter; allowing the exit of the intraocular fluid in a more controlled and progressive way than in the classic trabeculectomy. Therefore, the EPNP prevents sudden decompression of the eyeball that could cause complications such as: bleeding, hypotonia (excessive decrease in eye pressure) with decreased visual acuity, etc.


  • After glaucoma eye surgery in India it is important to rest for a week. Progressive incorporation into normal life will depend on the type of glaucoma surgery that has been performed
  • After glaucoma surgery, it is normal for the eye to be red, sore, or watery. You can also see a small lump where the intervention was performed. This lump, located in the upper part of the eye, corresponds to the filtration ampoule made during surgery and is completely normal. It is recommended not to tire the eye trying to read during the first postoperative days.
  • It is also possible that after a glaucoma procedure, a cataract will progressively develop.
  • After glaucoma surgery, the prescription may change and an adjustment of the glasses may be necessary.
  • The patient should use anti-inflammatory eye drops and antibiotics during the first 2 to 3 months postoperatively after glaucoma surgery and on a downward schedule. The ophthalmologist will modulate the type of treatment depending on the evolution of each patient.