Glaucoma Diagnostix @ Laxmi

At Laxmi Eye Institute we have a dedicated Glaucoma clinic, running on all days of the week.
Glaucoma is diagnosed through a comprehensive eye examination. This includes:
  1. Patient history – any specific symptoms, eye diseases, general health problems, family history and medication history.
  2. Vision testing – although affected only in advanced glaucoma, it gives an indication about the visual function of the eye.
  3. Eye pressure measurement (Tonometry) – high eye pressure is an important risk factor for glaucoma, and treatment is based mainly on reducing the eye pressure. At Laxmi Eye Institute we use the gold-standard Goldmann Applanation Tonometer as well as a state-of-the-art Non-Contact Tonometer for this purpose.
  4. Corneal thickness measurement (Pachymetry) – to detect an additional risk factor for glaucoma, namely thin corneas.
  5. Gonioscopy – a test to directly view the area of the eye (angle) from where the aqueous drains, and assess whether it is open or closed.
  6. Comprehensive slit-lamp examination – to look at the various structures of the eye
  7. Optic nerve head examination – which gives an idea about nerve damage due to glaucoma and comparison between the two eyes.

Other tests which are done and may require to be repeated are:
  1. Stereoscopic Disc Photos – these photographs of the eye nerve serve as a baseline for visible nerve damage, and are a useful comparison for future visits.
  2. Visual field testing (Perimetry) – to check if the field of vision has been affected by glaucoma. Usually the disease affects the peripheral vision first & later on may spread to affect the central part of the field. This test helps to confirm nerve damage by glaucoma and also is useful in monitoring whether the disease is under control. At Laxmi Eye Institute we use the Humphrey™ Perimeter for this purpose, preferred the world over.
  3. Optical Coherence Tomography (OCT) – this test is useful in early or doubtful cases of glaucoma. It measures the microscopic thickness of the retinal nerve fibre layer and the ganglion cell complex (GCC), and provides a detailed 3-D image of the same. The test can confirm the presence or absence of glaucoma when other tests are uncertain. It is especially useful in detecting early glaucoma, sometimes even before Perimetry can detect the disease. Laxmi Eye Institute is equipped with the most advanced spectral-domain OCT Avanti™ by Optovue.
  4. The Anterior Segment OCT – This is used to look at the status of the angle of the anterior chamber (the site of aqueous fluid drainage). It can also give us the exact angle measurements, the corneal thickness, and can be used post-operatively to assess the status of the Trabeculectomy bleb.