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Open-Angle Glaucoma in One Eye Likely to Develop in the Other

Open-Angle Glaucoma in One Eye Likely to Develop in the Other

In a new study published in JAMA Opthalmology, researchers report that people suffering from open-angle glaucoma in one eye are more likely to develop glaucoma in the second eye.

Leslie M. Niziol and associates conducted a post hoc analysis to estimate the time between initial glaucoma treatment of the study eye (SE) and the need for treatment of the fellow eye (FE) and to ascertain the concordance between rates of progression in SEs and FEs.

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The study included 607 participants with newly diagnosed open-angle glaucoma in 1 or both eyes and was followed up for up to 11 years. An SE was designated at baseline and randomized to medical or surgical treatment. The probability that the fellow eye would be treated for open-angle glaucoma was 57% at one year after randomization and 68% at seven years. Older patients and those with hypertension, higher intraocular pressure (IOP) or large cup-to-disc ratio were all significantly more likely to eventually need treatment of the fellow eye.

Key study findings:

  • Among patients with newly diagnosed open-angle glaucoma, almost half had initial treatment of both eyes.
  • After 7 years, approximately two-thirds of patients had bilateral treatment.
  • Of the variables predictive of FE treatment, modifiable factors included hypertension and IOP.
  • Slopes of MD were similar between SEs and treated FEs

The study concluded that study eye change is a signaling factor of fellow eye change and therefore requires close observation.

Open-angle glaucoma is the most common form of glaucoma, accounting for at least 90% of all glaucoma cases. It is caused by the slow clogging of the drainage canals, resulting in increased intraocular pressure.

For reference log on to 10.1001/jamaophthalmol.2018.3274.


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Source: With inputs from JAMA Opthalmology

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