What is glaucoma screening?
Screening refers to the process of identifying early signs of optic nerve damage or elevated intraocular pressure during an eye examination, often before any symptoms are present.
Because early stages do not usually affect vision noticeably, screening is essential for detecting changes that would otherwise go unnoticed.
When is screening recommended?
Screening is recommended as part of routine eye care, particularly from the age at which risk increases. It is also important for individuals with known risk factors or those advised to have regular monitoring.
Even in the absence of symptoms, periodic screening helps ensure that any changes are identified early.
What does screening involve?
Screening typically includes a combination of non-invasive assessments that evaluate eye pressure, optic nerve appearance and overall eye health.
These tests are quick, comfortable and form part of a comprehensive eye examination.
Measuring intraocular pressure
Assessing intraocular pressure is an important component of screening. This provides an indication of whether pressure within the eye is within an expected range.
While pressure alone does not confirm the presence of the condition, it helps identify individuals who may require further evaluation.
Assessing the optic nerve
The optic nerve is examined to detect early structural changes. Subtle differences in its appearance may indicate early damage, even before vision is affected.
Careful evaluation allows for comparison over time.
Evaluating overall eye health
Screening also includes a broader assessment of eye health to ensure that other conditions affecting vision are not overlooked.
This comprehensive approach helps provide a clearer understanding of overall visual function.
Importance of regular screening
Because changes can develop without symptoms, regular screening is essential for early detection. Identifying changes at an early stage allows for timely intervention and reduces the risk of progression.
Monitoring over time
Screening is not a one-time process. Ongoing assessment allows for changes in eye pressure or optic nerve structure to be tracked over time, supporting early identification of progression.