Type Of Recent Vision Loss

What Causes Central Vision Loss?

Central vision loss can have various causes, ranging in severity from 'needs attention' to 'generally fatal'.  Finding the true cause means ruling out or confirming each possibility – in other words, diagnosis.

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Diagnosis is usually a complex process due to the sheer number of possible causes and related symptoms.  In order to diagnose central vision loss, we could:

  • Research the topic
  • Find a doctor with the time
  • Use a diagnostic computer system.
The process is the same, whichever method is used.

Step 1: List all Possible Causes

We begin by identifying the disease conditions which have "central vision loss" as a symptom.  Here are six possibilities:
  • Macular Degeneration
  • Stroke Risk
  • Brain Tumor
  • Retinitis Pigmentosa
  • Glaucoma
  • Pituitary Tumor

Step 2: Build a Symptom Checklist

We then identify all possible symptoms and risk factors of each possible cause, and check the ones that apply:
rapid decline in speaking ability
sleeping less than necessary
gradual loss of vision
African ethnicity
high current exposure to solvents
macular degeneration in family
recent "don't care" attitude
much reduced sense of taste
gradual decline in speaking ability
minor steroid use
macular degeneration
stroke in family members
... and more than 30 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of central vision loss:
Cause Probability Status
Stroke Risk 98% Confirm
Brain Tumor 67% Possible
Glaucoma 22% Unlikely
Pituitary Tumor 0% Ruled out
Macular Degeneration 0% Ruled out
Retinitis Pigmentosa 0% Ruled out
* This is a simple example to illustrate the process

Arriving at a Correct Diagnosis

The Analyst™ is our online diagnosis tool that learns all about you through a straightforward process of multi-level questioning, providing diagnosis at the end.

If you indicate eye problems, The Analyst™ will ask further questions including this one:
If you have suffered any loss of vision within the past few years, how would you describe it?
Possible responses:
→ Not applicable / long time ago / don't know
→ General vision loss
→ Mainly central (foveal) vision loss
→ Mainly outer (peripheral) vision loss
Based on your response to this question, which may indicate general vision loss, central vision loss or peripheral vision loss, The Analyst™ will consider possibilities such as:
Brain Tumor

Loss of vision in one or both eyes is especially notable if it is peripheral vision loss.

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