Eye Sensitivity To Bright Light

What Causes Increased Sensitivity To Bright Light?

Increased sensitivity to bright light can have various causes, ranging in severity from 'minor' to 'very serious'.  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 increased sensitivity to bright light, 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 "increased sensitivity to bright light" as a symptom.  Here are eight of many possibilities (more below):
  • Epstein-Barr Virus
  • Dry Eye
  • Adrenal Fatigue
  • Pyroluria
  • Macular Degeneration
  • Iritis
  • Lupus (SLE)
  • Fluorosis

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:
mild discomfort when breathing
low diastolic blood pressure
diarrhea for 1-3 months
history of tender muscles
macular degeneration in family
very slow recovery from colds/flu
mildly elevated ANA levels
suspected adrenal insufficiency
craving for salt
poor tolerance of heat
frequent unexplained fevers
morning sickness
... and more than 130 others

Step 3: Rule Out or Confirm each Possible Cause

A differential diagnosis of your symptoms and risk factors finds the likely cause of increased sensitivity to bright light:
Cause Probability Status
Iritis 95% Confirm
Fluorosis 25% Unlikely
Pyroluria 15% Unlikely
Adrenal Fatigue 1% Ruled out
Epstein-Barr Virus 1% Ruled out
Macular Degeneration 1% Ruled out
Lupus (SLE) 1% Ruled out
Dry Eye 1% 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:
Sensitivity to bright light. Is daylight too strong for your eyes?
Possible responses:
→ No / don't know
→ A little - I occasionally have to shield my eyes
→ Regularly - I often need to shield my eyes
→ Usually - I need sunglasses when I go out
→ Always - I can't stand bright sun at all
Based on your response to this question, which may indicate either sensitivity to bright light or high sensitivity to bright light, The Analyst™ will consider possibilities such as:
Lupus, SLE (Systemic Lupus Erythematosus)

Sun or light sensitivity (photosensitivity) is experienced by 30% of sufferers.

Macular Degeneration

Those suffering from macular degeneration may be very sensitive to light or actually see lights that are not there.

Concerned or curious about your health?  Try The Analyst™
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