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):
  • Fluorosis
  • Epstein-Barr Virus
  • Lupus (SLE)
  • Iritis
  • Infectious Mononucleosis
  • Vitamin B6 Need
  • Macular Degeneration
  • Dry Eye

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:
regular unexplained nausea
pain in one eye
possible enlarged liver
multiple swollen cervical nodes
frequent painful axillary nodes
painful inguinal nodes
refined white flour consumption
history of carpal tunnel syndrome
chest pain when breathing
recent body hair loss
having a learning disability
history of lupus
... and more than 90 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
Epstein-Barr Virus 91% Confirm
Dry Eye 30% Unlikely
Vitamin B6 Need 22% Unlikely
Infectious Mononucleosis 0% Ruled out
Lupus (SLE) 0% Ruled out
Macular Degeneration 0% Ruled out
Fluorosis 0% Ruled out
Iritis 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:
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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