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

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:
frequent sore throats
major fatigue for over 12 months
low energy/stamina
very tender muscles
occasional unexplained vomiting
acne worse during period
recent body hair loss
constant thirst
current birth control pill use
difficulty swallowing
painful inguinal nodes
brittle fingernails
... and more than 140 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
Lupus (SLE) 91% Confirm
Fluorosis 23% Unlikely
Adrenal Fatigue 14% Unlikely
Dry Eye 4% Ruled out
Infectious Mononucleosis 1% Ruled out
Epstein-Barr Virus 0% Ruled out
Vitamin B6 Need 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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