How to Fix Red Eye in Photoshop
Red eye in Photoshop is a common editing fix, especially for portraits shot with flash. The Red Eye Tool works automatically, but manual correction gives you control when the auto result looks unnatural. This guide covers both approaches so you can remove red eye cleanly and keep the eye looking healthy.
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Using the Red Eye Tool
The fastest way to fix red eye in Photoshop is with the dedicated Red Eye Tool, which is built into the Toolbar. It adjusts the pupil color and darkens the area automatically based on a simple click.
- Select the Red Eye Tool from the Toolbar (it shares a flyout menu with the Healing Brush and Spot Healing Brush).
- In the Options Bar, set the Pupil Size and Darken Amount to around 50% as a starting point.
- Click and drag a selection over the red pupil, making sure the marquee fits entirely inside the eye.
- Release the mouse — Photoshop replaces the red with a neutral dark gray or brown.
- Repeat for the other eye.
If the result looks too dark or the iris detail is lost, press Ctrl+Z (Cmd+Z) to undo, lower the Darken Amount, and try again. The tool works best on images where the flash is directly aligned with the lens axis.
Fixing Red Eye Manually
When the Red Eye Tool produces an unnatural look, manual correction is more reliable. This approach lets you preserve iris texture and match the other eye more precisely.
Step 1: Create a Work Layer
Duplicate the Background layer (Ctrl+J / Cmd+J) so you can work non-destructively. Zoom in to 100% or 200% for accuracy.
Step 2: Select the Pupil
Use the Elliptical Marquee Tool to draw a tight circle around the red pupil. Feather the selection by 2 to 5 pixels (Select > Modify > Feather) so the edge blends naturally.
Step 3: Desaturate and Darken
Add a Hue/Saturation adjustment layer and drag Saturation to -100, which removes the red cast. Then add a Curves or Levels adjustment layer and pull the midtones down slightly until the pupil looks dark and neutral, matching the other eye.
Step 4: Refine the Edges
Use a soft Brush set to low opacity to paint on the layer mask, blending the correction into the surrounding iris. This keeps the transition smooth and avoids a hard ring around the pupil.
Comparing Red Eye Correction Methods
| Method | Speed | Control | Best For |
|---|---|---|---|
| Red Eye Tool | Fast | Limited | Quick fixes on straightforward flash portraits |
| Manual Desaturation + Curves | Slower | High | Images with mixed lighting or sensitive subjects |
| Selective Color Adjustment | Moderate | High | Fine-tuning color balance across both eyes |
Preventing Red Eye in Future Shots
While Photoshop makes red eye easy to fix, prevention in-camera saves editing time. Red eye happens when flash light reflects off the retina through a wide pupil in low light. Increasing ambient light causes the pupil to contract, reducing the reflection. If you can, bounce the flash off a ceiling or wall instead of firing it directly at the subject. Many cameras also include a red-eye reduction pre-flash that constricts the pupil before the main exposure.
When Red Eye Signals a Larger Problem
In some cases, a red or glowing eye in a photo is not caused by flash at all. Low-light photography can reveal the tapetum lucidum, a reflective layer behind the retina found in many animals, which produces a bright eye shine. In human portraits, persistent redness in one eye without flash may indicate a medical condition and should be evaluated by a professional. For standard photo editing, Photoshop gives you the tools to correct the effect accurately every time.