The red eye tool can be found on the side toolbar in Photoshop. The top icon can be any of those listed at left.

Left click and hold the button down on the top icon and continue to hold until the submenu appears (as shown on the left).

Click on the "Red Eye Tool" option to activate the tool.

Once it is activated, select the area of the eye which is red, as shown below

The Healing Brush tool corrects imperfections, causing them to disappear into the surrounding image.

Use the Healing Brush tool to paint with sampled pixels from an image or pattern. The Healing Brush tool matches the texture, lighting, transparency, and shading of the sampled pixels to those pixels being 'healed.'

As a result, the repaired pixels blend seamlessly into the rest of the image.

Then, click on the area which you would like to repair.

The healing tool will automatically use the surrounding pixels to repair the image.

Another image to heal

And an image to patch and image to clone stamp

The Brightness/Contrast command lets you make simple adjustments to the tonal range of an image. Unlike Curves and Levels, which apply proportionate (nonlinear) adjustments to the pixels in an image, Brightness Contrast makes the same amount of adjustment to every pixel (a linear adjustment).

The Brightness/Contrast command is not recommended for high-end output because it can result in a loss of image detail.

Do one of the following:
Choose Image > Adjustments > Brightness/Contrast.
Choose Layer > New Adjustment Layer > Brightness/Contrast. Click OK in the New Layer dialog box.
Drag the sliders to adjust the brightness and contrast.
Dragging to the left decreases the level, and dragging to the right increases it. The number at the right of each slider reflects the brightness or contrast value. Values can range from -100 to +100.

To achieve this effect levels, contrast, color, and saturation were all adjusted.

copy starting image here