optical

Phoenix Cluster image

6000 × 4800

Clear frame glasses

1024 × 600

Two pairs of glasses on wood

1600 × 1200

Cat's Eye Nebula

1280 × 1024

Colorful kaleidoscopic patterns

2950 × 2094

Colorful kaleidoscopic patterns

2950 × 2094

X-ray of binoculars

1920 × 1200

stack of colorful eyeglasses

5792 × 3888

Vision test chart

1600 × 1200

green and black wavy lines

1920 × 1080

rainbow light on a disc

1920 × 1080

brown tortoiseshell glasses

2700 × 1500