The Eye Special Sense Organs. Three Layers of Tissue 1.the sclera 2.the choroids 3.the retina.

The EyeSpecial Sense Organs

Three Layers of Tissue

1. the sclera

2. the choroids

3. the retina

PhotoreceptorsRods are responsible for detecting objects in dim light – black and white.

Cones are responsible for detecting objects in bright light – colors – red, green, and blue.

Vision

HyperopiaFarsightedness

Image shows up behind the retina – eye is too short

MyopiaNearsightedness

Image shows up in front of the retina – eye is too long

PresbyopiaOldsightedness

Lens looses its ability to focus on objects – can’t see objects up close