Once this type of retinal detachment develops and causes symptoms, it can progress to total blindness if it is not repaired promptly. In the United States, retinal detachment is a relatively uncommon condition, affecting only one of every 10,000 Americans each year.
Gas exchange in reptiles still occurs in alveoli however, reptiles do not possess a diaphragm. Thus, breathing occurs via a change in the volume of the body cavity which is controlled by contraction of intercostal muscles in all reptiles except turtles.
This is commonly known as the gas exchange that takes place in the lungs. The oxygen molecule in the blood (oxygen-rich blood) travels from the lungs to the heart through the pulmonary veinioles, pulmonary veins, and into the left atrium in order to provide the heart with oxygen.