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.
Diffusion causes gas exchange as it moves the oxygen to where its needed and the carbon dioxide moved out. Diffusion occurs when molecules move from an area of high concentrat â¦ ion (of molecule) to an area of low concentration.