In: Anatomy and Physiology
Samantha recently went to the eyedoctor because her vision has progessively been getting worse. The eye doctor stated that her eyeballs are too long and the light rays that are hitting her retina are diverged. Based on the diagnose the doctor suggested that in order to correct her vision they should reshape her cornea
Question:
1. What type of visual defect does Samantha have? Explain your answer
2. Would Samantha's cornea be more convex or less convex? Explain your answer (include what would happen to the light)
1)MYOPIA OR NEAR SIGHTEDNESS
Myopia or Near sightedness is visual impairement characterized by difficulty in looking distant object.
Near object can be viewed without any defect thatwhy it is called Nearsihtedness.
In this patient the reason for the myopia is Long EyeBall.
Normally, The light rays entering the eye are focused by the lens into the Retina. if the length of the Eyeball increases the Light cannot be converged on to the Retina, the image is formed infront of the retina. Retina will only recieve Diverged rays .
2) MORE CONVEX.
The patient is having ,myopia , so the cornea will be more bulged that means the curvature of the cornea is more.
When the curvature of the lens increases , the radius of the lens will decreases and make it more convex.
So, the best treatment option is Using a Concave Lens inorder to diverge the rays falling infront of the retina to make it fall on the retina so that the patient can see the distant object.