Compléter Vision and TechnologiesVersion en ligne Complete this activity to summarise accommodation and technologies that are used to manage and treat vision disorders. par Belinda Schirmer 1 accommodation clear shape retina point rays near The shape of the lens refracts ( bends ) light to focus them precisely on the . This allows vision . When focusing on or far objects , the lens of the eye changes to ensure the light rays meet at a focal on the retina . This process is called . 2 contracting slacken far ciliary focusing more thinner pull ligaments When on close objects , the lens is rounder and curved in shape . This is due to the ciliary muscles which causes the suspensory ligaments to . When focusing on objects , the muscles relax , which causes the suspensory to become taut and on the lens . This causes the lens to become and less curved in shape . 3 Concave hyperopia bypassing cornea light surgery cataract spectacles bionic refractive vision Lenses are used in and contact lenses to correct the errors of the eye . lenses correct myopia , while convex lenses correct . Laser changes the convexity of the to correct refractive errors and allow rays to be focused on the retina . Cataract and laser surgery restore vision to cataract sufferers . The eye could help to restore to those suffering from retinitis pigmentosa by damaged rod and cone cells .
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