The eye
Structre
Functioning of the eye
Refraction of light rays by the conea and lens
Light rays enter the eye through the conrea, aqueous humour, pupil, vitreous
humour and fall on the retina.
The cornea refracts light rays and the lens focuses light sharply onto the retina.
Accomodation
The altering the degree of convexity of the lens is an automatic process.
Taut: Contracted (Tight)
Slack: relaxed (Loose)
Near vision
ciliary muscles contract causing the Suspensry ligaments to slack, which pulls
ciliary process and choroid towards the lens
tension on suspensory ligaments is released
elastic lens becomes more convex inreasing refractive power
clear image formed in retina.
Structre
Functioning of the eye
Refraction of light rays by the conea and lens
Light rays enter the eye through the conrea, aqueous humour, pupil, vitreous
humour and fall on the retina.
The cornea refracts light rays and the lens focuses light sharply onto the retina.
Accomodation
The altering the degree of convexity of the lens is an automatic process.
Taut: Contracted (Tight)
Slack: relaxed (Loose)
Near vision
ciliary muscles contract causing the Suspensry ligaments to slack, which pulls
ciliary process and choroid towards the lens
tension on suspensory ligaments is released
elastic lens becomes more convex inreasing refractive power
clear image formed in retina.
