When an ophthalmologist surgically corrects a patient’s vision through LASIK or PRK, the doctor is making adjustments to the patient’s a. cornea. b. lens. c. retina. d. iris.

After surgery to restore vision, patients who had been blindfrom birth had difficultya. recognizing objects by touch.b. recognizing objects by sight.c. distinguishing figure from ground.d. distinguishing between bright and dim light.

If someone is born with dense cataracts on both eyes, and the cataracts are removed years later, what happens?A. The person remains permanently blind.B. The person gradually recovers all aspects of vision.C. The person gains some vision, but remains impaired on object recognition, motion vision, and depth perception.D. The person gains almost all aspects of vision, but remains greatly impaired on color perception.

Which of the following provides an example of serial (rather than parallel) processing in the visual system? a. Visual information is sent from the retina, to the LGN, and then to the visual cortex.   b. Rods and cones function simultaneously in the retina.   c. The “what” and “where” streams in the visual association cortex work together.   d. Processing of motion and shape inform each other.

While conducting an eye examination, the ophthalmologist shines a light into the client's pupil and observes that there is a slow recovery of the pupil size. Which muscular atrophy is responsible for this condition? The iris dilator muscle The iris sphincter muscle The medial rectus muscle The lateral rectus muscle

a.) Which of the following components of the eye is responsible for two-thirds of the focusing?    a. The lens   b. The aqueous humour   c. The retina   d. The cornea   e. The fovea b.) Which of the following components of the eye allows a person to focus on objects at various distances?   a. The vitreous humour   b. The optic nerve   c. The lens   d. The photoreceptor cells.   e. The sclera c.) Which of the following components of the eye is responsible for image resolution?  a. The pupil  b. The retina  c. The sclera  d. The lens  e. The cornea

Presbyopia is a condition in which a person's ability to adjust to changes in visual acuity diminishes or disappears entirely. Will she still require reading glasses after LASIK to correct her far vision? Explain.

put the following in the correct order of the most directly visual processing pathway from eyes to brain. a. lateral geniculate meuron b. ganglion cell. c. visual cortex neuron d. biploar cell e. optic nerve f. photorecpetor

Eyelids that separate may be corrected by: a. a surface pack of cavity fluid b. stretching and cementing c. injecting a bleaching agent d. heat from an electric spatula

Occlusion is     a. the condition in which object properties don’t change when viewed from different angles.     b. the idea that numerous physical stimuli can create the same image on the retina.     c. when one object partially covers another.     d. when the stimulus on the receptors is ambiguous.