If a patient suffers visual impairment only in one eye, why must the damage be located in the visual pathway prior to the optic chiasma?

Q: Describe the lens of the dissected eye.

A: The lens is a transparent biconvex structure in the eye, which along with the cornea helps to…

Q: Label the parts of the visual pathway. Projection fibers Nasal parts of visual elds Nasal bers…

A: Answer: Introduction: The visual pathway starts with the retina photoreceptors and ends in the…

Q: What is the visual outcome if the specific extrinsic eye muscle involved in convergence reflex did…

A: The extrinsic eye muscles control the movement of the eye. There are 6 types of extrinsic muscles…

Q: Fill in the blank:  Olfactory sensations usually fade rapidly as a result of…

A: Special senses include specific sensitive receptors that are involved in providing detailed…

Q: Using a line diagram, show how parallel rays of light are brought to a focus on the retina. Explain…

A: Sense organs are specialized organs that allow the human body to perceive sight, smell, sound,…

Q: Which is the part of thehuman visual system wherethe receptors that sense light,i.e., the…

A: Eye is the chief organ of the visual system. In most mammals they are paired structures and are oval…

Q: A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the corrective…

A: Myopia is a defect in vision in which objects are seen only when present very close to the eyes. it…

Q: Night vision begins with the stimulation of

A: Night vision is the ability to see in low-light conditions. Whether by biological or technological…

Q: Describe the effect on vision of a tumor in the hypothalamus or pituitary gland that compresses the…

A: Visual information is passed from the axons of the ganglion cells to the brain through the optic…

Q: Explain why the retina can detach from the eyeball with just a blow to the back of the head.

A: The retina is the outgrowth of the forebrain. It is a membrane that covers the inner surface of the…

Q: Which defect of vision can be rectified using a concave lens?

A: The eye is the organ of visual system that consists of rod and cone cells. These cells are present…

Q: Describe the structure of the retina.

A: The visual system is comprised of the eyes which help in perceiving and processing visual detail.…

Q: Compare the architecture of the fovea centralis with more peripheral regions of the retina. How does…

A: That eye is also focused when reading and looking at images in daylight so that the image falls…

Q: Under normal visual circumstances, explain why small objects are not lost from our vision.

A: The eye is a three-layered, fluid filled ball divided into two chambers. The human eye is designed…

Q: What would cause the greatest loss of visual function—trauma to cranial nerve III, IV, or VI? Why?

A: Cranial nerves are the set of nerves that arise out directly from the brain or brainstem. Cranial…

Q: Why do we detect faint light more effectively in the periphery of the retina than in the fovea?

A: Faint light or dim light is detected by rods in retina

Q: Trace an impulse from the retina to the visual cortex

A: The eye is the sensory organ that helps in vision. It helps in visualizing objects, color, light…

Q: Because fibers of the optic nerve that originate in the nasal halves of each retina cross over at…

A: Into the nasal (medial) half and the temporal (lateral) half, the visual field of each eye is…

Q: Explain how the eye focuses on near and far objects.

A: The human eye is a sensory organ that is responsible for controlling vision. It contains a…

Q: When the muscles connected to the crystalline lens contract fully, its focal length is 16.5000 cm.…

A: INTRODUCTION The human eye forms a sharp image on the retina very much like the simple camera we…

Q: As a person ages, their ability to focus on near objects(accommodation) changes. If a person is…

A: Myopia Myopia is also known as nearsightedness. This is an eye condition where a person has a poor…

Q: At each level of the retina-geniculate-striate system, receptive fields in the foveal area are ___…

A: Answer-  The receptive fields in the fovea region is larger.

Q: Give exact location and function of optic nerve

A: The location of the c nerve is in the back eye. It is also known as cranial nerve or cranial nerve…

Q: which cannot be corrected by any type of spectacle lenses?

A: The eye is a complicated organ that works in conjunction with other organs to provide vision…

Q: Name the internal layer of the eye which prevents reflection of light.

A: An eyeball is a spherical structure that helps in vision which fits in an eye skeleton known as bony…

Q: Name the condition in which light rays are formed behind the retina.

A: Eye is a specialized sensory unit that is responsible for clear vision that helps in the perception…

Q: Explain why an eye has a blind spot.

A: Retina is a part of our eye on which image is formed. Rod and cone cells help in this image…

Q: State the function and location of Frontal eye fields.

A: Eyes are the organs of the “visual system.” The eye has different components that include the…

Q: Name the part of eye which refract eye rays to focus on retina.

A: Eye is an organ responsible for sight/ vision. There are many structures which works together to…

Q: What is the trade-off between acuity and sensitivity and how does the visual system deal with this?

A: Acuity is the ability to see, hear, or understand something easily. Visual acuity especially relates…

Q: The arrangement of tunics in the eye, from the innermost to outermost aspect of the eye, is a.…

A: The eye is the sensory organ for vision and lies in the cavity of the orbit. The retina is regarded…

Q: Differentiate between choroid and sclerotic layers of the eye on the basis of the function.

A: The eye can be defined as a structural organ that is located in the orbit of the skull. The eye…

Q: Give a brief account of Mechanism of vision.

A: Light rays enter the eye through the cornea which is considered as the clear front “window” of the…

Q: When you change your focus from near to a far object, describe the three main mechanisms occur in…

A: Introduction :- The human eye is a sense organ that responds to light to allow vision. Both the…

Q: Discuss the absorption of light by the retinal cells.

A: The retina is the part of the eye that serves as a screen for image formation. It is composed of a…

Q: Differentiate between near vision and distinct vision on the basis of shape of the eye lens.

A: Eye is the chief organ of the visual system. In most mammals they are paired structures and are oval…