Podcast
Questions and Answers
Which structure in the eye is responsible for the highest visual acuity?
Which structure in the eye is responsible for the highest visual acuity?
- Lens
- Retina (correct)
- Ciliary muscle
- Optic disc
What is the purpose of the optic disc in the eye?
What is the purpose of the optic disc in the eye?
- To provide entry point for retinal blood vessels (correct)
- To refract light rays
- To connect the ciliary muscle with the lens
- To fill the anterior and posterior chambers
What is the refractive index (R.I.)?
What is the refractive index (R.I.)?
- The degree of refraction
- The speed of light in air
- The ratio of speed of light in air to speed of light in a substance (correct)
- The speed of light in a transparent substance
Which of the following structures in the eye has the most refractive power?
Which of the following structures in the eye has the most refractive power?
What happens to light rays when passing through an angulated interface with a different refractive index?
What happens to light rays when passing through an angulated interface with a different refractive index?
What is the purpose of the suspensory fibers in the eye?
What is the purpose of the suspensory fibers in the eye?
Which layer of the eye contains the photosensitive cells?
Which layer of the eye contains the photosensitive cells?
What is the purpose of the vascular layer in the eye?
What is the purpose of the vascular layer in the eye?
What is the purpose of the suspensory fibers in the eye?
What is the purpose of the suspensory fibers in the eye?
What type of lens focuses light rays?
What type of lens focuses light rays?
Which is the main determinant of the level of pressure in the eye?
Which is the main determinant of the level of pressure in the eye?
What is the risk factor for glaucoma?
What is the risk factor for glaucoma?
What can increased pressure in the eye cause?
What can increased pressure in the eye cause?
Which type of glaucoma is the most common in the U.S.?
Which type of glaucoma is the most common in the U.S.?
What is the main cause of reduced flow through trabecular meshwork in glaucoma?
What is the main cause of reduced flow through trabecular meshwork in glaucoma?
Which type of glaucoma is considered a medical emergency?
Which type of glaucoma is considered a medical emergency?
What is the treatment for closed angle glaucoma?
What is the treatment for closed angle glaucoma?
Which medication decreases the production of intraocular fluid?
Which medication decreases the production of intraocular fluid?
Which medication increases the outflow of fluid from the eye?
Which medication increases the outflow of fluid from the eye?
Which medication decreases fluid production and increases drainage?
Which medication decreases fluid production and increases drainage?
Which part of the eye has the highest refractive power?
Which part of the eye has the highest refractive power?
What is the measure of the power of a lens?
What is the measure of the power of a lens?
What is the total refractive power of the eye?
What is the total refractive power of the eye?
What is the term for the ability of the lens to increase its refractive power?
What is the term for the ability of the lens to increase its refractive power?
What is the condition called when the lens gets harder and less flexible with age?
What is the condition called when the lens gets harder and less flexible with age?
What is the term for unequal focusing of light rays due to an oblong shape of the cornea?
What is the term for unequal focusing of light rays due to an oblong shape of the cornea?
What is the term for farsightedness caused by a short eyeball or sometimes a weak lens?
What is the term for farsightedness caused by a short eyeball or sometimes a weak lens?
What is the term for nearsightedness caused by a long eyeball or sometimes too much refractive power in the lens system?
What is the term for nearsightedness caused by a long eyeball or sometimes too much refractive power in the lens system?
What is the leading cause of blindness worldwide?
What is the leading cause of blindness worldwide?
What is the term for the ability to see letters of a given size at 20 feet, which is considered normal vision?
What is the term for the ability to see letters of a given size at 20 feet, which is considered normal vision?
