Myopia and Refractive Errors
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Questions and Answers

What is the primary reason for distant objects appearing blurry in individuals with myopia?

  • The cornea is too flat
  • The retina is too sensitive
  • The eyeball is too long or the cornea is too curved (correct)
  • The eyeball is too short

    • What type of myopia is characterized by a significant degree of myopia present before the age of 6 years?

  • Pathological myopia
  • Hyperopic myopia
  • Congenital myopia (correct)
  • Simple myopia

    • What surgical treatment involves reshaping the cornea to improve vision?

  • Scan noscopy
  • Lens extraction
  • LASEK (Laser Epithelial Keratomileusis)
  • Radial keratotomy (RK) (correct)

    • What determines the focusing ability of the eye?

    <p>Axial length</p> Signup and view all the answers

    What is the term for the dimensionless number describing how fast light travels through a material?

    <p>Refractive index</p> Signup and view all the answers

    What type of myopia is characterized by degenerative changes to the back of the eye that cannot be corrected with glasses or contact lenses?

    <p>Pathological myopia</p> Signup and view all the answers

    What is the term for a surgical procedure that involves removing the natural lens of the eye to correct vision?

    <p>Lens extraction</p> Signup and view all the answers

    What is the term for the positioning of optical components that affects the quality of vision correction?

    <p>Positional placement</p> Signup and view all the answers

    What is the term for a surgical procedure that uses an excimer laser to reshape the cornea and improve vision?

    <p>LASEK (Laser Epithelial Keratomileusis)</p> Signup and view all the answers

    What is the primary function of the eyelids?

    <p>To protect the eye from dust and debris</p> Signup and view all the answers

    What is the term for the distance between the centers of the pupils?

    <p>Pupillary distance</p> Signup and view all the answers

    What is the shape of the orbit?

    <p>Pear-shaped</p> Signup and view all the answers

    What is the function of the conjunctiva?

    <p>To act as a mucosal lining of the eye and the inside of the eyelids</p> Signup and view all the answers

    What is the term for the fluid-filled sphere composed of three concentric coats or tunics?

    <p>Eyeball</p> Signup and view all the answers

    What is the function of the eyelashes?

    <p>To have a screening and sensing action</p> Signup and view all the answers

    What is the term for the mucosal lining of the eye and the inside of the eyelids?

    <p>Conjunctiva</p> Signup and view all the answers

    What is the term for the secretory system consists of basic tear secretor and accessory lacrimal secretors?

    <p>Lacrimal gland</p> Signup and view all the answers

    What is the term for the right eye?

    <p>OD</p> Signup and view all the answers

    What is the term for the vision of the eye without correction?

    <p>Vsc</p> Signup and view all the answers

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