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 (B)</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 (B)</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 (C)</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 (D)</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 (B)</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) (B)</p> Signup and view all the answers

What is the primary function of the eyelids?

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

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

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

What is the shape of the orbit?

<p>Pear-shaped (B)</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 (C)</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 (B)</p> Signup and view all the answers

What is the function of the eyelashes?

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

What is the term for the right eye?

<p>OD (D)</p> Signup and view all the answers

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

<p>Vsc (D)</p> Signup and view all the answers

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