Myopia, also known as near-sightedness and short-sightedness, is an eye disease where light focuses in front of, instead of on, the retina.As a result, distant objects appear blurry while close objects appear normal. Other symptoms may include headaches and eye strain. Severe near-sightedness is associated with an increased risk of retinal detachment, cataracts, and glaucoma.

1. Myopia
Correction with lense
Jegannath A Sanal

2. Myopia – Definition
 In nearsightedness
(myopia), the point of focus is
in front of the retina, making
distant objects appear blurry

3. (Axial myopia)
(Curvature myopia)
VeryPowerful
lens

4. Myopia Symptoms
1. Blurred distant vision

5. Myopia Symptoms
2. Squinting or partially closing the eyelids to
see clearly

6. 3. Keeping books close to face
Myopia Symptoms

7. Myopia Symptoms
4. Night blindness

8. Degrees of myopia
 I degree From 0.5 - 3.0 D
 II degree From 3.25 – 6 D
 III degree >6 D

9. Diagnosis
 1. Subjectiv methods:
Trial lenses The patient look
through a variety of lenses until an
appropriate optical correction is
determined
 2. Objectivemethods:
a) Retinoscop
b) automated refractor

10. Myopia Treatment

11. Treatment through Optical Correction
 Using Divergent or Concave lens (-D)
Wearing corrective lenses treats nearsightedness by counteracting
the increased curve of your cornea or the increased length of your
eye
Types of prescription lenses include:
1. Eyeglasses It is a simple, safe way to sharpen vision caused by
nearsightedness
2. Contact lenses
Contact lenses are small, plastic disks placed directly on the cornea