Download HYPEROPIA

HYPEROPIA
Hyperopia – means a weak eye
1-c negative eye
1-c lacks plus power
TYPES OF HYPEROPIA
a- Axial Hyperopia
• The ant. Post. Diameter is short
• Glaucoma likely to develop
• Blurr disc margin
b- Curvature Hyperopia
The cornea and the lens has weaker curvature.
In retinoscope
c- Index of refraction Hyperopia
Decrease of RI all OL same part of the optical system.
d- Alteration of position of lens
Post displacement of the lens.
Clinical Classification Based On Accommodation
*the type as causes of hyperopia as important as the clinical
*Tow types :1- Latent
2- Manifestation
1- LATENT.
Completely corrected by the eyesown accommodation when no cyclo is ued.
The younger the patient the greater the latent component.
2- MANIFEST.
a)Facultative Hyperopia
May be corrected by lenses or by accommodation
Exam. In latent hy. Pt has n v.a and reject lenses bec it blurr the v.a and the
lenses as without it
b-Absolute Hyperopia
Is the part of hy. That is npt corrected by accommodation.
Exam see page 34
M V 20/40
+1.00
20/40
+1.00
+2.25 still 20/20
20/20
20/20
20/20
+3.50 cyclo refract i.e no accomadtion
No cyclo full accomadtion
+1.00
No cyclo
full accomodation with +1.00 D
No cyclo
partial accomodation with +2.25D
No cyclo
partial accomodation with +3.50
+1.00 +1.25
+3.50
SYMPTOMS OF HYPEROPIA
1- Blurred distance vision if Hyp. Is big near vision is blurred earlier.
2- H/A esp. in reading for long time.
3- Sensitivity to light.
4- Spasm of accommodation.
5- Sensation of crossing eye & no diplopia.
TREATMENT OF HYPEROPIA
a-Associated ocular muscle imbalance.
-in ET _____ give full cyclo.
-in XT______undercorrect.
-in (T) ______as much as you can to relieved symptoms.
b-Not associated with muscle imbalance.
- Give the Manifest ( Facul. + Absolute) +- slight undercorrection.
- Ask the pt. to wear the glasses as much as they can, or whenever they like esp.
for reading.
- The older the pt. the more he will need the glasses.
- It depends on the pt. symptoms. You may Rx. As less as + 1.00 D.
- Don’t give the full cyclo. Bec. You will blurr the distance V.A. even from 20/15 ___20/20