Blurred Vision

Differential Diagnosis
1. Refractory Errors
2. Brain mass
3. Pituitary mass
4. Diabetes
5. HTN
6. Catarct
7. Aging
8. Medication ARDs
9. Eye infection
10. Eye allergy
Other signs & symptoms
1. Vision loss
2. Nausea & vomiting
3. Eye pain
4. Seeing hallows
Investigations
1. Ophthalmoscope
  1. Red reflex
  2. Examining the optic disc and the macula
2. Fundoscopy
3. Tonometry
4. Visual acuity
5. Colored vision test
6. Refraction assessment
Confirmed Diagnosis
1. Glaucoma
  1. Management
    1. Increase fluid drainage
      1. Parasympathomimitic
    2. Decrease fluid production
      1. B Blockers
      2. a 2 Agonists
      3. CA inhibitors
  2. Pathophysiology
    1. Due to increased production of intraocular fluid or blockage of the draining system
  3. Types
    1. Open-angle
      1. Gradual increase in ICP >21mmHg with no acute symptoms and gradual optic nerve damage
    2. Closed-angle
      1. The lens is pushing against the iris , happen suddenly with eye pain & quickly optic N. damage
Anatomy
1. Layers
  1. Fibrous
    1. Sclera & Cornea
  2. Vasculomascular
    1. Choroid
    2. Ciliary body and ciliary muscles + Iris
  3. Nervous
    1. Retina
2. Segments
  1. Anterior
    1. Anterior chamber
    2. Posterior chamber
  2. Posterior
    1. filled with aquauos viterous
Histology
1. Retinal layers
Photoreceptor transduction cascade
Basics of Vision & image formation

Resource summary

	Created by samah kannas about 4 years ago