Visual acuity
Visual Acuity: Retinal fovea centralis
The fovea centralis contains only cones; more peripheral parts of the retina contain both cones and rods. Each cones in the fovea synapses with one bipolar cell , which in turn synapse with one ganglion cell l. As a result of this 1:1 ratio of cones to bipolar cells, visual acuity is high in the fovea but sensitivity to low light levels is lower than in other regions of the retina.
by the end of this lesson, students should know about
1. Normal visual acuity
2. methods to state VA
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Course Material
- Chapters 11
- Department Physiology
- Teacher
Dr. Faryal Mazhar
