Refractive Error
- Astigmatism:
- Myopia (Nearsightedness):
- Hypermetropia (Farsightedness):
- Presbyopia:
Eye Diseases
Eye Structure
- Cornea
- Iris
- Pupil
- Retina
- Optic Nerve
Keratoconus is a eye disease where the cornea (front surface of the eye) thins and bulges forward into a cone shape
Dry Eye Syndrome