The Gullstrand ophthalmoscope

Gullstrand schematic eye: A representative and conceptual model of the eye using the refractive indices of the various eye components. In Gullstrand's simplified schematic eye, the cornea is depicted as having one refracting surface, while Gullstrand's non-simplified schematic eye uses two refracting surfaces.Gullstrand slit lamp: In his original version, the slit lamp consisted of a filament bulb, system of lenses, and slit opening to produce a focused beam of high intensity light. He utilized it to examine the anterior eye and vitreous.

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