title: Indirect funduscopy in a gas filled eye: an observation.
abstract: It has been observed that a vitrectomised, gas filled, phakic eye can produce a real, inverted, aerial image of the fundus anterior to the cornea. The optics of this phenomenon are discussed.
mesh_terms: D001036:Aphakia, Postcataract / Q000503:physiopathology; D001082:Aqueous Humor; D003315:Cornea; D005654:Fundus Oculi / Q000502:physiology*; D005740:Gases; D006801:Humans; D055095:Optics and Photonics; D012029:Refraction, Ocular
chemical_list: D005740:Gases