| PD | Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreatic duct; p... |
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| PICA | percutaneous transluminal coronary angioplasty; Porch Index of Communicative Abilities; posterior in... |
| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
| PPA | palpation, percussion, auscultation; pepsin A; phenylpropanolamine; phenylpyruvic acid; Pittsburgh p... |
| Sp | the most posterior point on the posterior contour of the sella turcica; species; specific; specimen;... |
| meridian of cornea | Any line bisecting the cornea through its apex. (05 Mar 2000) |
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| ring ulcer of cornea | Inflammation of the greater part or the whole of the corneal periphery. (05 Mar 2000) |
| gutter dystrophy of cornea | A marginal furrow usually inferiorly about 1 mm from the limbus; and sometimes bilateral. Synonym: keratoleptynsis. (05 Mar 2000) |
| conical cornea | Cone-shaped cornea with the apex of the cone being forward. Also called conical cornea. (12 Dec 1998) |
| cornea | <anatomy, ophthalmology> The transparent structure forming the anterior part of the fibrous tunic of the eye. It consists of five layers: 1. The anterior corneal epithelium, continuous with that of the conjunctiva. 2. The anterior limiting layer (Bowman's membrane). 3. The substantia propria or stroma. 4. The posterior limiting layer (Descemet's membrane). 5. The endothelium of the anterior chamber. Synonym: keratoderma. Origin: L. Corneus = horny (18 Nov 1997) |
| cornea farinata | Bilateral speckling of the posterior part of the corneal stroma. Synonym: floury cornea. (05 Mar 2000) |
| cornea urica | Bilateral deposition of crystalline deposits of urea and sodium urate within corneal stroma. (05 Mar 2000) |
| cornea verticillata | Congenital whorl-like opacities in the cornea. Synonym: Fleischer's vortex. (05 Mar 2000) |
| serpent ulcer of cornea | A severe, creeping, central, suppurative ulcer often due to pneumococci. Synonym: pneumococcal/suppurative keratitis, serpent ulcer of cornea. (05 Mar 2000) |
| substantia propria of cornea | Proper substance of cornea, modified transparent connective tissue, between the layers of which are open spaces or lacunae nearly filled with the corneal cells or corpuscles. Synonym: substantia propria corneae. (05 Mar 2000) |
| ichthyosis sebacea cornea | A type of ichthyosis with vernix caseosa as seen in the newborn. (05 Mar 2000) |
| ectatic marginal degeneration of cornea | Bilateral opacification and vascularization of the periphery of the cornea, progressing to formation of a gutter and ectasia. Synonym: ectatic marginal degeneration of cornea. (05 Mar 2000) |
| elastic layers of cornea | See: anterior limiting layer of cornea, posterior limiting layer of cornea. (05 Mar 2000) |
| endothelial dystrophy of cornea | Spontaneous loss of corneal endothelium leading to oedema of the corneal stroma and epithelium. (05 Mar 2000) |
| transparent ulcer of the cornea | An obsolete term for an ulcer of the cornea, occurring usually in children, that heals without opacity. (05 Mar 2000) |