What's the difference between conjunctiva and cornea?

Conjunctiva


Definition:

  • (n.) The mucous membrane which covers the external surface of the ball of the eye and the inner surface of the lids; the conjunctival membrane.

Example Sentences:

  • (1) A diagnosis of unilateral tuberculosis of the conjunctiva was established in a 75-year-old female patient eight years after the first manifestations of disease.
  • (2) The difference from the Hughes flap is that the blood supply is maintained through two tubed pedicles of conjunctiva and Muller's muscle, rather than an apron of conjunctiva.
  • (3) In neurological diseases the hyposensitivity could include the cornea, conjunctiva and lid margin.
  • (4) We describe two patients with different adnexal locations of localized extramedullary plasmacytomas, one under the conjunctiva of the caruncle and the other under the tarsal conjunctiva.
  • (5) This is the first reported case of malakoplakia arising from conjunctiva, although three others have involved the ocular adnexa.
  • (6) The conjunctival surfaces of ten patients with active, ocular cicatricial pemphigoid, three patients with drug-controlled ocular cicatricial pemphigoid, and six patients with normal conjunctivas were studied using scanning electron microscopy.
  • (7) Noncontact biomicroscopy of the vessels of the bulbar conjunctiva was employed to examine the microcirculatory bed in 91 normal full-term infants, who received 8-9 points according to Apgar's scale, in the course of the postnatal period.
  • (8) A chronic, progressive disease, CP is characterized by shrinkage of the conjunctiva, symblepharon, entropion, trichiasis, dry eye, and finally reduced vision from corneal opacification.
  • (9) The adjacent conjunctiva appeared normal except for a possible slight decrease in goblet cells.
  • (10) Tarsal conjunctivas of 14 normal guinea pigs, 34 infected ones, and 7 control guinea pigs (inoculated with yolk sac only) were excised and tested for peroxidase by the Graham and Karnovsky method (J. Histochem.
  • (11) Patients with fever, polymorphous skin eruption, congested conjunctiva, reddened palms and soles, red lips and oral mucous membrane, and soft-tissue swelling of the peripheral extremities and who experience membranous desquamation of fingers and toes should be suspected of having mucocutaneous lymph node syndrome.
  • (12) A four and a half-year old Nigerian girl, living at home, who presented with protracted fever, multifocal lymph node enlargement, extensive scaly rash, injected conjunctivae, fissuring of the lip and other features consistent with a diagnosis of Kawasaki disease is reported.
  • (13) The guinea pig conjunctiva is a suitable tissue for studying the pathogenesis of toxoplasmosis.
  • (14) The opthalmologist had performed the opthalmoscopic examination, biomicroscopy of the vessels of conjunctiva and episclera the opthalmocalibrometry and angiophotometry as well as opthalmodynamometry.
  • (15) Five masses involved the bulbar conjunctiva, and 2 masses involved the eyelids.
  • (16) The concentration of sodium cromoglycate in the tears, conjunctiva and cornea 6 h after administration of the acetylated lanolin base equalled or exceeded the concentrations obtained with the aqueous solution 1 h post-instillation.
  • (17) Bacterial growth was found in 8 (20.5%) of 39 patients with clinically normal conjunctiva and no polymorphonuclear leukocytes (PMNs), and in 8 (61.5%) of 13 subjects with clinically normal conjunctiva and evidence of PMNs.
  • (18) We concluded that CT will cause AOM in the chinchilla by direct inoculation into the middle ear as well as indirectly by infection of the nasopharynx and conjunctiva.
  • (19) The most common eye disease are cataract, refractive error and presbyopia, and diseases of the conjunctiva and sclera.
  • (20) The amino acid composition showed some differences between pterygium and normal conjunctiva.

Cornea


Definition:

  • (n.) The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See Eye.

Example Sentences:

  • (1) Displacement of the surface of the cornea of bovine eyes after disruption of intact structures was investigated by means of holographic interferometry.
  • (2) The patient, a 12 year-old boy, showed a soft white yellowish mycotic excrescence with clear borders which had followed the introduction of a small piece of straw into the cornea.
  • (3) Increased amounts of laminin in the basal epithelium of the cornea and of collagen type III in the stroma and subepithelial components of the stroma were observed.
  • (4) We report on a membrane inflation method of wound spreading in intact human corneas using the Baribeau Micronscope.
  • (5) When 5 corneas with quiescent HSK were cultured in vitro, 3 again became HSV antigen positive.
  • (6) Corneas of bullfrog (Rana catesbeiana) were mounted between lucite chambers.
  • (7) The eye is of the closed vesicle type and is composed of retina, cornea, vitreous body, lens and optic nerve.
  • (8) The steps in the model are the drug elimination rate in the precornea and anterior chamber, the rate of drug dissolution, the rate of drug penetration into the cornea, and the rate of drug transport into the aqueous humor.
  • (9) Gas trapping and corneal edema were not observed in uncovered corneas or corneas covered with membrane lenses.
  • (10) Since lymphocytic cells in intimate contact with degenerating keratocytes have previously been identified in the cornea, these observations provide a basis for the view that cell-mediated immunopathogenesis is involved in the etiology of herpetic stromal keratitis.
  • (11) Lactate dehydrogenase (LDH) levels and subunit isozyme patterns in cornea were monitored in 36 albino rabbits wearing thick, rigid, gas-permeable contact lenses for periods of 24 h, 2 and 7 days, and 1 and 3 months.
  • (12) Calculations of energies of activation, taken from Arrhenius plots, indicate that the diffusion of drug across the cornea may be by two different mechanisms that depend on the physical-chemical characteristics of the perfusant.
  • (13) The mean in the newborn-to-6-month-old group was 47.59 D; in the 12-18-month-old group it had decreased to 45.56 D. The cornea appears to stabilize at about 54 months, with an average reading of 42.69 D. Evaluation of 11 eyes diagnosed as having persistent hyperplastic primary vitreous revealed that eyes with this diagnosis generally have steeper corneas than normal eyes at any given age.
  • (14) There was no significant difference in the wound-healing rate, but at 36 hours there was a reduction in wound-healing rate of the excimer ablated corneas.
  • (15) More importantly, this study reports the first detection of LAT in RNA extracted from 9% of corneas from latently infected rabbits (n = 22) by the polymerase chain reaction.
  • (16) Cat corneas were stored at refrigerator temperatures in M-K medium (TC-199, 5% dextran), modified M-K medium (TC-199, 1% chondroitin sulfate), or on the intact globe in moist chambers for intervals of one to nine days.
  • (17) Pterygia, triangular sheets of fibrovascular tissue that invade the cornea, have recurrence rates of 30% to 50% with currently available surgical procedures.
  • (18) Rabbit corneas grown in organ culture (24 well plate) were inoculated topically with 50 microliters (5 x 10(5) pfu) of different ocular adenoviral serotypes (ATCC and clinical isolates).
  • (19) A recipient cornea gradually developed wrinkling and opacification in Bowman's layer following an uneventful myopic epikeratoplasty.
  • (20) In neurological diseases the hyposensitivity could include the cornea, conjunctiva and lid margin.