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(ˈrɛt n ə, ˈrɛt nə)

n., pl. ret•i•nas, ret•i•nae (ˈrɛt nˌi)
the innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light.
[1350–1400; Middle English ret(h)ina < Medieval Latin rētina, perhaps = Latin rēt-, s. of rēte net + -ina -ine3]


(ˌrɛt nˈeɪ)
a brand of tretinoin, used esp. to reduce wrinkles caused by overexposure to the sun.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


n. Retin-A, nombre comercial del ácido retinoico, medicamento usado en el tratamiento de acné.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
In a press release, the company said the costs would range from $50 to $115; the products currently include Aldara (imiquimod 5%) Cream ($85); Altreno (tretinoin) lotion 0.05% ($115), Atopiclair nonsteroidal cream ($75), Benzamycin topical gel (erythromycin-benzoyl peroxide gel) ($75), Biafine Emulsion Topical Cream ($50), Efudex (fluorouracil) Topical Cream 5% ($85), Locoid Lipocream (hydrocortisone butyrate) Cream 0.1% ($75), and Retin-A (tretinoin) Cream ($95).
Accutane (isotretinoin), Desquam-E(benzoyl peroxide), Cleocin T(clindamycin phosphate), Benzamycin, Erythromycin topical (A/T/S, erycette, t-stat), Retin-A (tretinoin) and Minocin (minocycline hydrochloride) are various anti acne drugs which are commercially available in the market.
* The flower extract that smoothes away fine lines, wrinkles, and even small scars better than Retin-A. This surgeon's secret has none of the side-effects of Retin-A.
M2 EQUITYBITES-January 27, 2016-Perrigo completes acquisition of Retin-A from Matawan Pharmaceuticals
M2 PHARMA-January 27, 2016-Perrigo completes acquisition of Retin-A from Matawan Pharmaceuticals
26 January 2016 - Irish drugmaker Perrigo Co plc (NYSE: PRGO) (TASE: PRGO) has completed the acquisition of a portfolio of generic dosage forms and strengths of Retin-A (tretinoin) from Matawan Pharmaceuticals, LLC, the company said.
Retinol became well known shortly after Retin-A made headlines as a prescription wrinkle cream back in 1987.
Products in "Smiliares" are much cheaper than the name brand drugs sold in regular drug stores, some of which are beginning to offer low cost store brands in high volume products and items like Retin-A which American tourists buy in Mexico.
The morning/morning group used a 5% benzoyl peroxide wash, then immediately applied two full pumps of the tretinoin gel microsphere (TGM) 0.04% (Retin-A Micro Pump).
Those seeking significant improvement to the appearance of wrinkled skin should consult a dermatologist about using prescription retinoids like Renova, Retin-A or the equivalent generic versions, Hirsh said, contending that nonprescription remedies offer only minor and inconsistent improvements.
"Retin-A gets broken down much more easily," he commented.