This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...power, and grow weaker. As for instance, it is seen in the eye, when one eye is affected with strabismus, and is no longer used with the other or straight eye. The result is that the vision of the deviating eye is gradually lost, producing what is known as amblyopia ex anopsia, or defective vision from lack of ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...power, and grow weaker. As for instance, it is seen in the eye, when one eye is affected with strabismus, and is no longer used with the other or straight eye. The result is that the vision of the deviating eye is gradually lost, producing what is known as amblyopia ex anopsia, or defective vision from lack of use. When the eye is straightened, and once more moves in harmony Avitk its fellow eye, the lost vision will generally be gradually strengthened by this exercises and frequently a large portion ot its lost power may be eventually regained. And so it may be with deaf-mutes of the above mentioned class, where the auditory nerve still retains a certain diminished portion of its original power, weakened from lack of use. The person so afflicted does not know what sound means, but the Audiphone will open up a 6 new pathway for it, by which it may reach the nerve of hearing, which, under this stimulation, begins to gain a portion of its lost power, and to perceive and recognize the sensation we know as sound. In other words the instrument may be used as a medium for sound education. This proposition is by no means entirely theoretical, for it is fully borne out by such a case, which 1 now have under observation. The progress may be slow, but it is surely perceptible. See illustrations of teaching deaf mutes with Audiphone, figs. 32 and 33. Without going farther into historical description of the Audiphone, I will state that its value depends upon a principle long known and well understood by aurists for years gone by. And even as an instrument it is old, for as early as 1770 a translation of a book by Prof. Buchner, of Halle, appeared in London, entitled "An Easy and Very Practicable Method to Enable Deaf Persons to Hear." And one of...
Read Less
Add this copy of Helps to Hear to cart. $15.42, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Helps to Hear to cart. $25.67, new condition, Sold by Ria Christie Books rated 5.0 out of 5 stars, ships from Uxbridge, MIDDLESEX, UNITED KINGDOM, published 2022 by Legare Street Press.
Add this copy of Helps to Hear to cart. $26.58, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Helps to Hear to cart. $34.18, like new condition, Sold by GreatBookPrices rated 4.0 out of 5 stars, ships from Columbia, MD, UNITED STATES, published 2024 by Outlook Verlag.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Fine. Trade paperback (US). Glued binding. 124 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Add this copy of Helps to Hear to cart. $34.53, new condition, Sold by GreatBookPrices rated 4.0 out of 5 stars, ships from Columbia, MD, UNITED STATES, published 2024 by Outlook Verlag.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
New. Trade paperback (US). Glued binding. 124 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
