A Handbook of the diseases of the eye and their treatmentP. Blakiston, Son, 1892 - 318 pages |
From inside the book
Results 1-5 of 69
Page 6
... indicate the number of metre lenses , or diop- tries , contained in each of these lenses . 2 D is therefore twice as powerful a lens ( its focal length only half as long ) as 1 D. Convex lenses are indicated by the + sign placed before ...
... indicate the number of metre lenses , or diop- tries , contained in each of these lenses . 2 D is therefore twice as powerful a lens ( its focal length only half as long ) as 1 D. Convex lenses are indicated by the + sign placed before ...
Page 10
... indicating the latter state . The Far Point , and the Near Point . - It is possible for the eye to see objects accurately at every distance , from its Far Point , i . e . , its most distant point of distinct vision ( Punctum Remotum ...
... indicating the latter state . The Far Point , and the Near Point . - It is possible for the eye to see objects accurately at every distance , from its Far Point , i . e . , its most distant point of distinct vision ( Punctum Remotum ...
Page 15
... indicate the smallest degree of light , or L. M. ( Light Minimum ) , by which he can observe the disc issuing from the darkness . This should not be more than 1 ° or 2 ° . In practical ophthalmology the light - sense is not yet of much ...
... indicate the smallest degree of light , or L. M. ( Light Minimum ) , by which he can observe the disc issuing from the darkness . This should not be more than 1 ° or 2 ° . In practical ophthalmology the light - sense is not yet of much ...
Page 24
... indicated , they are by no means so brilliant in hue as when seen by direct vision . It has , however , been demonstrated that every color is recognizable up to the outer limit of the F.V. if sufficiently illuminated ; so that there is ...
... indicated , they are by no means so brilliant in hue as when seen by direct vision . It has , however , been demonstrated that every color is recognizable up to the outer limit of the F.V. if sufficiently illuminated ; so that there is ...
Page 28
... indicated , as has been said , by the number of the lens which corrects it . Thus , if the number of the glass , L ( Fig . 24 ) , required to correct the hyper- metropia of the eye , E , be 2.0 D , we say this eye is hyperme- tropic two ...
... indicated , as has been said , by the number of the lens which corrects it . Thus , if the number of the glass , L ( Fig . 24 ) , required to correct the hyper- metropia of the eye , E , be 2.0 D , we say this eye is hyperme- tropic two ...
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Common terms and phrases
acuteness of vision affection amblyopia ametropia amplitude of accommodation angle anterior chamber appearance aqueous humor astigmatism atrophy atropine axis bandage become blennorrhoea bulbar capsule cataract cause centre chamber choroid chronic cicatrix ciliary ciliary body color concave conjunctiva convergence convex cornea cure defect dilated diplopia disease distance emmetropic epithelium external rectus eyeball eyelids fibres flap focus forceps foreign body glass glaucoma Graefe's hemianopsia hemorrhages horizontal hypermetropia incision infiltration inflammation iridectomy iris iritis lachrymal latter layers lens lesion liable light macula lutea margin method metres mirror motion muscle myopia normal object occurs opacity operation Ophthal ophthalmia ophthalmoscope optic nerve optic papilla orbital palpebral paralysis passed patient portion posterior prolapse pupil purulent rays refraction result retina sclerotic seen skin sometimes stage strabismus surface surgeon sutures swelling symptoms tarsus tension third nerve tion tissue Treatment tumor ulcer upper lid usually vertical meridian vessels vitreous humor wound
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