By Keith R. Pine, Brian H. Sloan, Robert J. Jacobs
This is the 1st textbook to provide a finished account of ocular prosthetics and the facts used to underpin and help this box of healthcare. It does so by means of bringing jointly details from ophthalmology, prosthetic eye and call lens literature, and from specialists actively engaged in those fields.
The booklet describes the mental, anatomical and physiological points of eye loss in addition to surgeries for elimination the attention, sufferer overview, developing prosthetic eyes (including prosthetic and surgical suggestions for facing socket complications), the socket’s reaction to prosthetic eyes, prosthetic eye upkeep and the background of prosthetic eyes.
Though basically meant for prosthetists, ophthalmologists, ophthalmic nurses, optometrists and scholars within the fields of ocular medication, maxillofacial medication and anaplastology, the publication additionally bargains an invaluable source for different medical examiners and kin who deal with prosthetic eye sufferers, and for these sufferers looking a deeper figuring out of the problems affecting them than they could locate elsewhere.
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Extra resources for Clinical Ocular Prosthetics
It provides a degree of protection against certain gram-positive bacteria Mandible Lower jaw bone Marx’s line The natural site of frictional contact between the eyelid margin and the surface of the eye Mast cells Cells found in connective tissue. They release substances such as heparin and histamine in response to injury or inflammation Matrix porosity A matrix is the structure or frame surrounding empty spaces. g. where conjunctival or scleral blood vessels grow into the cornea Obstructive meibomian gland dysfunction Blocked meibomian glands Occipital Of the occiput, which is the knob-like protruberance at the back of the skull Ocularist Ocular prosthetist Orbit The bony cavity that houses the eye Orbital implant An implant that is placed in the socket at the time of eye enucleation or evisceration Orbital prosthesis A facial prosthesis that restores the eye and eyelids Palatine bones The two bones forming the posterior third of the hard palate in the mouth Palpebral Relating to the eyelids Palpebral fissure The oval aperture between the open eyelids Papilla Small nipple-like protuberance Parietal bone A bone situated at the side of the skull behind the frontal bone Patency The state of being open or unblocked Periosteum The tissue lining bone pH homeostasis The body’s tendency to maintain blood pH within a narrow range Phenol red thread test A method for measuring tear production where an impregnated thread changes colour when wetted with tears Phenol red (phenolsulfonphthalein) A pH indicator used in disclosing whether a thread has been wetted by tears Photochromic lenses Lenses that darken in sunlight and lighten in shade Photophobia Intolerence of light Phthisical Of phthisis.
List of Figures Fig. 37 Fig. 38 Fig. 39 Fig. 40 Fig. 41 Fig. 42 Fig. 43 Fig. 44 Fig. 45 Fig. 46 Fig. 47 Fig. 48 Fig. 49 Fig. 50 Fig. 51 Fig. 52 Fig. 53 Fig. 54 Fig. 55 xxix A posterior platform is added to the prosthesis. The platform is designed to prevent backward rotation of the prosthesis, to allow for a narrow lower edge to engage the inferior fornix and to reduce some of the bulk (and weight) of the prosthesis The conical anterior surface supports and wedges the eyelids apart while minimising the overall bulk of the prosthesis The four rectus muscles are identified and the intra-conal space is defined The largest spherical implant that can comfortably be accommodated by the socket is chosen The implant is placed in the intra-conal space and the rectus muscles sutured to it Any available remnants of Tenon’s capsule are closed in front of the implant, and then the conjunctiva is closed without tension A temporary tarsorrhaphy is placed to control post-operative conjunctival swelling Subperiosteal implants are designed to displace the orbital tissues upwards and forwards restoring lost orbital volume and filling out a deep upper eyelid sulcus Extra bulk added anterior to the superior edge may help correct upper eyelid sulcus deformity and restore the upper eyelid crease A second ridge in front of the inferior edge, in conjunction with thinning of the lower edge from the back, sets the prosthesis upright and counters the potential backward displacement of the bulkier upper edge The prosthetic eye has improved (reduced) this patient’s right lower eyelid ectropion The inward rotation of the eyelashes that is part of upper and lower eyelid entropion has caused an accumulation of mucous on the prosthesis The convex curvature of the anterior surface is made concave behind the entropic eyelids This configuration attempts to resolve upper eyelid ptosis by filling the superior fornix and lifting the levator aponeurosis muscle This patient’s ptosis on the medial side of the eyelid causes a marked contour abnormality of the upper lid, drawing attention to the prosthetic eye A diagonal ridge is added in the location shown by the dotted line A ptosis shelf can be seen on this prosthetic eye.
An example is where finer details can be seen more clearly on close objects Tint The base colour added to white Tone The base colour added to grey Trabeculae The strands of connective tissue that support or anchor other tissues Tripoly An abrasive impregnated wax bar commonly used for polishing dentures Trochlea of the superior oblique A u-shaped pulley made of fibro-cartilage through which the tendon of the superior oblique muscle passes Value The lightness or darkness of a colour, is a measure of the amount of light reflected from its surface (reflectance).
Clinical Ocular Prosthetics by Keith R. Pine, Brian H. Sloan, Robert J. Jacobs