Abrasion
![card image](../uploads/1008/18/_12123679_17f652bad59__8000_00012350.jpg)
Rubbing off of the superficial layer.
Albinism
![card image](../uploads/1009/19/_12123679_17f652bad59__8000_00012352.jpg)
Hereditary loss of pigment in the eye, skin and hair; usually associated with lowered visual acuity, nystagmus and light sensitivity.
Amblyopia
![card image](../uploads/1010/20/_12123679_17f652bad59__8000_00012354.jpg)
Amblyopia or “lazy eye” is a dimness of vision that can not be corrected to 20/20 by a prescriptive lens. Some therapy can be used, such as patches, to strengthen the weak eye.
Aniridia
![card image](../uploads/1011/21/_12123679_17f652bad59__8000_00012356.jpg)
Congenital absence of iris.
Aniseikonia
Aniseikonia is a condition in which there is a relative difference in size and/or shape of the ocular images. An iseikonic lens is used to correct aniseikonia. Aniseikonia often results from antimetropia or severe anisometropia.
Anisometropia
A condition in which the type of refractive error is the same for both eyes but the amount of the error is considerably unequal, usually greater than 2.00 diopters of difference. This condition may be corrected with glasses and/or contact lenses.
Antimetropia
In this condition, one eye is myopic and one eye is hyperopic. This condition may be corrected with glasses and/or contact lenses.
Aphakia
![card image](../uploads/1012/22/_12123679_17f652bad59__8000_00012358.jpg)
Aphakia is the absence of the crystalline lens of the eye, due most frequently to the removal of a cataract.
Arcus Senilus
![card image](../uploads/1013/23/_12123679_17f652bad59__8000_00012360.jpg)
Grayish white ring in the periphery of the cornea.
Blepharitis
![card image](../uploads/1014/24/_12123679_17f652bad59__8000_00012370.jpg)
Inflammation of the margins of the eyelids.
Bullous Keratopathy
![card image](../uploads/1015/25/_12123679_17f652bad59__8000_00012368.jpg)
Total swelling of the cornea with painful blister formation at the epithelial level; treated frequently with a therapeutic soft lens.
Cataracts
![card image](../uploads/1016/26/_12123679_17f652bad59__8000_00012372.jpg)
A cataract is any opacity of the crystalline lens. To be clinically significant, it must cause a significant reduction in acuity or a functional impairment. Cataracts can result from aging, an accident, hereditary factors, medications, and nutritional disorders. Treatment involves surgical removal of the lens. When patients have no crystalline lens they are referred to as aphakic.
Chalazion
![card image](../uploads/1017/27/_12123679_17f652bad59__8000_00012374.jpg)
Inflammatory enlargement of a Meibomian gland of the eyelid.
Chemosis
![card image](../uploads/1018/28/_12123679_17f652bad59__8000_00012376.jpg)
Severe edema of the conjunctiva.
Circumcorneal Injection
![card image](../uploads/1019/29/_12123679_17f652bad59__8000_00012378.jpg)
Redness around the limbus surrounding the cornea.
Tight lenses, sensitivities to solutions and keratitis may all
result in circumcorneal injection in soft lens
wearers.
Conjunctivitis
![card image](../uploads/1020/30/_12123679_17f652bad59__8000_00012380.jpg)
Conjunctivitis is a nonspecific term used to describe an inflammation of the conjunctiva caused by a wide range of conditions. It is commonly referred to as “pink eye”. It is classified clinically according to the underlying cause. The most common causes are bacterial, viral, allergic, and contact lens related. It is possibly contagious and rooms should be disinfected after anyone with a red eye uses any equipment.
Corneal Edema
![card image](../uploads/1021/31/_12123679_17f652bad59__8000_00012382.jpg)
Swelling of the cornea caused by hypoxia or insufficient oxygen.
Dellen
![card image](../uploads/1022/32/_12123679_17f652bad59__8000_00012384.png)
A depressed area on the cornea which shows stain due to lack of wetting from the pre-corneal tear film. It is generally found adjacent to an elevated area.
Diplopia
Diplopia occurs when a single object is perceived as two objects instead of one (Double Vision). This condition may be aided with the use of prism. A sudden onset of diplopia in adults is unusual and requires in-depth examination by the doctor.
Dry Spots
![card image](../uploads/1023/33/_12123679_17f652bad59__8000_00012386.jpg)
Areas of drying as noted by absent areas of fluorescein-stained tear film on the cornea when the patient stares.
Ectropion
![card image](../uploads/1024/34/_12123679_17f652bad59__8000_00012388.jpg)
An eversion or turning outward of the eyelid.
Endophthalmitis
![card image](../uploads/1025/35/_12123679_17f652bad59__8000_00012390.jpg)
An inflammation of the entire eye including the outer coats.
Entropion
![card image](../uploads/1026/36/_12123679_17f652bad59__8000_00012392.jpg)
Turning inward of the eyelid.
Epithelial Edema
Edema of the superficial layer of the cornea.
Eversion of the Eyelid
![card image](../uploads/1027/37/_12123679_17f652bad59__8000_00012394.jpg)
The folding back of the eyelid on itself.
Fuch’s Dystrophy
![card image](../uploads/1028/38/_12123679_17f652bad59__8000_00012396.jpg)
Edema in the stroma associated with scarring on both the endothelium and epithelium.
Ghost Vessels
![card image](../uploads/1029/39/_12123679_17f652bad59__8000_00012398.jpg)
Empty vessels remaining after corneal invasion by blood vessels.
Giant Papillary Conjunctivitis (GPC)
![card image](../uploads/1030/40/_12123679_17f652bad59__8000_00012400.jpg)
Large elevated papules in the tarsal conjunctiva. Usually associated with soft lens wear.
Glaucoma
![card image](../uploads/1031/41/_12123679_17f652bad59__8000_00012402.jpg)
In glaucoma, the intraocular pressure becomes elevated because the eye produces too much fluid and/or the fluid cannot drain from the eye properly. Because of the high pressure, the optic nerve becomes damaged resulting in gradual vision loss. This is usually a silent disease, thus necessitating routine screenings. There is no cure, but treatment involves medications and/or surgery.
Hypoxia
![card image](../uploads/1032/42/_12123679_17f652bad59__8000_00012404.png)
Low in oxygen.
Keratitis Sicca
![card image](../uploads/1033/43/_12123679_17f652bad59__8000_00012406.jpg)
Dryness of the cornea.
Keratitis
![card image](../uploads/1034/44/_12123679_17f652bad59__8000_00012408.jpg)
Inflammation of the cornea.
Keratoconjunctivitis Sicca
![card image](../uploads/1035/45/_12123679_17f652bad59__8000_00012410.jpg)
Drying of the cornea and conjunctiva.
Keratoconus
![card image](../uploads/1036/46/_12123679_17f652bad59__8000_00012412.jpg)
A degeneration of the cornea causing irregular and severe astigmatism in which the cornea becomes curved or conical in shape.. Patients require specialty contact lens fitting, usually with rigid gas permeable lenses.
Nebula
![card image](../uploads/1037/47/_12123679_17f652bad59__8000_00012414.jpg)
A faint or slightly misty corneal opacity.
Neovascularization
![card image](../uploads/1038/48/_12123679_17f652bad59__8000_00012416.jpg)
Abnormal growth of new blood vessels in the cornea.
Nystagmus
Nystagmus is an involuntary, rapid movement or rotation of the eye. Nystagmus is often associated with photophobia. Patients with a significant refractive error may profit from contact lenses because the lenses move with the eye.
Overwearing Syndrome
![card image](../uploads/1039/49/_12123679_17f652bad59__8000_00012418.jpg)
A misnomer for acute corneal hypoxia characterized by a latent interval after removal of the lens; extreme pain and congestion of lids, cornea, and conjunctiva are experienced. It is more common with rigid lenses.
Pannus
![card image](../uploads/1040/50/_12123679_17f652bad59__8000_00012422.jpg)
Invasion of the peripheral cornea by infiltration and formation of the new blood vessels.
Phoria
Phoria is a condition in which an ocular muscle is out of balance. This muscle imbalance creates a tendency in which the eye turns away from its normal position when fusion is broken. The brain has a natural tendency to create fusion. However, when fusion is broken by something obstructing a person’s line of sight, the eye will have a tendency to turn away from its normal position. Once the line of sight is clear, fusion will generally occur.
Photophobia
Photophobia is an abnormal sensitivity or intolerance of light.
Pinguecula
![card image](../uploads/1041/51/_12123679_17f652bad59__8000_00012424.jpg)
Yellowish, triangular thickening of bulbar conjunctiva, nasal or temporal to the cornea.
Pterygium
![card image](../uploads/1042/52/_12123679_17f652bad59__8000_00012426.jpg)
A triangle fold of growing membrane that may extend over the cornea from the white of the eye. It occurs most frequently in persons exposed to dust, sun, or wind.
Ptosis
![card image](../uploads/1043/53/_12123679_17f652bad59__8000_00012428.jpg)
Ptosis is a drooping of the upper eyelid. A ptosis crutch may be used to elevate the drooping upper eyelid. Surgery is also available to help correct this condition.
Spectacle Blur
Blurred vision that lasts for 30 minutes or longer after a rigid lens is removed and spectacles are employed.
Strabismus
![card image](../uploads/1044/54/_12123679_17f652bad59__8000_00012430.jpg)
Strabismus, know as “crossed eyes”, is a muscle or refractive imbalance that prevents normal binocular vision. This condition may be aided with the use of prism, vision therapy, or surgery to help with either visual acuity or the cosmetic appearance of the eye.
Strippling
Dotlike staining of the cornea.
Superficial Punctate Keratitis (PSK)
![card image](../uploads/1045/55/_12123679_17f652bad59__8000_00012432.jpg)
Diffuse stippling of the cornea.
Three and Nine O’Clock Staining
![card image](../uploads/1046/56/_12123679_17f652bad59__8000_00012434.png)
Erosion of the cornea at the 3 and 9 o’clock position; seen usually in patients wearing rigid lenses.
Tropia
![card image](../uploads/1047/57/_12123679_17f652bad59__8000_00012436.jpg)
Tropia is a definite turning of an eye away from its normal position. Both eyes are not focusing on the object viewed. The brain cannot overcome the turning of the eye to create fusion. Tropia may result from a weak or damaged ocular muscle or from the brain’s inability to create fusion.
Ulceration of the Cornea
![card image](../uploads/1049/59/_12123679_17f652bad59__8000_00012444.jpg)
A large defect in the cornea which may be caused by hypoxia, trauma, or infection.
Vascularization
![card image](../uploads/1048/58/_12123679_17f652bad59__8000_00012440.jpg)
Increased blood vessels occurring in a cornea.