出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2015/12/27 12:45:37」(JST)
Conjunctivochalasis | |
---|---|
An eye with conjunctivochalasis.
|
|
Classification and external resources | |
Specialty | ophthalmology |
ICD-10 | H11.82 |
ICD-9-CM | 372.81 |
Conjunctivochalasis is a common eye surface condition characterized by the presence of excess folds of the conjunctiva located between the globe of the eye and the eyelid margin.[1]
Symptoms range from dry eye, epiphora, and irritation, to localized pain, foreign body sensation, subconjunctival hemorrhage, and ulceration. Symptoms are often made worse by vigorous blinking. Diagnosis can be made under a slit lamp upon the observation of redundant conjunctival folds. These folds can be made more apparent by staining with fluorescin dye and by applying gentle upward pressure with a finger to the eyeball through the lower lid. A tear-clearance test can also detect irregularities in the tear-film.[2]
Most conjunctivochalasis is thought to be caused by both a gradual thinning and stretching of the conjunctiva that accompanies age and a loss of adhesion between the conjunctiva and underlying sclera related from the dissolution of Tenon's capsule. The resulting loose, excess conjunctiva may mechanically irritate the eye and disrupt the tear film and its outflow, leading to dry eye and excess tearing.[3] A correlation may also exist between inflammation in the eye and conjunctivochalasis; though it is unclear if this correlation is causal.[4][5] Conjunctivochalasis may be associated with previous surgery, Blepharitis, Meibomian Gland Disorder (MGD), and Aqueous Tear Deficiency,
Because the disorder often occurs in people with typical dry eye symptoms, it can be difficult to distinguish readily the discomfort caused by the dry eye from that directly related to the redundant conjunctiva.
Mild conjunctivochalasis can be asymptomatic and in such cases does not require treatment. Lubricating eye drops can be tried but do not often work.[6]
If discomfort persists after standard dry eye treatment and anti-inflammatory therapy, surgery can be undertaken to remove the conjunctival folds and restore a smooth tear film. This conjunctivoplasty surgery to correct conjunctivochalasis typically involves resection of an ellipse-shaped segment of conjunctiva just inferior to the lower lid margin, and is usually followed either by suturing or amniotic membrane graft transplantation to close the wound.[7]
חלזיס
|
リンク元 | 「結膜炎」「結膜弛緩症」 |
see. マイナーエマージェンシー第1版 p.65 SOP.174
疾患名 | 病原体 | 潜伏期 | 病型 | 症状、経過 | |||
感染性結膜炎 | 流行性角結膜炎 | epidemic keratoconjunctivitis | はやりめ | アデノウイルス8,19,37型(ときに4型) | 7-14日 | 急性濾胞性結膜炎 | 眼脂、流涙、羞明。眼瞼腫瘤、結膜充血、浮腫、結膜の小出血斑。耳前リンパ節の腫脹と圧痛。2-4週間で消退。発症後10日後に角膜に点状上皮化混濁。 |
咽頭結膜熱 | pharyngoconjunctival fever | プール熱 | アデノウイルス3型(ときに4,7型) | 5-6日 | 急性結膜炎 | 急性結膜炎、咽頭炎、発熱。点状上皮化混濁は少ない。 | |
急性出血性結膜炎 | acute hemorrhagic conjunctivitis | エンテロウイルス70型 | 1日 | 球結膜下出血。眼球は浮腫状、結膜充血、濾胞形成は軽度。耳前リンパ節腫脹軽度。発症より3-4日にびまん性の多発性びらん。眼痛、異物感、羞明。約1週間で治癒。罹患後2,3週間後に四肢の弛緩性の運動麻痺や脳神経麻痺があり得る。 | |||
トラコーマ | trachoma | ||||||
封入体結膜炎 | inclusion conjunctivitis | ||||||
新生児封入体結膜炎 | neonatal inclusion conjunctivitis | ||||||
細菌性結膜炎 | bacterial conjunctivitis | ||||||
淋菌性結膜炎 | gonococcal conjunctivitis | ||||||
新生児膿漏眼 | blennorrhea of the newborn | ||||||
アレルギー性結膜疾患 | アレルギー性結膜炎 | allergic conjunctivitis | |||||
春季カタル | vernal conjunctivitis | ||||||
その他の結膜炎 | フリクテン性結膜炎 | phlyctenular conjunctivitis | 束状結膜炎 | ||||
慢性濾胞性結膜炎 | chronic follicular conjunctivitis | ||||||
Stevens-Johnson症候群 | Stevens-Johnson syndrome | ||||||
眼類天疱瘡 | ocular pemphigoid | ||||||
結膜弛緩症 | conjunctivochalasis |
.