Corneal Imaging: An Introduction - University of Iowa
2016年10月19日 · Figure 14. Confocal microscopy imaging of the various corneal layers using laser-scanning in vivo confocal technology. 1-3. Superficial epithelium, epithelial wing cell layer, and basal epithelium; 4. Subbasal nerve plexus; 5. Bowman's layer; 6-8. anterior stroma with nerve (arrow), mid stroma with nerve trunk (arrow), and posterior stroma; 9.
Atlas Entry - Enlarged corneal nerves / Prominent corneal nerves
Prominent corneal nerves can be seen in many conditions including multiple endocrine neoplasia (MEN) type 2a and 2b, keratoconus, Fuch's dystrophy, leprosy, neurofibromatosis, Refsum disease, Riley-Day dysautonomia, acanthamoeba perineuritis, posterior polymorphous dystrophy, and multiple myeloma (as in this patient). They appear as fine ...
Facial Nerve Palsy: Ocular Complications and Management
2015年7月14日 · No eyelid movement. Common ocular signs of facial nerve palsy include upper eyelid retraction, lower eyelid paralytic ectropion and laxity with widening of the palpebral fissure, lagophthalmos, incomplete blink, corneal exposure keratopathy, and dry eye. Signs of chronic exposure include corneal pannus, thinning, and corneal ulceration.
Cornea: corneal abrasion with reflex spastic miosis
2008年2月8日 · This explains the basis of photophobia in an eye with a corneal abrasion even though the cornea is totally insensitive to light 1. the cornea is abraded 2. Antidromic impulses from the irritated trigeminal nerve fibers in the cornea travel to the iris 3. These impulses initiate a reaction in the iris with dilation and leakage of bloodvessels ...
Atlas Entry - Neurotrophic Ulcer Secondary to 5th and 7th Cranial …
Round or oval-shaped ulcers with grayish, elevated edges are classic for neurotrophic ulcers. In this case the patient had a 5 th cranial nerve palsy causing decreased sensation and was also predisposed to exposure given her 7 th cranial nerve palsy. The differential for etiology of neurotrophic ulcer also includes cerebrovascular accidents ...
Calcific Band Keratopathy - University of Iowa
2015年6月2日 · Calcific band keratopathy is a corneal degeneration that is characterized by subepithelial deposition of calcium, primarily in the form of hydroxyapatite, in the epithelial basement membrane, Bowman's layer, and the anterior stroma (1, 2). Initially these deposits are gray (Figure 2), but may become chalky-white as the degeneration progresses ...
Herpes Simplex Keratitis: - University of Iowa
2011年12月31日 · Although HSV epithelial keratitis is self-limited in most cases, the rationale for aggressive antiviral therapy is to prevent corneal nerve damage and potential future immunologic disease.[1] Prior to the advent of antiviral therapy, simple epithelial debridement was the treatment of choice. Later, topical antiviral therapy supplanted debridement.
Congenital Aniridia - University of Iowa
2015年3月10日 · Aniridia is a bilateral disease associated with multiple ocular abnormalities (Figure 3). Characteristics of the disease include varying degrees of iris hypoplasia, limbal stem cell deficiency and corneal opacification, cataracts, foveal hypoplasia, optic nerve hypoplasia, glaucoma, nystagmus, and decreased visual acuity [4].
Treatment of Thyroid Eye Disease, continued - University of Iowa
2016年11月18日 · Corneal Exposure. Patients at high risk for corneal exposure include those with a combination of proptosis, eyelid retraction, lagophthalmos, neurotrophic cornea, and poor Bell's reflex. Pathogenesis is centered on prolonged exposure of corneal surface, leading to corneal drying, which decreases vision and threatens barrier to infection.
EyeRounds.org: Retrobulbar Block, Peribulbar block and Common …
A peribulbar block is an alternative to the retrobulbar block and offers an effective way to provide anesthesia before ocular surgery (Br J Ophthalmol. 1997 Aug;81 (8):673-6). A small button hole is made in the conjunctivae and tenons using Westcott scissors and 0.12 forceps (Figure 4). The quadrant is freed using blunt dissection with Westcott ...