Indian Journal of Ophthalmology (Jan 2014)
Increased choroidal thickness in patient with high-altitude retinopathy
- Kyoko Hirukawa-Nakayama,
- Akito Hirakata,
- Kaoru Tomita,
- Tomoyuki Hiraoka,
- Makoto Inoue
Affiliations
- Kyoko Hirukawa-Nakayama
- Akito Hirakata
- Kaoru Tomita
- Tomoyuki Hiraoka
- Makoto Inoue
- DOI
- https://doi.org/10.4103/0301-4738.116483
- Journal volume & issue
-
Vol. 62,
no. 4
pp. 506 – 507
Abstract
We report a case of high-altitude retinopathy with increased choroidal thickness detected by spectral-domain optical coherence tomography (SD-OCT). A 36-year-old Japanese man developed an acute vision decrease in his left eye after he had trekked at an altitude of 4600 m in Tibet for 1 week. His visual acuity was 20/20 OD and 20/200 OS with refractive errors of − 0.25 diopters (D) OD and − 0.50 D OS 3 weeks after the onset of the visual decrease. Funduscopic examinations revealed multiple intraretinal hemorrhages bilaterally and a macular hemorrhage in the left eye. SD-OCT showed that the thickness of choroidal layer at the fovea was 530 μm OD and 490 μm OS which is thicker than that in normal subjects of approximately 300 μm. We suggest that the increase in the retinal blood flow under hypoxic conditions may be associated with an increase in the choroidal blood flow resulting in an increase in choroidal thickness.
Keywords
- Mean deviation
- non-proliferative diabetic retinopathy
- short fluctuations
- short wave automated perimetry
- standard automated perimetry
- Antimicrobial effect
- conventional silicone oil
- endophthalmitis agents
- heavy silicone oil
- Keratoconus
- modified deep anterior lamellar keratoplasty
- steep corneal curvature
- Bevacizumab
- branch retinal vein occlusion
- intravitreal
- macular edema
- triamcinolone
- Blindness
- disability evaluation
- quality of life
- visual acuity
- Mitomycin C
- pterygium recurrence
- pterygium surgery
- subconjunctival bevacizumab injection
- Imaging in glaucoma
- optical coherence tomography
- pediatric
- retinal nerve fiber layer
- Autogenous tissue grafting
- lacrimal drainage system
- lacrimal fossa
- bypass surgery
- Cornea
- excimer laser
- growth factors
- myopia
- photorefractive keratectomy
- Triamcinolone acetonide
- human trabecular meshwork cells
- in vitro
- Hyperopic implantable collamer lens
- myopic implantable collamer lens
- optical quality
- wavefront aberrations
- Dacryocystorhinostomy
- nasolacrimal duct obstruction
- silicone tube
- Age
- anterior chamber depth
- body height
- primary angle closure glaucoma
- sex
- Children
- eye injury vitrectomy study
- eye injury
- trauma
- vitrectomy
- Corneal biomechanics
- corneal hysteresis
- corneal resistance factor
- intraocular pressure
- keratoplasty
- ocular response analyser
- Aspherical intraocular lens
- quality of vision
- spherical aberrations
- Benign
- excision
- lids and caruncle
- no recurrence
- ocular FH
- Bevacizumab
- inflammation
- sterile endophthalmitis
- Carotid artery disease
- ocular ischemic syndrome
- retinal emboli
- Blindness
- cataract
- India
- low vision
- population
- Awareness
- glaucoma
- knowledge
- North India
- Aphakia
- capsular support
- inadequate
- intraocular lens implantation
- iris fixation
- Extra macular BRVO
- hyperhomocysteinemia
- multiple BRVO
- Medial canthus
- recurrent
- retiform hemangioendothelioma
- Optic atrophy
- osteopetrosis
- Lacrimal abscess
- dacryocystitis
- cardiobacterium hominis
- Ethambutol
- linezolid
- optic neuropathy
- Blunt trauma
- horseshoe-shaped macular tear
- spectral-domain optical coherence tomography
- Caesarian section
- combined occlusion
- non-ocular surgery
- perioperative visual loss
- Choroidal thickness
- enhanced depth imaging
- high-altitude retinopathy
- optical coherence tomography
