Symptom finder - The causes of halo vision
Symptom finder - The causes of halo vision
The common causes of halo vision are cataract, glaucoma, drugs and corneal endothelial dysfunction.
Cataract is the most common causes of halo vision. Night time driving will be difficult and impossible because of the glare of the headlights. The patient may be blind by the glare of the headlights. Halo vision is also an early indication of cataract which appears painless in cases of progressive cataract. Lens opacity will later develop due to formation of cataract which later lead to blurred vision and impaired visual acuity.
Glaucoma is divided into acute angle closure glaucoma and chronic angle closure glaucoma. Both types of glaucoma are associated with halo vision. Acute angle closure glaucoma is an ophthalmology emergency. Patient complained of severe headache , loss of visual acuity, blurred vision and pain excruciating in nature around the affected eyes. Patient also complain of nausea and vomiting. Other signs of acute angle closure glaucoma are cloudy cornea, injection of the conjunctival and dilated pupil which is fixed in nature and unresponsive to light.
Another form of glaucoma is known as chronic angle closure glaucoma. Patient remain asymptomatic then, blurred vision and halo vision will develop slowly. In advance stages, patient will feel the pain and goes blind. Chronic open angle closure glaucoma is characterized by impaired visual acuity, loss of peripheral vision, mild pain around the eys and halo vision.
Toxicity from excessive digoxin intake or amiodarone may lead to diplopia, blind spots, photophobia, flashes of light, blurred vision, changes in color perception and halo vision, bright spot rings of green to yellow lights around the object.
Corneal endothelial dystrophy is a rare condition and presented with impaired visual acuity and halo vision.
What is halo vision ? Halo vision is rainbow like colored rings around bright objects or lights seen by affected person. It is based on the principle that light pass through the water/tears and later spread into spectrum of colors.
Halo vision may be associated with excessive tearing that occur due to exposure to lights which is high in intensity, emotional feelings or overwear or poorly fitted contact lens.
Halo vision may occur due to edematous corneal epithelium. Acute angle closure glaucoma may cause edema due to increase intraocular pressure that forces the fluid into corneal tissue which is anterior to Bowman’s membrane. Edematous corneal epithelium may cause blindness as well as halo vision.
Dispersion of light by opacities of the lens are the most common causes of halo vision due to cataract. Children usually suffer from halo vision as a result of glaucoma or congenital cataract . The common causes of halo vision in elderly is primary glaucoma. Patient is often reminded to report any cloudy/blurred vision, halo vision, watering eye, discharge from eye, painful eye and flashes of light. Patient is also advised not to stare directly to the sunlight.
Careful examination of the eye should be performed and observe for any evidence of conjunctival injection , changes in the lens, excessive tearing , pupils response to light , the size and shapes of the pupils and visual acuity with ophthalmoscopic examination.
References
1.Taniguchi, Fumiko, Yasuyuki Suzuki, Shiroaki Shirato, and Makoto Araie. “The Gly367Arg Mutation in the Myocilin Gene Causes Adult-Onset Primary Open-Angle Glaucoma.” Japanese Journal of Ophthalmology 44, no. 4 (July 2000): 445–448. doi:10.1016/S0021-5155(00)00201-X
2.Steinberg EP, Tielsch JM, Schein OD, and et al. “The Vf-14: An Index of Functional Impairment in Patients with Cataract.” Archives of Ophthalmology 112, no. 5 (May 1, 1994): 630–638. doi:10.1001/archopht.1994.01090170074026.
3.Naccarelli, Dr Gerald V., Robert L. Rinkenberger, Anne H. Dougherty, and David M. Fitzgerald. “Adverse Effects of Amiodarone.” Medical Toxicology and Adverse Drug Experience 4, no. 4 (August 1, 1989): 246–253. doi:10.1007/BF03259911.
The common causes of halo vision are cataract, glaucoma, drugs and corneal endothelial dysfunction.
Cataract is the most common causes of halo vision. Night time driving will be difficult and impossible because of the glare of the headlights. The patient may be blind by the glare of the headlights. Halo vision is also an early indication of cataract which appears painless in cases of progressive cataract. Lens opacity will later develop due to formation of cataract which later lead to blurred vision and impaired visual acuity.
Glaucoma is divided into acute angle closure glaucoma and chronic angle closure glaucoma. Both types of glaucoma are associated with halo vision. Acute angle closure glaucoma is an ophthalmology emergency. Patient complained of severe headache , loss of visual acuity, blurred vision and pain excruciating in nature around the affected eyes. Patient also complain of nausea and vomiting. Other signs of acute angle closure glaucoma are cloudy cornea, injection of the conjunctival and dilated pupil which is fixed in nature and unresponsive to light.
Another form of glaucoma is known as chronic angle closure glaucoma. Patient remain asymptomatic then, blurred vision and halo vision will develop slowly. In advance stages, patient will feel the pain and goes blind. Chronic open angle closure glaucoma is characterized by impaired visual acuity, loss of peripheral vision, mild pain around the eys and halo vision.
Toxicity from excessive digoxin intake or amiodarone may lead to diplopia, blind spots, photophobia, flashes of light, blurred vision, changes in color perception and halo vision, bright spot rings of green to yellow lights around the object.
Corneal endothelial dystrophy is a rare condition and presented with impaired visual acuity and halo vision.
What is halo vision ? Halo vision is rainbow like colored rings around bright objects or lights seen by affected person. It is based on the principle that light pass through the water/tears and later spread into spectrum of colors.
Halo vision may be associated with excessive tearing that occur due to exposure to lights which is high in intensity, emotional feelings or overwear or poorly fitted contact lens.
Halo vision may occur due to edematous corneal epithelium. Acute angle closure glaucoma may cause edema due to increase intraocular pressure that forces the fluid into corneal tissue which is anterior to Bowman’s membrane. Edematous corneal epithelium may cause blindness as well as halo vision.
Dispersion of light by opacities of the lens are the most common causes of halo vision due to cataract. Children usually suffer from halo vision as a result of glaucoma or congenital cataract . The common causes of halo vision in elderly is primary glaucoma. Patient is often reminded to report any cloudy/blurred vision, halo vision, watering eye, discharge from eye, painful eye and flashes of light. Patient is also advised not to stare directly to the sunlight.
Careful examination of the eye should be performed and observe for any evidence of conjunctival injection , changes in the lens, excessive tearing , pupils response to light , the size and shapes of the pupils and visual acuity with ophthalmoscopic examination.
References
1.Taniguchi, Fumiko, Yasuyuki Suzuki, Shiroaki Shirato, and Makoto Araie. “The Gly367Arg Mutation in the Myocilin Gene Causes Adult-Onset Primary Open-Angle Glaucoma.” Japanese Journal of Ophthalmology 44, no. 4 (July 2000): 445–448. doi:10.1016/S0021-5155(00)00201-X
2.Steinberg EP, Tielsch JM, Schein OD, and et al. “The Vf-14: An Index of Functional Impairment in Patients with Cataract.” Archives of Ophthalmology 112, no. 5 (May 1, 1994): 630–638. doi:10.1001/archopht.1994.01090170074026.
3.Naccarelli, Dr Gerald V., Robert L. Rinkenberger, Anne H. Dougherty, and David M. Fitzgerald. “Adverse Effects of Amiodarone.” Medical Toxicology and Adverse Drug Experience 4, no. 4 (August 1, 1989): 246–253. doi:10.1007/BF03259911.
