How does a lazy eye happen? By Lau’Rent Honeycutt
What is it amblyopia - brain focuses on one eye more than the other eye
Why it happens? Eye muscles become weak due to the optical nerve do not transmit to the brain Eye nerves do not transmit image to brain
Causes Genetic Diplopia Congenital cataract Congenital ptosis Anisometropic amblyopia Refractive error
Amblyopia One or both eyes do not develop normal vision during childhood Anisometropic amblyopia-a chronic blur in 1 eye Strabismus - the two eyes receive different visual images which causes confusion and diplopia Accommodative esotropia Intermittent exotropia
Diplopia muscles imbalance to track objects together Double vision Astigmatism- abnormal curvature of the frontal cornea Keratoconus – The cornea becomes thin and cone shaped
Congenital Cataracts Clouding of the lens of the eye Proteins in lens breakdown Interferes with light
Congenital ptosis the levalor muscle doesn’t lift eyelid Causes eyelid to sag
Refractive error Refractive error- Basically neurons in the eye are underdeveloped which cause the brain to focus more on the other eye
Cause Environmental factors Diabetes Hypertension
Environmental – Diabetes Cataracts Glaucoma- a groups that hurt the eye nerves retinopathy- affects blood vessel in retina Macular edema swelling in the macula( retina)
Environmental – Hypertension hypotension High blood pressure damages blood vessels to retina’s Fluid buildup under retina because of a leaky blood vessel Nerve damage – blocked blood flow to optic nerves
Life story Surgery Life in hospital Eye muscles and nerves not connected
Sources http://kellogg.umich.edu/patientcare/conditions/index.html http://www.aoa.org/?sso=y http://www.aao.org/eye-health/a-z https://nei.nih.gov/health