corneas
Iris's clear covers
Corneas is the plural of cornea, the transparent outer layer covering the front of the eye.
The cornea focuses light onto the retina and protects the iris and pupil.
Corneal damage can blur vision: The surgeon transplanted donor corneas to restore her sight.
Eyeball's outer membrane
- irisEye's pigmented disc
- pupilLearner or eye opening
- retinaLight-sensing tissue layer
- conjunctivaMucous membrane lining eyelids
lens · uvea · vitreous · epithelium · endothelium · stroma · posterior chamber · trabecular meshwork
Irregular corneal curvature disorder
- myopiaBlurry distance vision
- hyperopiaDifficulty seeing nearby objects
- ulcerErosive tissue wound
- abrasionShallow surface wound
scarring · edema · dystrophy · keratitis · pterygium · arcus · opacity · clouding
Corneal vision correction
- keratectomyCorneal tissue excision
- transplantMove tissue between bodies
- graftIllicit political gain
- donorOne who contributes freely
recipient · rejection · sutures · refractive · PRK · crosslinking · penetrating · lamellar
State of being see-through
- clarityState of being understandable
- refractionWave bending between media
- curvatureDeviation from flatness
- asphericNot perfectly curved
focal point · diopter · crystalline · pellucid · clear · wavefront · aberration · visual acuity
Absence of moisture
- irritationMild anger or inflammation
- photophobiaAbnormal aversion to brightness
- burningCombustion in progress
- scratchinessRough, irritating texture quality
tearing · redness · discomfort · watering · stinging · grittiness · soreness · pain
sclera
Eyeball's outer membrane
conjunctiva · lens · uvea · vitreous · epithelium · endothelium · stroma · posterior chamber · trabecular meshwork · fovea
astigmatism
Irregular corneal curvature disorder
abrasion · scarring · edema · dystrophy · keratitis · pterygium · arcus · opacity · clouding · erosion
LASIK
Corneal vision correction
- keratectomyCorneal tissue excision
- transplantMove tissue between bodies
- graftIllicit political gain
donor · recipient · rejection · sutures · refractive · PRK · crosslinking · penetrating · lamellar · endothelial
transparency
State of being see-through
- clarityState of being understandable
- refractionWave bending between media
- curvatureDeviation from flatness
aspheric · focal point · diopter · crystalline · pellucid · clear · wavefront · aberration · visual acuity · light bending
dryness
Absence of moisture
- irritationMild anger or inflammation
- photophobiaAbnormal aversion to brightness
- burningCombustion in progress
scratchiness · tearing · redness · discomfort · watering · stinging · grittiness · soreness · pain · inflammation
- biological materialstissue, blood, plasma, serum, bone marrow
- donationsmoney, blood, charitable gift, clothes, gift
- opticslens, lenses, mirror, mirrors, prism
- biospecimensblood samples, tissue samples, DNA samples, saliva samples, biological samples
corneasretinas
Light-sensing eye layers
retinae · optic nerves · maculae · posterior chamber · fundus
- corneal transplantSurgical replacement of eye's clear front
- cornea transplantSurgical replacement of damaged eye covering
- scratched corneaWound on eye's surface