Eye changes after forty.
The most common "physiologic" change that occurs in the eyes after age 40 is loss of elasticity of the lens, resulting in presbyopia. Xanthelasmas commonly occur at this age and should be removed only for cosmetic reasons. Entropion and ectropion can be quite irritating; both results from laxity of the eyelid tissues. Relaxation of eyelid tissues also contributes to blepharochalasis. Glaucoma and formation of cataracts are not normal changes but do appear with increasing frequency in persons over 40.
D000328:Adult; D000375:Aging; D002386:Cataract / Q000175:diagnosis; D002387:Cataract Extraction / Q000379:methods; D003316:Corneal Diseases / Q000175:diagnosis; D005123:Eye / Q000503:physiopathology*; D005128:Eye Diseases / Q000175:diagnosis*; D005141:Eyelid Diseases / Q000175:diagnosis; D005901:Glaucoma / Q000175:diagnosis; D006801:Humans; D008268:Macular Degeneration / Q000175:diagnosis; D008875:Middle Aged; D011305:Presbyopia / Q000175:diagnosis