[Determination of visual function after implantation of intraocular lens].
OBJECTIVE
To understand whether the binocular visual function could be restored after posterior chamber intraocular lens (IOL) implantation.


METHODS
The visual function including corrected vision, simultaneous perception, fusion, stereoacuity, aniseikonia and retinal correspondence point were determined for 50 cases (64 eyes) after the surgery.


RESULTS
The corrected visual acuities were 0.6 or better. Visual acuities of 1.0 or better were achieved in 65% and 0.6-0.9 in 35% of the eyes. All patients obtained simultaneous perception and fusion function. The near stereoacuity of 50 cases showed foveal stereoacuity < or = 60 seconds in 23 cases (46%), macular stereoacuity 80-200 seconds 10 cases (20%) and peripheral stereoacuity 400 seconds 17 cases (34%). The far stereoacuity of 50 cases comprised 34 cases of foveal stereoacuity (68%), 9 cases of macular stereoacuity (18%) and 7 cases of peripheral stereoacuity (14%). The postoperative retinal correspondence points were normal. There was no aniseikonia in 35 cases, except 15 cases of aniseikonia which was within normal tolerable limits.


CONCLUSIONS
When binocular corrected vision is > or = 0.4 with ocular alignment, the binocular visual function could be restored for varying degrees.
Wang
K
K
Department of Ophthalmology, Beijing Tongren Hospital.
Lu
W
W
Zhang
F
F
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000839:Aniseikonia / Q000209:etiology; D003867:Depth Perception; D005123:Eye / Q000503:physiopathology*; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D015348:Vision, Binocular; D014792:Visual Acuity