Abstract：
PURPOSE:To estimate objective visual acuity in subjects suffering from cataract and age-related macular degeneration via the optokinetic response evoked by a non-conventional induction method (oktotype); in addition, to compare such objective outcome with the subjective acuity based on the ETDRS charts. METHODS:Patients were presented with 13 sequences of symbols arranged horizontally to form a serial pattern, moving from left to right at a constant rate. In each sequence, the size of the stimuli was reduced progressively, while the operator checked for the disappearance of the optokinetic response via a small video camera mounted on the test lens frame. The minimum angular size of the serial pattern able to evoke the optokinetic response (MAER) was referred to as the objective visual acuity of the subject. RESULTS:Correlation between logMAER and logMAR was significant in the cataract and macular degeneration group ([Formula: see text] = 0.70, p < .0001; [Formula: see text] = 0.63, p < .0007). In the two samples, the correspondence between subjective and objective visual acuity (as, respectively, decimal units and arbitrary decimal units) was satisfactory (concordance correlation coefficient: cataract group = 0.91 and AMD group = 0.93). Test-retest reliability of the oktotype was good for the cataract group and moderate for the AMD sample (Κ 0.81 and 0.59, respectively). CONCLUSION:The oktotype seems a promising tool to objectively assess visual acuity in noncooperating subjects with cataract or macular degeneration. Further research on other clinical conditions is needed to clarify the suitability of the procedure in the clinical setting.
journal_name
Int Ophthalmoljournal_title
International ophthalmologyauthors
Aleci C,Cossu G,Belcastro E,Canavese Ldoi
10.1007/s10792-018-1001-4subject
Has Abstractpub_date
2019-08-01 00:00:00pages
1783-1792issue
8eissn
0165-5701issn
1573-2630pii
10.1007/s10792-018-1001-4journal_volume
39pub_type
杂志文章abstract：PURPOSE:To report the first European case of endogenous endophthalmitis secondary to a liver abscess due to Klebsiella pneumoniae expressing MagA gene. METHODS:A 33-year-old diabetic patient was admitted for fever and right upper quadrant abdominal pain. Abdominal computed tomography and laboratory studies were perfor...
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