ophthalmetry
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Posts by ophthalmetry
Contrast Glaretester: CSV-1000 VS. CGT-1000
Mar 25th
Contrast Glaretester: CSV-1000 VS. CGT-1000
CSV-1OOOE
The CSV-1OOOE contrast sensitivity chart test face is the most widely used contrast sensitivity test in the world. This test provides for four (4) rows of sine-wave gratings. At the recommended test distance of 8 ft (2.5 meters), these gratings test the spatial frequencies of 3, 6, 12 and 18 cycles/degree. The CSV-1OOOE provides a full contrast sensitivity curve, which is very useful for the evaluation of ocular disease (particularly cataracts, glaucoma, optic neuritis, diabetes and macular degeneration), contact lenses and refractive surgery. For cataract evaluation/documentation, a functional acuity score can be obtained directly from the More >
How to remove pterygium?
Mar 25th
How to remove pterygium? When the pterygium is enlarging and encroaches on the pupillary area, it should be rmoved surgically. The small portion of superficial clear cornea(commonly it is the epithelial layer of the cornea) beyond the area of encroachment. Then choose the conjunctival autografts in the lower quadrant of the eyeball. Why we do not choose the conjunctival autografts in the upper quadrant? Because if the patient has potential glaucoma, we could make the filtration from the upper quadrant with no conjunctival scars and get more better effects. Sometimes we could use amnion grafts to substitute the conjunctival autografts More >
The biggest Bay Bridge(Hangzhou Bay Bridge) catched fire!
Mar 24th
The biggest Bay Bridge(Hangzhou Bay Bridge) catched fire!
This morning, the biggest Bay Bridge(Hangzhou Bay Bridge) catched fire at 9:40 AM. This bridge I have ever been to. It is beautiful when sunny days. But always heavy fog and yellow sea under the bridge. You have to limit your vehicle lower than 100km/h.
What are circle lenses and are they safe?
Mar 23rd
What are circle lenses and are they safe?
Circle lens are cosmetics contact lens for beautify and could correct myopia, astigmatism and hyperopia. The diameter of the lens is on average of 14 mm(common iris diameter is 12mm) and the ratio between the optic zone and color zone is different. The color zone is always bigger than the optic zone so that your eyes appear bigger & shinier than others. And there are many color types for you to choose. Common brands are Bescon, Dueba, Geo, Neo and Jonson&Jonson.
Circle contact lenses are common seen in East Asian nations such as South More >