Zhou HY, Wang S, Zhang H, Wang L, Zhang WS. Inhibiting the effect of (90)Sr-(90)Y ophthalmic applicators on rat corneal neovascularization induced by sutures.
Int J Ophthalmol 2016;
9:1251-4. [PMID:
27672586 DOI:
10.18240/ijo.2016.09.02]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
AIM
To investigate a practical technique used to inhibit corneal angiogenesis with a (90)Sr-(90)Y ophthalmic applicator.
METHODS
A (90)Sr-(90)Y ophthalmic applicator was detected with a radioactive nuclide application treatment healthy protection standard. The applicator used was produced through medical dosimetry research; it had a concave applicator add measured the applicator temperature, serviceable humidity range, applicator appearance status, applicator radiation homogeneity, radioautography, and radiological safety of the original applicator surface. A vessel model was established using newborn rats, with sutures around the corneal limbus. Corneal neovascularization (CNV) were observed with a slit lamp. The new vessel length and response area were measured.
RESULTS
Low-dose radiation can inhibit CNV after corneal sutures. The absorbed dose of the applicator (0.046 Gy/s) was safe for the treatment of it. The lengths of new vessels and the areas of new vessels were lower than the new born vessel rat group (P<0.01).
CONCLUSION
The optimal radiation dose emitting from the applicator can be safe and potentially used in humans.
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